Use of redundancy in human communication

We make use of redundancy that is present in human language to correct errors. This happens in both oral and written communication. For example, if you read the sentence “There is a miscake in this sentence,” you can tell that something is wrong. So we can detect an error. Moreover, we can even correct it. We are achieving two things here: error detection and error correction. What are the principles that we are using to achieve these goals? First, because the string “miscake” is not a valid word in English, we know that there is an error. Here, the redundancy manifests itself in the form of the fact that not every possible string is a valid word in the language. In a sense, some strings are wasted: potentially they could have been used as words of a language but they are not. The benefit of this “wastefulness” is that it lets us detect or correct errors in communication. Secondly, the word “miscake” is closest to the valid word “mistake” in the language, so we conclude that it is the most likely word intended. Of course, we can also use the context and meaning to detect and correct errors but that is an additional feature, not available to computers. If you enter the string “mistaky” to Merriam-Webster online dictionary, ¹ it cannot find an entry for it; however, it comes up with a list of suggested words, first of which is “mistake.” So the computer is telling us that “mistake” is the most likely word intended because it is closest to the given string. This is called the maximum likelihood principle. As I type this article on my computer I witness many instances of this principle used by my word processor. For instance, when I mistakenly typed “fisrt” it automatically corrected it to “first.”

There are also other ways redundancy is used in natural languages. As already pointed out above, redundancy in context often enables us to detect and correct errors, vagueness and ambiguities. When humans communicate, redundancy, either explicitly introduced by the speaker or author or built into the language, comes into play to help the audience understand the message better and to overcome such obstacles as noise, accent, hearing difficulties, and so on. Shetter [4] gives a number of examples in which redundancy is manifest and useful in languages. We include a few interesting examples from his article here.

1. If we strike out all the vowels in a sentence, “xt slxws yxx dxwn bxt thx sxntxncx xs stxll lxgxblx, xsn’t xt”? (Can you read the part in quotes?) Since the consonants seem to be giving us most of the information we need, there must be a lot of redundancy here too.

2. The sentence “These three dogs are retrievers” shows grammatical redundancy in forms: plurality is expressed multiple times. Examples in other languages are just as easy to find, for instance, obligatory gender agreement in a language such as Spanish: La unica otra senora venezolana “The only other Venezuelan lady.”

3. A language’s stock of words (called the lexicon) shows a lot of redundant overlapping. To be convinced of this, all you have to do is to grab a thesaurus and look up a few words (big, little, fat, to die) that have lots of near-synonyms with only small stylistic differences.

4. Even the way languages are written is highly redundant. Try another experiment: take a piece of paper and cover up the LOWER HALF of all the letters in any sentence you have not read yet. If it is not significantly harder to read, that means that a lot in the shapes of the letters is redundant (could you still manage to read with 2/3 covered?).

Mathematical use of redundancy in digital communication

As we see, redundancy is present and useful in human languages in a number of different ways. Engineers have considered the question of whether computers can use some of the same principles to achieve error detection and correction in digital communication. Since computers have very limited capabilities compared to humans, for example they cannot make sense of words, it is the method of explicitly adding redundancy to original messages (as opposed to using the context) that can be used to achieve this goal in computers using the precise language of mathematics.

To illustrate the use of redundancy in a mathematical way in digital communication systems, consider the following example. Suppose we want to communicate with another party in a simple manner: sending messages that represent Yes or No, Let us agree that a 1 represents Yes and a 0 (zero) represents No. Unfortunately, there is often noise in the communication channel which may distort messages by flipping the binary bit (a 0, or a 1). If we just send the messages as they are, do we have any way of knowing if an error occurred during the transmission? Note that the reason we can do nothing against errors is that all possible strings (that all have length 1 in this simple example) are valid codewords. Codewords in digital communication correspond to valid words in a language. Compare this to the earlier example about correcting the typo in the word “miscake.”

Data of any kind is stored and processed as binary strings, that is strings of 0s and 1s, in computers. Every letter has an ASCII code. For example, the ASCII code of the letter “A” is 01000001. Typically, data consists of billions of bits. A bit is a 0 or a 1. To employ redundancy, data is broken into blocks of a fixed length. We now consider and compare several encoding schemes where the block size is 4.

Scheme 1: Perhaps most intuitive way of adding redundancy is simply to repeat the original message. Instead of sending 1011, we send 10111011. Here 1011 is the original message and 10111011 is the codeword. The string obtained after adding redundancy is called a codeword. What does this scheme buy us? Do we get any error detection or correction capability? If you think about this for a moment, you can see that if there is a single error, then it can be detected. We simply break the received word in half, and compare the two halves. If there is exactly one error, the two halves will not be the same. We also note, however, that we cannot correct any errors. Also, if the number of errors is 2 (or even) we may not be able to detect that, depending on the location of the error.

To quantify what we gain by employing an encoding scheme, let us assume that the probability of a bit error for a channel is 0.001, and there are about 3000 bits on a page. If we do not employ any encoding scheme, we expect to have an average of 3 words in error per page. If we employ this scheme though, there must be at least 2 errors per word in order for an error to go unnoticed. This improves the expected number of incorrect words to 1 in about 50 pages. Can we do better?

Scheme 2: This scheme repeats everything 3 times. So the original message 1011 is encoded as 101110111011. What are the pros and cons of this scheme? It is not hard to see that not only can we detect single or double errors; we can also correct single errors by using the “majority opinion.” This improvement comes with a cost though: only 1 out of 3 bits sent are information bits (so 2 out of 3 are redundancy bits). We say that the rate of this code is 1/3. The rate of the previous code was 1/2. With this improved error correction capacity, the expected number of incorrect words is 1 in about 6250 pages.

Scheme 3: This is a well-known and commonly used encoding scheme that adds a single parity check bit at the end so that the number of 1’s in the resulting codeword is even. Therefore, the original information 1011 is encoded as the codeword 10111. Another way of describing this method is that the modulo 2 sum of all bits (including the redundancy bit) is 0. In modulo 2 arithmetic 1+1=0. It is easy to see that this scheme detects any single errors, but cannot correct any.

Scheme 4: This is also a well-known example of an error correcting code that was one of the earliest codes designed. It was discovered by R. Hamming [1]. In this scheme 3 bits of redundancy are added to the information bits. The first redundancy bit, or the fifth bit of the codeword, is the sum of the first, second, and fourth bits. The next redundancy bits are the sum of the first, third, and fourth bits. The last bit is the sum of the second, third and fourth bits. All sums are modulo 2. According to this scheme, the information bit 1011 is encoded as 1011010. Although it is not obvious, this code can correct any single error. Therefore, compared to the second scheme above, the Hamming code achieves the same error correction ability in a more efficient way: The information rates are 1/3 vs. 4/7.

Although codes used in practice are longer and more sophisticated, the basic principles are the same. These examples show that there are different ways of employing redundancy, some more efficient than others. The question is, therefore, not whether or not redundancy can be useful but how best to use it. Error correcting codes are used in a wide range of communication systems from deep space communication, to quality of sound in compact disks and wireless phones. Researchers are still looking for more efficient codes to make use of redundancy in more clever and useful ways. It is remarkable and surprising that a lot of theoretical mathematics can be used in the design of good codes. Some seemingly useless and abstract parts of mathematics are being used in very practical applications.

Other examples of “redundancy”

We have looked at the use of redundancy mainly in communication systems. But there are apparent redundancies in other places as well. For instance, the so called “vestigial organs” in humans and other living beings are an interesting topic of controversy. Initially, these organs were thought to be useless and non-functional. However, some functions of these organs have since been discovered. The German Anatomist R. Wiedersheim made a list of vestigial organs in 1895 which included approximately 100 organs, including the appendix and coccyx. As science progressed, it was discovered that all of the organs in Wiedersheim’s list in fact had very important functions. For instance, it was discovered that the appendix, which was supposed to be a “vestigial organ,” was in fact a lymphoid organ that fought infections in the body. This fact was made clear in 1997: ²

Other bodily organs and tissues-the thymus, liver, spleen, appendix, bone marrow, and small collections of lymphatic tissue such as the tonsils in the throat and Peyer’s patch in the small intestine-are also part of the lymphatic system. They too help the body fight infection. ³

It was also discovered that the tonsils, which were included in the same list of vestigial organs, had a significant role in protecting the throat against infections, particularly until adolescence. It was found that the coccyx at the lower end of the vertebral column supports the bones around the pelvis and is the convergence point of some small muscles and for this reason, it would not be possible to sit comfortably without a coccyx. ⁴

Another important example we would like to consider is repetitions in the Qur’an, the Muslim holy book. There are several historical events or divine decrees and commands that are repeated in many places in the Qur’an. Some have criticized this as redundant. However, this is a superficial view. The Qur’an is the word of the All-Wise Creator, who has wisdom in everything He does. So, there must be some wisdom behind these repetitions. Seventh-century Arabs were very skilled in literature and poetry. The literary masters of Arabic admitted and appreciated the miraculous eloquence and literary power of the Qur’an. The Qur’an challenged them to make something similar to it:

And if you are in doubt about what We have revealed to our servant, then produce a sura (chapter) like it. (Baqara 2:23)

They have since been unable to meet the challenge. They used to hold literary competitions where the best poems were chosen and exhibited on the walls of the Ka‘ba, and called the Seven Hanging Poems. The Qur’an demonstrated such eloquence that it caused Labid’s daughter to remove the poems from the walls of the Ka‘ba. She declared while doing so, “Besides the verses of the Qur’an these no longer have any value” [3]. When a Beduoin poet heard verses from the Qur’an, he bowed down in prostration before its eloquence despite the fact that he did not convert to Islam. All of this should make us search for the reasons and wisdom behind the repetitions in the miraculous divine book. Nursi gives a number of such reasons in The Words [3]. He says that since the Qur’an is a book of invocation, prayer and summons, the repetition is desirable, even necessary. Also, it speaks of such mighty matters of extraordinary importance that their repetitions are most appropriate. Two examples of verses that are repeated many times in the Qur’an are Which of the favors of your Lord will you deny? (55:13, repeated thirty times in Sura al-Rahman) and Woe on that day to the deniers (77:15, repeated ten times in Sura al-Mursalat). These verses proclaim before Earth, the heavens, the ages, and in the face of humanity and jinn, their ingratitude, unbelief, and wrongdoing. They also proclaim their violation of the rights of all creatures, which brings the heavens and Earth to rage, spoil the results of the universe’s creation, and indicate contempt and denial of Divine Sovereignty’s majesty. If these two verses were repeated thousands of times, in a universal teaching related to thousands of issues, a need for them still would remain. It would be conciseness in majesty and miraculousness of eloquence in grace and beauty [3]. For a more detailed account of the reasons behind repetitions in the Qur’an, we refer the reader to Nursi’s The Words [3].

