Science and Pseudoscience

– Pushpa Raj Adhikary
Natural philosophy in early days was the study to find unanswered questions about nature. The equivalent of natural philosophy now is science. As the answers about the nature were found, these gradually became part of what is now called science. We, now, know that science is divided into various branches of study, namely, the study of living beings known as biology, botany, zoology, genetics, molecular biology, and physical science known as physics, chemistry, geology, meteorology and astronomy.
Biology is more complex than physics and chemistry because it involves not only matters but living matters.  But in some schools biology is taught before physics and chemistry because biology consists  mainly of classifying plants and animals. Scientifically, biology is much more complicated than physics and chemistry . But almost all the high school students consider biology far easier than the most fundamental of all sciences, the physics.
Where does mathematics fit into this picture of science? Is mathematics a branch of science? Of course, mathematics is a branch of science with its well established foundations and very powerful methods of studying mathematical objects. Mathematics can also be regarded as art because creativity of highest order can be displayed in mathematics. Mathematics is also a language of science. We want to express scientific ideas as precisely as possible and in unambiguous language. Ordinary language will not help scientists to express their ideas correctly. For example, consider the following expression,
2 / [3 + ( 5 / 3 ) x 6 – 2 + 3 ( 6 + 8 ) / 3 { 5 – 9 / 3 + 2 } x 5 ]
If you try to write down the instructions as how to simplify this expression in plain language, it will create more confusion than clarity. But for those who understand the meanings of symbols involved in the expression, it is quite clear how to simplify it. Mathematical language is very clear and offers an unambiguous way of expressing scientific ideas mainly in physics. So, sound knowledge of mathematics is required to study science.
As in ordinary language, scientific language also uses the term ‘facts’, ‘hypothesis’, ‘law’, ‘theory’, ‘concept’ and ‘prediction’. These terms often mean different in science. A fact means something absolute in ordinary language but in science facts evolve. People do understand that the meaning of hypothesis is speculation. But for a scientist, it is an educated guess about nature or model of nature that seems to explain its laws. Hypothesis and theory may  seem to mean the same in ordinary language but in science a theory is an accumulation of ideas and equations of well -tested hypothesis and laws.
A law in science describes how nature behaves. A law of nature is a statement expressing what has been seen always to happen in certain conditions. A law is a scientific principle. The principle which governs how a stone falls to the ground from the height is the law of falling bodies. Newton’s law of motion  explains the motion of bodies on earth and also the movement of celestial bodies.
A scientific theory is a reasonable or scientifically acceptable explanation for a fact or event