Conclusion

We have seen many examples where redundancy is very useful. We have seen redundancy is inherently built into the natural languages we speak, and it serves a purpose. Inspired by this fact, we introduce redundancy explicitly into digital communication systems when we want to be able to correct errors caused by noise. We have seen other examples where what appears to be redundant or unnecessary at a first glance really serves a purpose, and hence is not really redundant. We have seen that there are repetitions in the Qur’an but they too serve a purpose. The Qur’an and the universe reflect each other. We see apparent redundancies in both, but in the end we understand that there is a purpose behind everything that may initially appear to be redundant; hence, we cannot really find anything in the universe that is truly redundant. Therefore, we should keep in mind that apparently redundant or useless things in the universe may have hidden treasures behind them. Given that the creator is All-Wise and has wisdom in everything He does, it is our duty to go beyond the surface and seek that wisdom.

Nuh Aydin is an associate professor of Mathematics at Kenyon College, in Ohio, USA.

Notes

1. http://www.m-w.com
2. http://www.darwinismrefuted.com/embryology_02.html#313.
3. The Merck Manual of Medical Information, Home edition, Merck & Co., Inc. The Merck Publishing Group, Rahway, New Jersey, 1997.
4. http://www.darwinismrefuted.com/embryology_02.html#313.

References

Richard W. Hamming, 1950. “Error-detecting and error-correcting codes”. Bell System Technical Journal. 29: 147-160

R. Pinch, “Coding theory: the first 50 years” http://pass.maths.org/issue3/codes/

Bediuzzaman Said Nursi, The Words, Sozler, 1992.

William Z. Shetter, “This essay is redundant”

http://mypage.iu.edu/~shetter/miniatures/redund.htm

The complex nature of genetics and its wide implications for all living organisms from viruses to humans provide raw materials for creative imaginations. In the present scenario, many consider it vital to comprehend all the genetic information necessary to support life on this universe. One of the common constraints on the understanding of genetics is the assumption that genes are the sole causes of all activities of living organisms and can explain all aspects of biological life on earth. For example, some believe the behavior and development of an organism can be predicted, if its genetic information is known-this belief is called “genetic determinism.” However, it is true that neither all aspects of inheritance are in all cases well explained, nor that the mere effect of genes on complex traits is well interpreted. The boundaries of the effects of genes on physical existence, development, survival, and the behavior of organisms are not always simple and straightforward. The capacity of humans for genetic manipulation-at least as it is commonly assumed or claimed-is limited in several ways and some of the basic causes of such barriers have yet to be explained. The focus of this article is to point out the limitations on attempts to appoint genes as the driving force of life.

The Central Dogma

Genes are small fragments of genomic DNA, encoding mRNAs which are later translated into proteins that participate in different biological metabolisms, hence conferring different traits on an organism. The biological functions and transmission patterns of genes over generations were being investigated well before the discovery of DNA as hereditary material and date back to the recognition of Mendel’s laws in the early twentieth century. Genetic information is coded in the form of a short string of DNA called a gene, which is employed in the expression of a trait(s) or mechanism(s) through synthesizing a chain of amino acids called proteins. These proteins either can be stored in different body parts or serve as enzymes in various biochemical reactions such as fighting infections. This flow of genetic information from gene–mRNA–protein synthesis is called the “Central Dogma” in biological sciences. In this biological doctrine, a very solid and predictable mechanism is assumed. Prior to the release of the human genome sequence information, the number of genes in the human genome was estimated as ~100,000. However, this estimate was far more than the actual number of genes (~35,000), which led us to question the validity of the “Central Dogma” as an explanation of the complexity of human beings. Out of these ~35,000, only 300 genes are unique to the human species.¹ This is another blow to the authenticity of the original central dogma theory. Are those 300 genes the foundation of all humankind and do they distinguish us from the rest of the mammals? Reducing humankind to its biology and explaining it based on genes has been questioned extensively and could be the subject of another discussion. But even considering such a view valid for purely practical purposes, the big gap between humans and other mammals cannot be due to the existence of this small number of genes.

Recent scientific discoveries have revealed a key point about the structure of genes-that each gene has a set of sub-segments called exons. Each exon can make a new protein. Hence, the gene can be the template for more than one protein. In the presence of other genes and proteins, the code of a particular gene can yield different kinds of proteins under variable circumstances. The flow of information can be both ways, and hence there are no predetermined factors controlling the flow of information. That means, we might know the information on what genes are present, and we can even decode it to know what is in there, but we cannot be sure what result (proteins in this context) will come out at the end when it is in the context of real life.

From physical characteristics to their genetics

Working back from a particular trait and trying to infer the genes that are involved in expression of such trait is a different approach to reveal the role of genes but surely it is not an easy task. Traits that are expressed by a single gene or a small number of genes are known as Mendelian/qualitative traits and their pattern of inheritance is simple and detection of the gene(s) is straightforward. Some of the disease resistance in plants and blood groups in humans are classic examples of Mendelian traits. The main distinction between such traits and the quantitative ones is their discreteness. For example a human being can have only one of four blood types: A, B, AB or O, and each of these groups is solid and no other blood types exist in between. In this type of trait, the role of a particular gene(s) is usually predictable and the pattern of transmissions over generations both for the future and the past can be inferred.

However, only a small percentage of traits is qualitative and expresses Mendelian inheritance. Most traits, such as intelligence, skin color in humans, height of an organism, seed yield of a grain, and diseases that have genetic causes like cancer, are quantitative traits and complex in nature. The ultimate phenotype (what we can see or measure from a trait) emerges from the joint effect of many genes as well as interaction with the particular environment in which the individual develops. The number of genes that is involved in the expression of a particular trait can be hundreds or even more. An objective assessment of each trait and quantification (called the phenotype) is impractical in most cases and could lead to another discussion. But assuming that we can measure a trait feasibly, the inference of genetic bases could still be controversial. Considerable efforts have been devoted to unveiling the effect of genes in the expression of complex traits whose inheritance pattern deviates from Mendelian inheritance. A special genetic technique, known as genetic mapping, is used to identify multiple genes that underlie a complex trait and this has practical applications for crop improvement. In humans, efforts are directed toward the detection of genes which predispose to complex inherited diseases. In this type of situation, the effects of genes on a trait are additive and can only explain a certain amount of change in the trait that we are interested in. Detection of all genes involved in the expression of a quantitative trait is practically impossible. The environment is an important factor with a pivotal role in the expression of such traits. The term “environment” is not restricted to what is present within the cell or surrounding the cell or individual. It rather refers to larger scale effects in the process of biological life that cannot be explained by genetics and the term can be used interchangeably with non-genetic effects.

One of the most striking examples of the role of genes on the expression of the phenotype is the presence of differences between identical twins. Despite the fact that they have completely identical sets of genes, studies have shown that twins can indicate different degrees of psychiatric diseases such as bipolar disorder.² Similar phenomena may be observed in crop species. In crop breeding programs different varieties are usually tested in different environments. In most cases varieties rank differently based on their performance in different environments.³

Genetic background

Genes that do not code any information for the trait of interest can also be a part of the process of expression of the trait. In other words, certain genes can be employed to stop or alter the function of a particular gene. Modifying the utility of a gene can also be done by a series of complicated reactions within each organism through mechanisms known as epigenetics. This type of alteration in gene function is also observed empirically during the process of transferring genes between different organisms through genetic engineering.⁴ Most transferred genes are silenced (turned off) by different mechanisms in a new organism regardless of patterns of inheritance. This is particularly interesting because it clearly indicates that the existence of a particular gene in the body does not necessarily guarantee that it will be functional. Even if it is functional in one individual, it might be silent in others. Even if a gene is functioning in all the individuals carrying it, the degree of expression may be variable.

The end of genetic determinism

With the discovery of the code of genes, we now know more about the biology of living organisms than ever before, as new genetic tools have enabled us to better understand what kind of information is stored in each gene.

Most of the traits of living organisms are affected by the existence of many genes as well as non-genetic effects (denoted as environment in genetics). Although Mendelian traits can be predictable to some degree, yet we can not completely infer all the genes that are employed in the expression of a complex trait, nor the amount of contribution from each single gene and portion attributed by non-genetic factors. So we cannot determine the presence of genes by simply observing the phenotype or expression of a trait.

Considering each individual gene separately will allow us to understand its possible functions more clearly and accurately. Nevertheless, the knowledge of possible functions and structure is not enough to predetermine if the information coded in the gene will be used by the organism, and, even if it will be used, how much of that information will be processed is uncertain. Whether the information that is processed will be observed or not is another ambiguity.

Assuming that we can and will know all components of life by having the knowledge of genes is known as genetic determinism. In some cases, genes are described as independent entities that drive living organisms and manage life because of the assumption that their presence will be enough to predetermine all the biology and the behavior of an organism.

Simply, in order for a gene to be an independent agent by itself, it needs to have the knowledge of all other genes as well as all the non-genetic factors for expression of a simple trait. In reality, genes contain a very limited amount of knowledge which makes them no more than tools or parts of living organisms that are employed in the existence of life on earth. Biological life itself is incredibly complex and its sustainability requires a more comprehensive knowledge that is beyond our current understanding based on the genetic code.

Seyyidhan Mirza is a PhD candidate of Plant Breeding, Genetics, and Genomics. He can be contacted at seyyidmirza@gmail.com.

Notes

1. Siepel A., M. Diekhans, B. Brejová, L. Langton, M. Stevens, C. L.G. Comstock, C. Davis, B. Ewing, S. Oommen, C. Lau, H. Yu, J. Li, B. A. Roe, P. Green, D. S. Gerhard, G. Temple, D. Haussler, and M. R. Brent. 2007. “Targeted discovery of novel human exons by comparative genomics.” Genome Research. Cold Spring Harbor Laboratory Press; ISSN 1088-9051/07; www.genome.org
2. Cardno, A. G., Rijsdijk, F. V., Sham, P. C., Murray, R. M. & McGuffin, P. “A Twin Study of Genetic Relationships Between Psychotic Symptoms.” 2002. Am. J. Psychiatry 159, 539-545
3. Epinat-Le Signor, C., S. Dousse, J. Lorgeou, J.B. Denis, R. Bonhomme, P. Carolo, and A. Charcosset. 2001. “Interpretation of genotype x environment interactions for early maize hybrids over 12 years.” Crop Sci. 41:663–669
4. Kooter, J.M., Matzke, M.A., and Meyer, P. 1999. “Listening to the silent genes: Transgene silencing, gene regulation and pathogen control.” Trends Plant Sci. 4: 340–347

Four principles emerge as we examine the life of the Prophet Muhammad from a time management perspective [Canan 1994]. Interestingly, these are also the principles agreed upon by most contemporary experts of time management [Taylor 1998, Jasper 1999, Covey, Morgenstern 2000]. These are:

1. Appreciation of the value of time and, consequently, making the best use of every piece of available time.

2. The guidance of a mission, a set of values, and priorities in planning every activity.

3. Establishment of a time policy or a time budget.

4. The scheduling and completion of activities within allocated time slots.

Now we will give examples of how these principles were put to practice in the prophetic tradition.

Appreciation of the value of time

The value of time is emphasized in many verses of the Qur’an and in many prophetic sayings. In particular, God swears by time at the beginning of the chapter Asr in the Qur’an, meaning “time through the ages” or “afternoon.” It is the general opinion of the interpreters of the Qur’an that such references are intended to draw attention to those concepts and emphasize their importance. The remaining two verses of this short chapter reinforce this view: “1. By the (token of) time (through the ages)! 2. Verily man is in a state of loss. 3. Except those who believe and do righteous deeds, and exhort one another to truth and exhort one another to steadfastness.” Another such oath is to be found at the beginning of Chapter 93, Ad-Dooha or “The Morning Hours”: “(1) By the morning hours, (2) And by the night when it is still.” (*) The particular translation we have adopted here is by Uzunoglu [Uzunoglu 2003]. Other contemporary translations of the Qur’an include Abdel Haleem [AbdelHaleem 2004] and Cleary [Cleary 2004].

In the prayer books attributed to the Prophet Muhammad we see that there are prayers for every occasion [Gulen 2000]. Examples include prayers for beginning an activity, beginning a meal, ending a meal, leaving for a journey, returning from a journey, during the journey, looking in a mirror, during ill health, for rain, against excessive rain, against cold or extreme heat, when entering the bathroom, when exiting the bathroom, and countless others. From these prayers we learn that there is almost no time slot in the Prophet’s life that was not occupied with a useful activity or a prayer. It was observed on one occasion that the Prophet refused to greet a person who was sitting idly. He greets the very same person on his way back upon seeing them occupied with an activity. The following Prophetic saying summarizes his attitude: “The majority of humanity is at a loss as they do not recognize the value of two of God’s gifts: Health and (discretionary) time.” [Bukhari, Riqaq, 1997]

Guidance of a mission

After receiving the divine call, the life of the Prophet Muhammad was focused on living and conveying the message. His ultimate goal was to fulfill his mission as a servant and messenger of God. This involved two aspects: On the personal front a spiritual ascension towards the state of being a perfect human (insan-i kamil) as a servant of God and on the social front sharing the faith and practicing conduct that was pleasing to God and others. His values and priorities were shaped completely by the scripture as well as by the other communications of God that he received, which did not become part of the scripture. In his farewell sermon during his last pilgrimage, he is reported to have asked the present audience, which numbered in the tens of thousands: “Do you bear witness that I have fulfilled my mission as God’s messenger?” Of course the answer was a resounding yes, accompanied by tears [Gulen 2000].

Weekly time policy

In a weak prophetic tradition narrated by Ibn Abbas [Canan 1998, Harf 2000], the cousin of the Prophet, the regular activities of his days are listed: “Sunday is the day for planting seeds and construction. Monday is for travel. Tuesday is for giving blood. Wednesday is for acquisition and alms giving. Thursday is for bringing community matters to the governor. Friday is for weddings and spending time with your family. Saturday is for hunting for livelihood.” The authenticity of this narration is weak and therefore we cannot conclude that it is obligatory to perform these duties on these days. However, it does give the idea of designating specific days of the week for specific projects or activities. In another, stronger prophetic tradition, the Prophet was heard to say, “Seek knowledge on every Monday” [Fayz al-Qadr 1/543]. Other prophetic sayings emphasize the importance of Friday as a day of festivity and the early part of Friday as the time to clean the body and care for one’s clothing. Another established prophetic tradition is to fast voluntarily on Mondays and Thursdays. From the observations of his companions it has been firmly established that the Prophet, peace be upon him, established a weekly schedule with preferred activities on each day.

Daily time policy

The most detailed information about the time management of the Prophet Muhammad is available concerning his daily schedule. Two types of activities occupied his time: The spontaneous (un-programmed) activities and the regular (programmed) activities. The spontaneous activities included giving an audience to an envoy or a representative group, the meeting of an urgent need, or helping a stranger who spontaneously sought help. Such activities were accommodated within the time slots that were not dedicated to programmed activities. Furthermore, if a representative body were to arrive in Medina for a one-off meeting, then it would be scheduled at the first available time. However, if the group was to stay in Medina for a while, then the meetings with this group were included in the regular plan of activities. An example of such accommodation can be seen in the case of the representative group from the tribe of Thaqif. As the group was to stay in Medina for a while, the Prophet visited them and talked with them after each night prayer. When one evening he delayed his visit, the group asked him: “O Messenger of God, you did not come at the time you used to come today; you were late, what is the reason for this? [Usd al-Gaba 1/168].

Regular/scheduled activities

Regular prayer times form the framework around which all other regular activities are scheduled. Two aspects of the Prophet’s daily schedule were (1) The same activities were scheduled in the same time period every day, and (2) each activity had a designated time limit.

Regular daily prayers are ordered by God at specific times [The Qur’an 4/103] and the start and end times for each prayer were taught to the Prophet Muhammad by the Archangel Gabriel. In authentic prophetic traditions we learn that Archangel Gabriel asked the Prophet Muhammad to join him in performing each prayer at the beginning of the time period time throughout one day. The next day, they performed each prayer at the very end of the period that was dedicated to that prayer. The Prophet said “The best of deeds in God’s sight is the prayer that is performed in time” [Bukhari, Mawaqit al-Salat; Muslim, Iman]. While the beginning time for each prayer period is preferred, the prayer can be done anytime between these limits. If the time limit is exceeded even by a minute, the prayer is invalidated and the person has to perform a makeup prayer in the next period. It is easy to see that regular observation of these prayer times gives a person a high level of time consciousness. It also reveals the fallacy of the view that precise timing and punctuality are modern traditions.

Various accounts of the Prophet’s daily life tell us that he was very careful in the observation of his daily schedule. We understand this particularly from the observation that when the Prophet changed his schedule, this was a cause for worry in the community. For instance, one companion relates: “The Messenger of God (upon whom be peace and blessings) left his home at a time when normally nobody saw him outside.” [Usd al-Gaba 1/168, cited in Canan 1994]. Another one is: “The Messenger of God (upon whom be peace and blessings) ascended to the pulpit. He was never seen on the pulpit except on Fridays before.” [Ibnul Maja, Fitan, 33, cited in Canan 1994].

Night activities

The narrations from his companions tell us that the Prophet used to divide his night into three segments. One segment was dedicated to worship, one to his family and one segment to his personal matters. At times, he is seen as giving his personal time to his community in meeting with them and trying to address their needs.

The Prophet was observed to halt his daily activities after sunset [Mustadrak: 3/461, cited in Canan 1994]. This does not mean, however, that he rested for the remainder of the evening; he sometimes held meetings after evening or night prayer. As a general principle, he did not like sleeping before the night prayer or talking after it [Bukhari, Mawaqit, 13/23, cited in Canan 1994]. His wife Aisha (may God be pleased with her) reports that the Prophet, upon whom be peace and blessings, used to sleep during the early part of the night and wake up for worship during the later part [Ibn Maja, Iqama, 182, cited in Canan 1994]. On exceptional circumstances, the Prophet was observed to stay awake and deal with community affairs until late hours of the night.

The night stances (qiyam al-layl), the hours he spent in worship, reflection and prayers all occupy an important place in the Prophet’s life. He is reported to have spent on average between 2/3 to 3/4 of each night in worship, remembrance, reflection, and supplication. This corresponds to a period of 4 to 7 hours each night, depending on the season. He explains this emphasis on night prayers in the following way: “God descends to the first heaven of the earth every night and announces, ‘Is there anyone who repents; I will forgive, is there anyone who prays; I will accept,’ and this continues until early dawn” [Usd al-Gaba: 6/91; Ibn Maja, Iqama, 182, cited in Canan 1994]. He also likened his night stances to those of the Prophet David: “The best nightly prayer in God’s sight is that of David. He used to sleep during the early part of the night, then wake up and spend a third of the night in prayers and sleep a little again before dawn” [Bukhari, Tahajjud, 7; Muslim, Siyam, 189; Nasai, Qiyam al-layl, 14, available in Harf 2000].

Daytime activities

The Prophet prohibited his companions from sleeping after the morning prayer. He used to stay at the mosque until sunrise and have group conversations with his companions. The subjects of these conversations were both religious as well as entertaining, for example, poetry would be read or the dreams of the previous night would be related. It is understood that these hours were spent in a felicitous way, with companions laughing at times and the Prophet smiling [Nasai, Sahv, 98, Muslim, Ruya, 23, cited in Canan 1994]. The Prophet underlines the significance of these hours held for him with the following saying: “Sitting together with a group of companions and remembering God with them after the morning prayer until the sunrise is more valuable to me than fighting in the cause of God. The same is true for the hours after the afternoon prayer before sunset” [Usd al-Gaba: 2/466, cited in Canan 1994].

Following the conversation with his companions, the Prophet would then spend time with his family. On days when he was not fasting, he would have breakfast during this period. He is known to have eaten two meals each day, a late breakfast and a dinner. Towards noon, he would take a nap and encourage others to do the same, as this would help them to stay awake at night for prayers [Mednick 2002]. After the noon prayers came the time for community matters. The afternoon prayer was followed by time for the family once again. In the Meccan period, the Prophet was married to Khadeeja for 25 years, his only wife during this time. His multiple marriages occurred after she had passed away, when he was already over 50. The reasons and occasions for these marriages form the subject of a separate article. But suffice it to say that in general these marriages could be categorized into three types: (1) Marrying the widow of a martyr to take care of her and to honor the family. (2) Marrying the daughter or other relative of a community leader to establish family ties with that community to avoid armed conflicts. (3) Marriage with a woman of a special status so that woman could become a teacher and role model for Muslim women. This third function was especially important, as the aspects of faith that pertain to special circumstances of women could only be taught by the experience of the wives of the Prophet. The Prophet was observed to visit and spend equal, fixed times with his wives during his family time. Figure 1 depicts the time allowances in a regular day of the Prophet as estimated by this author.

Human biorhythm and activity changes

Researchers on human biorhythms tell us that multiple periodic biorhythms operate within the human body with different cycle times, changing from 90 minutes (ultradian) to daily (circadian), to longer than a day [Smolensky 2001]. As the human body operates with chemicals, hormones, and electrical signals, it needs to replenish these resources once in a while [Chafetz 1992]. One mechanism for achieving this is having a short break such as a nap [Rossi 1991, Mednick 2002] and another is to change one’s activity when feeling tired. the Prophet Muhammad points to this important fact by saying “Relieve us O Bilal!” Bilal was the chief caller to prayer. The Prophet was indicating that they were tired and less productive in the activity in which they were involved and that it was a good time to take a break and pray. “Relieve us” means “Please make the call to prayer” so the community will gather in the mosque for a congregational prayer. The interweaving of different activities in his daily schedule is another indication that the Prophet was cognizant of the effect of the biorhythm on one’s productivity.

Conclusion

The popular mental picture of the Prophet Muhammad in the non-Muslim world depicts a person who spent most of his time in the battlefield or enjoying the spoils of war. Nothing can be further from truth. In this article we examined the life of the Prophet Muhammad from a time management perspective. The picture that emerges from this analysis is very different from the popular perception in the west. We learn that the Prophet spent most of his time engaged in worship, prayer, remembrance, and supplications. The next two most important activities in his life were community matters, including spreading God’s message and family matters. We also learn that the Prophet was a very punctual time keeper. He did not waste even the smallest amount of time and admonished those who did. We learn that he kept a tight daily schedule to the extent that his companions became worried when this schedule was not observed. He designated certain days and hours of each day for certain activities. He encouraged staying awake after dawn and having a short nap at noon. He practiced such principles as eating moderately, sleeping moderately, and talking moderately, all of which ultimately help with better time management. He took advantage of every discretionary moment in life for remembering God and offering prayers. Every activity in his life was guided by his main goal of living and sharing God’s religion for a happy life on the Earth and in the Hereafter. Interestingly, many of these practices are now recognized and recommended by modern experts of time management. In summary, we witness a life that was lived fully and productively, yet opportunities for smiling were not neglected.

Yuksel A. Aslandogan is the Vice President of Institute of Interfaith Dialog, Houston, Texas.

References

• Abdel Haleem, M.A.S., The Qur’an: A new Translation, Oxford University Press, 2004.
• M.M. Khan, Sahih al-Bukhari: The Translation of the Meanings, Darussalam Publishers, 1997.
• Ibrahim Canan, Islam’da Zaman Tanzimi (Time Management in Islam), Cihan Publications, Istanbul: 1994.
• Ibrahim Canan, Kutub-i Sitte, Muhtasari Tercume ve Serhi (The Six Books of Hadith, Translation and Commentary), Akcag Yayinlari, Ankara: 1988.
• Chafetz, Michael D., Smart for Life, Penguin Books, NY: 1992.
• Cleary, T., The Qur’an: A New Translation, Starlatch LLC, 2004.
• Cleary, T., The Wisdom of the Prophet: The Sayings of Muhammad, Shambala Publications, Boston, MA: 2001.
• Stephen R. Covery, First Things First. Simon & Schuster Ltd, 1999.
• Fethullah Gulen, Prophet Muhammad: Aspects of His Life, The Fountain Publications, VA, 2000.
• M. Hamidullah, Introduction to Islam, Kitab Bhavan, New Delhi, 1992.
• M. Hamidullah, The Prophet of Islam, S. Muhammad Ashraf Publishers, Lahore, Pakistan.
• [Hart 1978] Michael H. Hart, The 100: A Ranking of the Most Influential Persons in History, Hart Publishing Company, Inc., New York: 1978.
• [Harf 2000] Harf Information Technology, Hadith Encyclopedia, contains 9 books of Hadith in Arabic, namely: Sahih Al-Bukhari, Sahih Muslim, Sunan Al-Tirmidhi, Sunan Al-Nasa’i, Sunan Abu Dawud, Sunan Ibn Majah, Musnad Ahmad bin Hanbal, Muwatta’ Al-Imam Malik and Sunan Al-Darimi, Cairo, Egypt, 2000.
• [Jasper 1999] Jan Jasper, Take Back Your Time, St. Martin’s Press, NY: 1999.
• [Mednick 2002] Sara Mednick, Ken Nakayama, Jose L. Cantero, Mercedes Atienza, Alicia A. Levin, Neha Pathak & Robert Stickgold. ” The restorative effect of naps on perceptual deterioration.” Nature Neuroscience, published online May 28, 2002.
• [Morgenstern 2000] Julie Morgenstern, Time Management from the Inside Out. Henry Holt & Co., September 2000.
• [Rossi 1991] Ernest Rossi, The Twenty Minute Break, The Ultradian Healing Response, Zeig, Tucker & Co., 1991. http://home.earthlink.net/~rossi/ultradia.htm.
• [Smolensky 2001] Smolensky, Michael, and Lamberg, Lynne, “Body Clock Guide to Better Health,” Henry Holt and Co., NY: 2001.
• [Taylor 1998] Taylor, Harold L., Making Time Work for You, Harold Taylor Time Consultants Inc, North York, Ontario, Canada: 1998.
• [Uzunoglu 2003] Nurettin Uzunoglu, The Holy Qur’an: Translation and Commentaries, Islamic Publications for the Holy Qur’an Association, Istanbul: 2003.

According to Al-Qushayri, fear forces a traveler on the spiritual path to hold back and refrain from displeasing God. As such, fear pertains to the future. Fear arises from one’s apprehension of being subjected to something displeasing, or uneasiness over not obtaining what is desired. In this sense also, fear pertains to the future. In many verses, the Qur’an points out the future results of one’s deeds and actions, and thereby seeks to establish a world that embraces the future, one in which it is possible to discern the future with both its good and bad elements.

Implanting fear in the hearts of its followers, fear concerning their end or whether they will die as believing Muslims, the Qur’an warns them to be steadfast in their belief and practice of Islam. Many verses cause hearts to tremble with fear, and are like threads with which to knit the lace of life. For example: Something will appear before them which they had never anticipated (39:47); and Say: Shall We tell you who will be the greatest losers by their works? Those whose efforts have been wasted in the life of the world while they thought they were doing good (18:103-4). How happy and prosperous are those who knit the “laces” of their lives with these “threads”! With such warnings, the Qur’an orients us toward the Hereafter and encourages us to consider it more important than anything else.

In His luminous Speech, God Almighty uses fear as a whip to force us to His Presence and honor us with His company.¹ Like a mother’s reproofs to her child that draws him or her to her warm, affectionate arms, this whip attracts the believer toward the depths of Divine Mercy and enriches him or her with the blessings and bounties of God; blessings and bounties that He compels humanity to deserve and receive out of His Mercy and Graciousness. For this reason, while every decree and command mentioned in the Qur’an and forced upon humanity originates in Divine Mercy and uplifts souls, they are also alarming and threatening.

One whose heart is full of fear and awe for the Almighty cannot be afraid of others, and is therefore freed from all useless and suffocating fear. In His luminous, hope-giving Speech, the Almighty tells people not to fear anything or anyone other than Him: Have no fear of them. Fear Me, if you are true believers (3:175); exhorts them not to suffer groundless phobias: Fear Me alone (2:40) and: They fear their Lord, overseeing them from high, and they do all that they are commanded (16:50); and praises those hearts that fear and hold only Him in awe: They forsake their beds to cry unto their Lord in fear and hope (32:16).

He praises such believers because those who arrange their lives according to their fear of God use their willpower carefully and strive to avoid sins. Such sensitive and careful souls fly in the heavens of God’s approval and pleasure. The following is an appropriate saying by N. ’Abd al-Rahman ibn ’Ahmad al-Jami, the author of Lujja:

If you are fearful of God’s wrath, be steadfast in religion,
For a tree holds fast to earth with its roots against violent storms.

The lowest degree of fear is that required by belief: Fear Me, if you are (true) believers (3:175). A somewhat higher degree of fear is that arising from knowledge or learning: Among His servants the learned alone fear God truly (35:28). The highest degree of fear is that combined with awe and arising from one’s knowledge of God: God orders you to fear Him in awe (3:28).

Some Sufis divide fear into two categories: awe and reverence. Although these terms are very close in meaning, awe connotes the feeling that leads an initiate to flee toward God, while reverence causes an initiate to take refuge in Him. An initiate who continuously feels awe thinks of fleeing, while one seeking shelter strives to take refuge in Him. Those choosing to flee make progress on the path difficult for themselves, for they live an ascetic life and suffer the pains of separation from the Almighty. However, those holding Him in reverence drink the sweet, enlivening water of nearness, which comes from taking refuge in Him.

Perfect reverence was a characteristic of all Prophets. When in this state, the Prophets fell down nearly dead, as if they had heard the Trumpet of Israfil and had been brought before the full Majesty and Grandeur of the Truth. They were always conscious of the meaning of: When His Lord revealed (His) glory to the mountain He sent it crashing down, and Moses fell down in a swoon (7:143). Among those brought near to God, the one nearest to Him and the master of reverence, upon him be peace and blessings, said:

I see what you do not see and hear what you do not hear. If only you knew with what the heavens creak and groan. In fact, they must do so, for there is not even the space of four fingers’ breadth in the heavens where angels do not prostrate themselves. I swear by God that if you knew what I know (with respect to God’s Grandeur), you would laugh little but weep much. You would avoid lying with your wives and cry out prayers unto God in fields and mountains.²

Here, the Prophet reveals his reverence that leads him to take refuge in God, and describes the awe of others that causes them to flee. Abu Dharr expresses this attitude of fleeing in his addition to this Prophetic Tradition: I wish I had been a tree pulled out by the roots and cut into pieces.

One whose soul is full of reverence and awe of God does not commit sins, even if he does not seem to feel fear. Suhayb was one of those overcome with awe of God. God’s Messenger, upon him be peace and blessings, praised him, saying: What an excellent servant Suhayb is! Even if he did not fear God, he would not commit sins.³

One who fears God sometimes sighs and sometimes weeps, especially when alone, in an attempt to extinguish the pain of being separated from Him, as well as the fire of Hell for him or her, which is the greatest distance between him or her and God. As stated in the Tradition: A man who weeps for fear of God will not enter Hell until the milk drawn (from a mammal) is put back into the breasts (from which it was drawn).⁴ Shedding tears is the most effective way of putting out the fires of Hell. A believer sometimes confuses what he or she has done with what he or she has not done and, fearing that the action has arisen from his or her fancy or carnal self due to a personal failure to resist temptation, feels great regret and seeks refuge in God. The description of such souls is found in the following Tradition:

When the verse: Those who give what they give while their hearts are in awe, because they are to return to their Lord (23:60) was revealed, ‘A’isha, the Prophet’s wife, asked the Prophet, upon him be peace and blessings: Are those (who are in awe because they are to return to their Lord) those who commit such major sins as fornication, theft, and drinking alcohol? The Prophet, the Glory of Mankind, answered: No, ‘A’isha. Those mentioned in the verse are those who, although they perform the prescribed prayers, fast, and give alms, tremble with fear that such acts of worship may not be accepted by God.⁵

Abu Sulayman Darani says that although a servant must always be fearful (that God may not be pleased and therefore punish him or her) and hopeful (that God may be pleased), it is safer for one’s heart to beat with fear and reverence.⁶ Sharing the view of Darani, Shaykh Ghalib expresses his feelings of fear: Open the eyes of my soul with a thousand-fold fear!

Notes

1. Fear is an essential ingredient in the stages of one’s relation- ship with God. When the person is able to remain between and balance fear with hope, true education and training in the way of God begin. While it may seem to us that we are being “forced” by God into His Presence, in reality we are not, for this is only one of God’s ways of reminding us of our true purpose. This is explained in the following hadith: “My relation to you is like a man who forces back those who are throwing themselves into a fire. You are throwing your- selves into a fire (by committing sins), but I am pulling you back.” This metaphor informs us that there are those who, although good-natured, believing, and inclined to good, cannot completely refrain from committing sins. To help them in their struggle to avoid sins, God, in His Mercy, may cause some misfortune to come upon them.
2. Tirmidhi, Zuhd, 9; Ibn Maja, Zuhd, 19.
3. Al-‘Ajluni, Kashf al-Khafa’, 323.
4. Al-Tirmidhi, Fada’il al-Jihad, 8; Al-Nasa’i, Jihad, 8.
5. Al-Tirmidhi, Tafsir al-Qur’an, 24.
6. Al-Qushayri, Al-Risala, 128.

The surfaces of soap bubbles have a very important feature. These surfaces which have minimum surface-tension potential energy also have minimum areas. That is, soap bubbles or clusters have a natural tendency to minimize area for the volumes they enclose. Two different frames and the areas formed are shown in Figure 1. For a given closed frame, at least one such minimal area can be formed; however, mathematicians have had to strive to prove it.

The famous mathematician Richard Courant (1888–1972), together with his students, did soap bubble experiments with various frames.

Minimal areas can also be formed by using more than one closed frames. Figure 2 shows the minimal surfaces obtained by holding two circular frames parallel. If the frames are kept too far from each other, no surface will form. If they are kept sufficiently near to each other, surfaces similar to those shown in Figures 2a and 2b will be obtained. If they are kept close enough to each other, then three minimal surfaces adjacent to each other as shown in Figure 2c can form.

The minimum energy principle is commonly observed not only in living organisms, but also in lifeless matter. A chain will take the shape which produces the least potential energy of attraction when it is fastened at two points onto a rod as shown in Figure 3. This form (function) is called “catenary” in mathematics.

The areas which are formed as a result of rotating the catenary curve around an axis A are called catenoids. Two different types of catenoids are shown in Figures 4a and 4b. As presumed, catenoids are minimal areas and can be obtained by the use of soap bubbles. If such formations were selected and used in everyday utensils, such as glasses, dishes and so forth, ideal shapes which cause the least loss of heat could be designed.

If the katenoid shown in Figure 5a is cut from its edge as shown in Figure 5b and turned by being slightly extended, a helical form or a helicoid will be obtained as shown in Figure 5f. This helicoid also is a minimal surface. Architects have widely used this form in spiral-shaped staircase structures. See Fig. 6.

Fig. 1-Closed frames and soap film surfaces formed1 Fig. 2a&b–Single foam film surfaces over two parallel circular frames1 Plus, the perpetual screw system which is widely in use in technology is also in a form similar to this geometry.

If a cylinder of the smallest volume that can house a helicoid is drawn (Fig.7a) and the lines on which the surface and the cylinder intersect are marked, then a double helix structure (Fig. 7b) is obtained; this is used in modeling DNA molecules which are the genetic codes of living species.

There are two elementary principles related to soap bubbles. The first principle says that if a bubble touches a surface that supports it, it unites with that surface in a way to make 90° angles. The soap bubble on that plain surface forms into a semi-spherical shape and the angle between the bubble surface and the supporting surface will be 90° at every point of contact. The second principle says that if three soap bubble surfaces come together, they form 120° angles along a line. If soap films come together within a tetrahedron frame as in figure 8, then the angles between the lines will be 109° 28′ 16″.

The Steiner problem which is an elementary problem in mathematics can be solved by the application of the 90° and 120° principles. The Steiner problem investigates how n points over a surface can be united in the shortest way by a web. Two transparent surfaces are connected with thin and parallel pins of equal lengths and then dipped into a soapy solution. When it is taken out, soap films will form. These films have a 90° angle with the supporting transparent surfaces and when three soap films come together, they connect at 120° angles with one another.

When observed from above, the intersecting lines between the soap film and one of the surfaces give the shortest web which unites the points in n numbers. How four points are united is shown in Figure 9a and how five points are united is shown in Figure 9b. Someone seems to have equipped lifeless objects such as soap bubbles with the ability to solve complex problems like a math genius.

Periodically repeated minimal areas have been observed on walls separating organic and inorganic substances in the skeletons of certain sea animals like the sea urchin and the starfish. Figure 10 shows the micro structure of a sea urchin’s skeleton. It has calculated that the geometry of its skeleton has perfectly been shaped in such a way as to prevent the extension of possible cracks.

Experiments with soap bubbles have been a source of inspiration also for architects. Such experiments have yielded inspiration for roof and tent designs. The German architect Frei Otto is one of the most eminent names in this regard. Figure 11 shows the minimal areas which Frei Otto managed to obtain by dipping hair-thin threads in soapy water.

In order for such a soap bubble model to be converted into an architectural structure, it is carefully photographed and precisely measured. Later, solid models are made and tested in wind tunnels. The tensile pressures likely to form under loads of wind and snow are measured by special precision instruments. In real structures, thin steel cables having high tensile strengths replace the hairy threads, and transparent plastic and synthetic materials replace the soap bubble film.

Figure 12 shows roof of the Munich Olympic Stadium, Figure13 shows the roof of the Munich Olympic Athletic Arena and Figure 14 shows the roof of the Olympic Swimming Arena in the same city. All these roofs have been designed and erected using the minimal surfaces obtained from soap bubble experiments.

Children love playing with soap bubbles very much; they usually blow a round circle after dipping a wand into soapy water and then watch the bubbles flying out of it. However, it is not only children who play with soap bubbles and soap films. Scientists have, for hundreds of years, been doing experiments with soap bubbles, developing mathematical theories, obtaining various surfaces and transferring the compiled data into technology.

Experiments with soap bubbles have been a source of inspiration also for architects. Such experiments have yielded inspiration for roof and tent designs.

2) These roofs can easily be erected, dismantled and transported to elsewhere, whereas traditional buildings cannot easily be re-located.

3) These structures which are designed according to tensile strengths are very sturdy all over, whereas the tensile pressures of classical buildings are so high that extremely heavy materials such as concrete and brick are used in order to balance the pressure.

The structures of light and strong materials granted to living things are splendid. The lightness and endurance of our skeleton system, the perfect endurance in the stems of slender plants such as wheat and barley, the extremely thin and elastic structure of a fly’s wing, and thousands of similar examples can be given.2 The word of German architect Frei Otto in this subject are expressive: “Biology has become indispensable for architecture.” Witnessing similar perfections also in inanimate structures such as soap bubbles proves that laws in nature originate from the same hand.

Obtaining minimal surfaces has become much easier as a result of immense increases in computer capabilities. Extremely complicated minimal surfaces which can be obtained through computer-aided-designs and calculations have become easily available as alternatives to soap bubble experimentations. If we, as human beings, are aiming to realize developments in science and technology, we should look,more carefully and meditatively, at events which are seemingly simple and unimportant around us and we should also discover the beauties and perfections that God has granted us and put them into service of humanity. The more our designs are compatible with the laws of nature, the higher our chances of success will be.

References

• S. Hilderbrandt, A. Tromba, The Parsimonious Universe, Springer-Verlag, New York, 1996.
• M. S. Polatöz, Tabiatta Mühendislik (Engineering In Nature), Kaynak Publications, Izmir, 2003.
• A. B. Smith, The stereom microstructure of the echinoid test. Special Papers in Palaeontology, 25, 1–85, 1981.

Let me give you some everyday examples. For instance, most customer complaints (eighty percent) stem from a very few reasons (twenty percent). Eighty percent of problems in a company are caused by twenty percent of the employees. This idea is often applied to data such as sales figures: twenty percent of clients are responsible for eighty percent of sales volume. Eighty percent of our expenditure, stems from twenty percent of the items we buy. If we can differentiate cheap items from expensive items, then, we can develop ways to save on our shopping. We need to realize that we make eighty percent of our phone calls to the same twenty percent of our acquaintances. If we look at the clothes we wear, we realize that eighty percent of the time we wear the same twenty percent of them. We can also use this principle to plan our daily schedule and to order things according to their importance. For example, we may calculate the length of the time to do something and determine the importance of the thing we are to do. We calculate the percentages according to all the things waiting to be done. Later, with twenty percent of our time, we put our attention and energy into the things which carry eighty percent of the importance. We leave the things with twenty percent importance to later because those things require eighty percent of our time. What needs to be observed here is that quality is preferred over quantity. Some of us postpone tasks which can be done in a short time, due to the belief that we can somehow do it later. According to the Pareto Principle, it is not a good idea to delay things which are important in terms of quality even if they take a bit of our time to carry out.

Bediüzzaman used this rule very intelligently in his works in terms ofat explaining the wisdom behind seeming realities. manay-Ii harfi. For example, in the answer to the second question under the Twelfth Letter, Bediüzzaman uses the Pareto Principle persuasively as an answer to the following question: “As sending Prophets has caused many or even most people to become unbelievers because of Satan’s seduction, how can you say that creating evil things and acts is good, that raising Prophets is a mercy for humanity?”

In this answer, Bediüzzaman emphasizes the importance of quality over quantity. According to him, quantity has no importance in relation to quality. Moreover, Bediüzzaman shows that it is not an evil to lose atheists and hypocrites, who are many but less important in terms of quality, when you compare them with prophets, saints, and the righteous who are few, in terms of quantity. It is interesting that he uses a twenty percent to eighty percent ratio in each of his two examples:

“As quality is always far more important than quantity, we should consider only qualitative values in making our judgment. To cite an example: 100 date-stones are worth only 100 cents until they are planted and grow into palm trees. But if only 20 grow into trees and the remaining 80 rot because of over-watering, how can you say it is an evil to plant and water them? Everyone would agree that it is wholly good to have 20 trees at the expense of 80 date-stones, since 20 trees will give 20,000 date-stones.

Again, 100 peacock eggs are worth maybe 500 cents. But if she sits on the eggs and only 20 hatch, who can say it is an evil that 80 eggs were spoiled in return for 20 peacocks? On the contrary, it is wholly good to have 20 peacocks at the expense of 80 eggs, because the 20 peacocks will be worth far more than the eggs and will lay more eggs.”

In another example, Bediüzzaman explains why he remained distant from politics in the Thirteenth Letter as a response to the third question:

“…We are travelers in this world. Basing myself on the Qur’an’s light, I say that humanity has reached a marsh in this century. Whole caravans of humanity are trying, with great difficulty, to advance in this putrid marsh. A small minority follow a safe way and some have extricated themselves, but the majority continues to flail around in the dark. Although 20 percent of this majority seems quite happy with this struggle, mistaking its dirt and filth for musk and ambergris, whereas the other 80 percent knows that it is in a filthy marsh but cannot see the safe path (leading them out). We must bring that majority out of the marsh. To do so, we must use a mace to knock the 20 percent back to its senses or provide the 80 percent with a light to see a way to safety. I see that most people hold maces, but almost no one gives light to the helpless 80 percent. If some still have light, they are not trusted because they also carry maces. People are afraid of being beaten after being drawn to the light. Besides, the light may be extinguished

if the mace is broken.”

In this example, Bediüzzaman states that the first thing that needs to be done for those who have deviated from the right path is to show them the Qur’anic truths instead of helping them through politics which is associated with hitting someone on the head. Again it is interesting to see that Bediüzzaman used the Pareto Principle to explain the example. Bediüzzaman considers human beings to be walking in a dark swamp. Moreover, he believes that the priority is to enlighten most of the people’s road (eighty percent) with a small (twenty percent) effort, rather than to help a small number of people (twenty percent) with a large amount of political power (eighty percent of effort).

In the Twenty-Eighth Letter’s seventh matter, Bediüzzaman emphasizes that twenty percent of scholars surpasses the other eighty percent in terms of quality while he is examining how strong truths seem weak in the hands of weak people: “Eighty percent of mankind are not investigative scholars who can penetrate to reality, recognize reality as reality and accept it as such. They rather accept matters by way of imitation, which they hear from acceptable and reliable people, in consequence of their good opinions of them.”

Therefore, it is possible to say that Bediüzzaman, an investigative observer, found the Pareto Principle without using any contemporary methods such as surveys. Besides being known as an eminent Islamic Scholar and Saint of Islam admired by most of the people, Bediüzzaman use of mathematics, physics, astronomy, and sociology in the Risale-i Nur show us how to contemplate the universe using modern science.

Persuasion through Probability in the Risale-i Nur

Bediüzzaman often uses mathematical logic and probability in his works which were written to save the faith from evil (thought). For instance, under the section on the stratagems of Satan in the Twenty-Ninth Letter, Bediüzzaman states how harmful it can be if you use the feeling of fear against its purpose of creation. He gives an example of how he persuaded a person, who had to fear of drowning, to embark on a boat willingly without any fear through giving an excellent example of probability:

An important man (may God’s mercy be upon him) was afraid to travel by boat. One evening, we went to Galata bridge to take the ferry to Eyup.

He did not want to get on, saying that he feared he would drown. When I asked him how many boats were in the Golden Horn, he replied that there might be as many as one thousand. When I asked him how many boats sank each year, he replied usually one or two, and sometimes none.

I made this analogy: “Since a year has 365 days, your chance of drowning is 1:365,000. Why does such a small chance scare you?” I asked: “How much longer do you expect to live?” He answered: “Maybe 10 years; I am old already.” I contunied: “As there are 3,650 days in 10 years, your chance of dying today is 1:3,650. But since we do not know when we will die, you could die at any time. So repent and weep! Write your last will and testament!”

Seeing the truth in my words, he got on the boat even though trembling. On the boat, I told him: “God Almighty placed fear in our nature so that we might preserve our life, not ruin it. He did not give us fear to make life an unbearable burden full of pain and torment. If there is a risk of 1:2 or 1:3 or 1:4, or at most 1:5 or 6, it may be permissible and tolerable to fear and avoid the risk. But to fear a chance of 1:20, 1:30, or 1:40 is groundless suspicion, a sort of paranoia that changes life into a torment.”

And surely in the cattle (feeding on the pastures of the revived earth) there is a lesson for you: We give you from that which is within their bodies, (marvelously distinguished from) between the waste and blood, milk that is pure and palatable to those who drink. (Nahl 16:66)

Ruminants, probably the most abundant of the herbivores such as cattle, sheep and goats, are foregut fermenters with a four-chambered stomach (rumen, reticulum, omasum and abomasum) and are an essential component of utilizing marginal land in the world in a sustainable way.

In the verse above from the Qur’an, the Creator and the Sustainer of the universe draws our attention to many of the benefits we get from domestic animals. While the main message of the verse is easily understandable to the general reader, it also contains some concise hints, even descriptions about the physiological details of milk production in ruminants that would be fully understood and explained by science only centuries after the Qur’an was revealed. The purpose of this article is to explain this process in a general sense and milk production in some detail.

Mammals are generally categorized according to the dietary habits into three classes-flesh-eating (carnivore), plant-eating (herbivore) and both flesh and plant-eating (omnivore). In a sense, humans (omnivores) and carnivores depend on herbivores for their nutrition. Generally speaking, all humans and animals in the world have directly or indirectly benefited from the plants. The ability of herbivores to utilize plants as their main energy source is dependent on symbiotic microorganisms which live at various sites within their gastrointestinal tract. The animal provides the microorganisms with food and habitat for growth and the microorganisms provide the animal with fermentation acids and microbial protein.

Herbivores are divided into two types, those with post-gastric (hindgut) fermentation and those with pre-gastric (foregut) fermentation. Fermentation is a chemical process during which microorganisms obtain energy from organic products. Ruminants, probably the most abundant of the herbivores such as cattle, sheep and goats, are foregut fermenters with a four-chambered stomach (rumen, reticulum, omasum and abomasum) and are an essential component of utilizing marginal land in the world in a sustainable way. Rumen and reticulum contain millions of microorganisms, which form about 3 to 10 percent of rumen fluid.

A major reason why human beings keep ruminants is their ability to convert food which humans find inedible-or at least unpalatable-to food (meat, milk) which humans can eat. They play an important role in the livelihood of farmers throughout the world, providing sustenance such as milk and meat, manure for crop production, cash income from sales of their products and a safety net of capital assets to face risks and misfortune in harsh environments. Currently, humans obtain about fifty percent of the meat and most of the milk they consume from ruminants. Scientists who have conducted studied on ruminants have developed cow breeds, which have higher milk and meat production than traditional cow breeds, and thus supplied an important development to meet the nutritional requirements of humans.

Pre-gastric fermentation provides three important nutritional advantages to the host animal.

First, cellulose and other plant polysaccharides are brought into solution and become available as energy sources. Cellulose is the most abundant natural carbohydrate polymer in nature, but mammals do not produce enzymes that can degrade it. Ruminant animals utilize cellulose via a symbiotic relationship with ruminal cellulolytic microorganisms. During ruminal fermentation, microorganisms ferment the carbohydrates to produce energy, gases (methane and carbon dioxide), heat, and volatile fatty acids (VFA) in the rumen. Effective digestion of plants requires a means of dealing with cellulose, the most important structural material of plants, which is extremely insoluble and remarkably resistant to a chemical attack. Cellulose digesting enzymes that are called cellulases and produced by microorganisms are also present in the intestinal tract of several invertebrates that feed on wood and similar plant products. Rumen harbors the different functional groups of the microbial population, which is responsible for about seventy percent of total digestion in ruminants, and the ability to digest cellulose has been ascribed to a large number of bacterial, fungal and protozoal species isolated from the rumen.

The energy content of plants is low, and the herbivore must consume a large quantity in order to satisfy its energy requirements. Therefore, herbivores spend a lot of time eating; eight or more hours per day may be spent eating.

Secondly, the rumen microorganisms can utilize non-protein nitrogen for growth, converting it into microbial protein which becomes available to the host. Proteins provide the amino acids needed for maintenance of vital functions, reproduction, growth and lactation. Non-ruminant animals need pre-formed amino acids in their diets, but ruminants can utilize many other nitrogen sources because of their rare ability to synthesize amino acids and protein from non-protein nitrogen sources via a symbiotic relationship with ruminal microflora.

Ruminants possess a rumeno-hepatic nitrogen circulation mechanism, which does not exist in non-ruminant animals, in order to save nitrogen. By this mechanism, ruminants can be fed non-protein nitrogen sources such as urea and nitrate when nutrients are in short supply to obtain high quality milk protein. Feed proteins are degraded by microorganisms in the rumen via amino acids into ammonia. Ammonia is used by bacteria to build their proteins and any excess of it is absorbed through the rumen wall into the blood and then converted to urea in the liver. When a diet is low in nitrogen, large amounts of urea (which is normally excreted in the urine) return to the rumen where it can be used by the microbes. In non-ruminants, urea is always entirely lost in the urine. If ammonia levels in the rumen are too low there will be a nitrogen shortage for bacteria and feed digestibility will be reduced. Too much ammonia in the rumen leads to wastage, ammonia toxicity, and in extreme cases, death of the animal.

Thirdly, vitamin synthesis by the microbial population makes the ruminant animal virtually independent of dietary sources of all vitamins, except for vitamins A and D.

However, rumen fermentation also brings some disadvantages. First of all, rumen metabolism causes environmental pollution. Methane is produced as a natural consequence of the anaerobic fermentation; it is a potent greenhouse gas. Dairy farming is the largest agricultural source of methane, one of the greenhouse gases. Furthermore, the major environmental concern associated with the animal industry is ammonia volatilization, which increases atmospheric acid deposition because of the impact of nitrogen-rich excreta on the environment. Therefore, worldwide, scientific research projects have been carried out to find sustainable strategies for reducing emissions of the greenhouse gas methane and ammonia volatilization from domestic ruminants to the environment.

In conclusion, the symbiotic relationship between ruminants and ruminal microorganisms plays an important role in the recycling of nutrients between humans and plants. This relationship also contributes to human life by converting low quality nutrients (grass and hay) to high quality food (meat and milk). Humans will benefit more from ruminants as scientific knowledge about relationships between ruminants and rumen microorganisms advances.

Zubeyir Altuntas has a PhD in Molecular Medicine. He is a research associate in Immunology Department of The Cleveland Clinic.

Serve my spirit chants from the tongues of beyond.

Do so and quench the storms that besiege my heart,

Just like You lend your hand to the hopeless.

You are that compassionate one; to me

Allow a gift and join my way to your land.

In every obscurity, a brightening sign from your presence

Send to my heart; cover my poverty with your gift.

I am spiraling down from one exile to another,

Let the day shine, end the time of darkness,

You are the owner of this grieving heart of mine,

Appear to me, please, like You do to everyone.

As I wait in excitement for a new reunion,

Let the joys of your compassion descend to my heart.

Have my spirit take wings with the flood of your love,

Soothe my afflictions of separation.

Let me feel the moment of your appearance

My perspectives all colored with eternity

I shall see the time when ardor converts to reunion

It matters not if I am engulfed in flames

Let me burn, for that state is my water of life.

Matter dissolved in the bosom of metaphysical

Spirit lies in my heart to ambush your appearance.

Mesmerized sentiments on the horizon of vision.

As nothing can be heard but Him

What reaches ears is the composition of emotions,

Clocks know not tick-tock, nor days rise and fall.

Time and space are the mysterious geometry of the unknown.

Translated from Turkish by Sermed Ogretim

There are a great many similarities between the three monotheistic traditions, Judaism, Christianity, and Islam. The central goal of the religious journey in these Abrahamic traditions is to acknowledge the Creator and to love Him by obeying His wise and compassionate guidance. A common area where almost all the doctrines of the three traditions are overlapping is unquestionably “morals.” Decency, chastity, modesty, righteousness, and purity are virtues that believers are encouraged and required to struggle to achieve.

When people look at Muslim women who wear a headscarf, usually they only notice the headscarf as being different than Western-style clothing. Many believers who wear a headscarf prefer to use the term “modest dress” since it captures the essence of the practice better. Modest dress is prescribed to both men and women in the Qur’an. The general guidelines include covering certain parts of the body, wearing loose and non-transparent clothing to conceal the silhouette, and to dress in such a way as not to draw attention to one’s self. Modest clothing and covering the body is enjoined for men as well as for women; men are advised to cover at least between the knees and the navel, whereas for women the only parts that can be revealed are the face, hands, and feet. This difference is solely due to the physical nature and attractiveness of the female body, and should not be misinterpreted as gender inequality. Still, most men prefer to cover themselves from head to toe especially during prayer as a sign of respect in the presence of God Almighty.

Nevertheless, some people have a hard time grasping why the hair is so important. First, the hair is only one of the many parts that need to be covered. Second, if hair was not so attractive, women would not spend hours in front of the mirror or spend hundreds of dollars to make their hair pretty! However, the concept of covering in Islam is not restricted to only the headscarf, which would be undermining the meaning and effect of this practice. The underlying principle is to keep your beauty to yourself, your spouse, and those of the same sex, so that you will not be viewed as an “object.” The ultimate goal is to be modest before God and other human beings. Western feminists contend that one of the greatest problems of our age is the reduction of women to mere objects that are valued only for their physical beauty. I must add, though, that in Islam, physical beauty and marital relations are not viewed as a sin or something to be ashamed of. They are a gift of God and we are to enjoy them within the limits prescribed by God.

In the Qur’an, God has commanded believing men and believing women to act in certain ways to avoid indecent interaction with the opposite sex, which has great repercussions for individuals and society in this world and the Hereafter. Islam is a religion of prevention and protection, rather than a religion of punishment. All aspects of Islamic law aim to prevent sin in order to avoid punishment that would otherwise be necessary to ensure perfect justice. (It is also important to point out that in Islam, sin is regarded as a transgression against one’s self or a state of being away from God and acting contrary to our own nature) In other words, God knows His creatures and their weaknesses best and lays down guidelines to keep them from sinning because of His love and mercy for His creatures. Modest dress also has the same logic and nature. God has commanded it in the Qur’an and Prophet Muhammad implemented it in his life and taught it to his followers for sound and compelling reasons.

The practice of wearing modest dress existed in various cultures and religions prior to the advent of Islam. Hence Islam did not invent the covering of one’s hair or modest dress in general. Veiling (I use the term here to refer to wearing a headscarf and not to covering the face as the term “veil” may also connote) was a common practice in the Byzantine Empire during the Hellenistic era and also among the Sassanids of Persia. The veil was a sign of respectability and high status and was used to distinguish noblewomen from slaves and unchaste women who were not allowed to cover their heads. Subsequently, the practice was established in the Judaic and Christian systems ¹ and the Arabic peninsula at large (even prior to the advent of Islam).

Judaic doctrines and traditions have emphasized the covering of hair and modest dress throughout history. Rabbinic law forbids the recitation of prayers in the presence of a bareheaded married woman, since it is considered nudity. ² Jewish women in Europe wore the headscarf until the end of the nineteenth century when the pressures of a secular society triumphed over religion. Today, many Jewish women cover their hair in synagogues, yet only certain sects such as Hasidic Jews continue the practice in everyday life by wearing a wig.

The place of veiling in Christianity is as prevalent as in Judaism. The most obvious sign is the modest dress nuns have been wearing for centuries. Veiling was part of the Christian tradition, not exclusively for nuns: “And Rebekah lifted up her eyes and when she saw Isaac… she took her veil and covered herself” (Genesis 24:65). The Catholic Church had a canon up until the 1950s requiring women to cover their hair inside a church. Certain Christian denominations such as the Amish and the Mennonites still retain a head covering for women.

Likewise, there is a strong connection between clothing, modesty, and morality in Islam. Thus, the concept of modesty extends beyond mere clothing and encompasses austere manners. This ideal code of conduct and modest dress are required from both men and women. There is strong emphasis on the protection of people’s dignity in the Qur’an. (For instance, assaulting someone with words or slander is a grave transgression.) One of the most compelling reasons for modest dress in the Qur’an is modesty and to protect women from molestation. It is not a sign of male superiority or of high status, as was the case in ancient societies.

And tell the believing women that they (also) should restrain their gaze (from looking at the men whom it is lawful for them to marry, and from others’ private parts), and guard their private parts, and that they should not display their charms except that which is revealed of itself; and let them draw their veils over their bosoms, and (tell them) not to display their charms to any save their husbands, or their fathers (and grandfathers and both paternal and maternal uncles), or the fathers of their husbands, or their sons, or the sons of their husbands (both their own and stepsons and grandsons), or their brothers (and foster- and step-brothers), or the sons of their brothers, or the sons of their sisters, or the Muslim women and the women of good conduct with whom they associate, or those their right hands possess, or the male attendants in their service free of sexual desire, or children that are as yet unaware of femininity. Nor should they stamp their feet (i.e. act in such a manner as) to draw attention to their charms (and arouse passion of men). And O believers, turn to God all together in repentance that you may attain true prosperity. (Nur 24:31)

Reasons for wearing modest dress

First and foremost, it is essential to know that “There is no compulsion in religion” (Baqara 2: 256). Faith is a personal matter between a believer and her Creator. Likewise, choosing to put one’s faith into practice is a natural outcome of the believer’s spiritual journey. I decided to start wearing the headscarf after about two years of soul searching.

Despite being raised in a Muslim family and a predominantly Muslim society, I was taken by the numerous positivist philosophies sweeping away the young generations. I did have a vague belief in God that I never really thought about or confirmed in my heart and my mind. Hence, I did not really know what I believed in and why, which made it all the easier to drift away on the currents of disbelief. I cannot thank God enough though for bringing certain seemingly difficult incidents into my life that forced me to question who I was and where I was going.

As a matter of fact, every person is endowed with the inner urge to find meaning in his or her existence. If and when we choose not to shut off these existential questions and try to find satisfying answers, our personal quest for our Creator begins. We are all given numerous faculties, such as our mind, heart, senses, and so forth, that are meant to be used in this quest. By observing the universe and our own continuous creation, we can witness that there is no deity but God, and that He is the Creator of causes and effects simultaneously. This confirmation compels us to heed the message of God (the scriptures) and to read it with an open mind and heart to verify its truth. Once we confirm that the Qur’an is indeed our Creator’s message sent to us personally to inform us of the purpose of our creation, then our worldview is transformed. In a way, the Qur’an is like a manual. It is “our” manual, teaching us how best to use our faculties and our lives. God is telling us why and how He creates us (what our reality is) and what sort of attitude and conduct is in harmony with our creation (our nature, fitrah). If we follow His recommendations, which are glad tidings (bushra), we will be at peace with ourselves and the universe. He also warns us that when we do not follow the instructions in the manual, we may harm ourselves. In other words, we will be unhappy and live in a “hellish” state of mind and heart in this life and the Hereafter. It is ultimately our choice (since we are given free will) to heed and follow this manual or not. Every believer can experience and attest to the truth of the message in their life (or not).

Analyzing the messages in the Qur’an from this paradigm, we may find endless wisdom and mercy in its recommendations. The following is a summary of the many wisdoms and the mercy I see in the prescription of modest dress for all believers who may choose to adopt it in their lives, and this is why I decided to start practicing it:

A. Individual level: Inner peace and harmony

Adhering to the guidelines of Islamic modest dress brings inner peace to the individual for several reasons. Modesty and striving to mold one’s self in Islamic manners helps to discipline our ego which is the main source of personal ills. When I use the term “Islamic.” I am particularly referring to the literal meaning of the word Islam, “submission.” So, a Muslim is someone who tries to submit her free will to the Truth, that is, the truth that we (and everything else around us) are being sustained and created continuously by God, and do not exist independently. Our ego, which is only one of the many faculties we have, is given to us as a tool. By striving to discipline its excessive desires, and channeling them in a positive direction, we transform ourselves for the better. ³ Submitting to the wisdom and compassion of God and obeying His recommendations about how we should dress is only one of many aspects of trust in God. Adhering to modest dress always reminds us that God is Ever-Seeing and that we are constantly in the presence of God. This is the utmost source of inner peace.

As a side note I would like to also add that many women mention that wearing modest dress frees them from the pressures of society to conform to a particular physical type or to fashion. Knowing that they are not being judged as feminine “objects” helps to enhance their self-esteem. When we dress and act modestly, others value us as human beings based on character and intelligence.

B. Family life: Solidarity and peace

The family is considered a vital unit in Islam. A peaceful marriage is essential for many reasons, one of which is the adequate upbringing of children. The break up of families leads to crisis for family members as well as society as a whole. That is why divorce is described as the most disliked of the permissible practices. The practice of modest dress and piety by both husbands and wives may help to maintain the solidarity of the family. Being extremely careful about the way one acts, talks, and dresses around the other sex may serve as a barrier preventing many indecencies from occurring. As I mentioned above, Islam is a religion of prevention (vs. punishment). Therefore, all the ways to temptation are blocked in case we destroy our lives in this world and the Hereafter. Statistics leave no doubt that these incidents are very common in both Western and Eastern societies in this century due to the decay of the role and importance of religion in the face of the rise of materialism.

Thus, the Qur’an and the Prophetic traditions on the matter of modest dress and manners aim to reduce these indecencies and preserve peaceful marriages. Even though many examples of men and women who claim to be pious, yet engage in unlawful acts with the opposite sex, may be cited, the ideal of Islam still proves to be true. God knows that human beings are imperfect creatures and the guidelines are there to set the perfect standards one should struggle to achieve.

C. Social level: Perseverance of society

Islam does not only seek to guide the individual out of the context of her surroundings. The realities of everyday life require human beings to interact with others unceasingly, hence social matters are also addressed in the Qur’an. The modesty of an individual’s dress and manners automatically affect society at large. Indeed, the problems of sexual harassment of women and sexual assault are widespread in our societies. Trying to catch and punish the perpetrators of these offences after the harm is done does not solve the problem. Individuals should reform themselves, learn good morals and values. Only in such a way can the entire society be reformed. When and if women practice ranges of nudity, the society at large is affected negatively. For instance, harmony among married couples and the piety of individuals may deteriorate. This does not mean that only women must watch the way they act and dress, but as the Qur’anic verse 24:30 states, men are obligated to lower their gaze and adopt modest dress and manners as well.

Tell the believing men that they should restrain their gaze (from looking at the women whom it is lawful for them to marry, and from others’ private parts), and guard their private parts and chastity. This is what is purer for them. God is fully aware of all that they do. (Nur 24:30)

Men are first warned to control themselves, and then the required dress for men and women complements the decency of society. Also, to reduce the debate only to the matter of clothing is indeed wrong and misrepresentative of Islam. God is concerned with our inner selves primarily. Thus, modest dress serves its purpose only when it is appropriately complemented by the right morals and manners, and a whole Islamic way of life.

Eren Tatari is a PhD student in the Political Science Department, Indiana University, Bloomington. Her research interests include Muslims in Western politics, gender studies, and the political representation of minorities.

Notes

1. Esposito, John. The Oxford Encyclopedia of Modern Islamic World, OUP, 1995, pp. 108–111.
2. Muhammad, Sherif. “Women and their Legal Rights in Monotheistic Religions.” The Fountain, Issue 41, Jan-Mar 2003, pp. 30–44.
3. For instance, the ego falsely claims or wants to be independent. It does not like to recognize authority or feel gratitude. Hence, the challenge is to use the other faculties God has given us (such as our intellect and heart) to discipline our ego and submit our free will to God’s will. In Islam, human beings are not deemed intrinsically evil. We have the potential to be higher than angels or lower than animals. We have been given many faculties as tools to find and stay on the Straight Path.

References

• Unal, Ali. The Qur’an with Annotated Interpretation in Modern English, NJ: The Light, Inc., 2006.

The conservation of soil is also important. But as its value has not been properly appreciated until recently, soil has become seriously polluted with chemical substances which can hurt the living species in it. These poisonous chemical substances include cadmium, arsenic, chrome, and mercury at excessive levels, lead, nickel, molybdenum and fluorine at medium levels and boron, copper, manganese and zinc at low levels.

There are a number of sources of these substances which accumulate in subsoil. Tones of such substances are dispersed into the atmosphere as a result of the burning of fossil fuels, the casting of minerals and other industrial activities. Atmospheric processes cause these substances to disperse and mix with the soil first and penetrate into plants later; polluted water and soil consequently cause disastrous problems for construction, the environment, and health.

The level of borax which is available in soil, for instance, is becoming overwhelming due to the extensive use of detergents and fertilizers. Super phosphate, which is a kind of fertilizer, and limestone, which is found in soil, are generally composed of small quantities of cadmium, copper, manganese, nickel and zinc. Cadmium and chrome are utilized in producing metal coatings; cadmium is also used in battery production; and arsenic is utilized in cotton, tobacco and fruit plantations as an insect and weed killer. As products in which these substances are found have been increasingly used in recent years, these substances have been consumed by human beings in higher proportions in their daily air, water and food intakes.

Although presently a partial solution, a method of improving soil by the use of plants has recently been developed and introduced as a clean and permanent solution. Research conducted has proved that plants have important functions in cleaning chemically polluted soil, and significant scientific findings have been obtained about how plants survive in an environment replete with poisonous chemicals.

Plants: The volunteer soil cleaners

The use of plants to eliminate substances which are unfriendly to the environment or to diminish their negative effects on the environment is called “phytoremediation.” Cleaning polluted soil with techniques that necessitate engineering processes is a rather costly operation. On the other hand, certain plant species have been granted the ability to concentrate heavy metals such as zinc, cadmium and nickel, which they take up from the soil, in their stems, shoots and leaves. The parts of these plants containing the concentrations of heavy metals are collected, reduced in volume and are stored for future use.

Plants which are capable of storing metals in themselves are used for soil-cleaning purposes in the mining industry. Bio-mining is defined as obtaining minerals by way of growing plants in polluted or mineralized soils and then harvesting them as soon as they have concentrated a sufficient amount of minerals in their tissues. Plants are burned after being baled and their residual ashes are being sold as mineral ores. Zinc has been produced at a rate of 30–40 % from ashes of the plant thlaspi caerulescens which was grown in a plantation rich in zinc in Pennsylvania.

How plants are employed in soil cleaning

Lately, a number of research projects have initiated on the plant thlaspi caerulescens, which is seen as useful in terms of soil cleaning. Thlaspi is a member of the broccoli and cabbage family and it grows in soils containing high rates of zinc and cadmium. These plants develop wide root formations in soils containing heavy metals; they transfer these heavy metals via their hair-like roots first to their stems and later to other parts, and store those heavy metals in their leaves. Storers like thlaspi are a good model of the mechanism of metal-storing and even shed light onto the biological system which plays a role in this process. The biological composition of these plants has been enriched with genes so that they assume a role in increasing the solubility of heavy metals in soil, in the transfer of metals to their roots, and in producing proteins to play the intermediary in such transfers.

While a typical plant is equipped with a storage capacity of 100ppm (gr per ton) zinc and 1ppm cadmium, thlaspi is created with a storage capacity of up to 30,000 ppm of zinc and up to 1,500ppm of cadmium, without any signs of being poisoned, whereas an ordinary plant may be poisoned with a zinc level of only 1,000ppm or cadmium between 20 and 50ppm. What would it have meant for living beings which are nourished by plants, if all plants had been created with as high a storage capability for heavy metals as that of thlaspi?

It has been noted, while researching the zinc-storage mechanism of thlaspi, that certain parts of the plant have been stimulated for the purpose of transferring zinc. While in ordinary plants gene-decoding of proteins which are charged with zinc transfer is regulated according to their zinc contents, in thlaspi synthesizing of the carrier proteins continues until the zinc contents of its tissues reaches very high levels.

How radioactive cesium is cleaned

It has been found, as a result of research into soils polluted with radioactive cesium-134 and cesium-137, that the area polluted by cesium-137 is under the threat of radioactive pollution, even if the effects of pollution that it caused over the soil surface would be lessened. One of the most important reasons for this is that cesium-137 is a long-lasting radioactive isotope with a half-life of 32.2 years.

Phytoremediation is preferable to alternative cleaning methods, which cost much more due to high energy inputs. However, cesium, in the form it is found in soil, is not absorbed by most plants, and ammonium ions cause the dissolution of cesium-137 in soil.

However, amaranthus retroflexus, which is a member of the goose-foot plant family, has been found to be forty times more efficient than other plants tested in cleaning the soil of radioactive cesium. Thus, polluted lands are expected to be cleaned within fifteen years if this plant is grown and harvested two or three times annually.

A plant fed by arsenic

Arsenic is utilized in the production of agro-chemicals that are used to kill weeds and insects in the sub-soil. The fern named pteris vittata has been found to be created with the capacity to store arsenic. When this plant fern was discovered to contain two hundred times more arsenic than the surrounding soil, it was understood that it is fed by arsenic. This discovery is expected to open new horizons in cleaning the agricultural land, especially in industrial and mining areas.

How damage caused by aluminum can be decreased

Aluminum, which is one of the most abundantly available elements (among oxygen, silicon, iron, magnesium, sodium, potassium, aluminum and calcium) in the earth, is among the main components of clay in sub-soil. It does not pose a threat to plants when it has a basic or neuter pH value. However, Al+3 which is a kind of aluminum dissolvable in acidic soils, is poisonous to the extent that it threatens plant roots.

How some plant species, among which are wheat, corn and barley, can be cultivated in acidic soils in spite of high metal rates is being researched. Studies in this context are being conducted on arabidopsis thaliana (the mustard family) whose gene map is prepared and which constitutes a model. A mutated arabidopsis, for instance, has been discovered to have been equipped with the capacity to render aluminum harmless. If the genes which play their role in this process can be determined, then gene transplantation will be possible to increase the resistance of plants which are sensitive to aluminum, such as barley, and barley production will accordingly be increased.

All these facts clearly indicate that the earth is like a great and continuously working factory or a guest house continuously becoming full and empty. The pollution which is an inevitable result of the activities of living creatures is kept under control by micro organisms, plants and animals which are the mirror-bearers of Almighty God’s attribute, al-Quddus, “the All-Pure.” The relations between these living creatures and the universe have been so perfectly programmed that all of them beautifully perform their duties.

References

• Brady, N.C. The Nature and Properties of Soils, 1990, 10th Edition.
• http://www.agclassroom.org/teen/ars_pdf/9earth/2000/06phytoremedation.pdf
• Altunay, Bedirhan. “Biotechnology of the Environment,” 2006, Sizinti, No: 335, p.526–528.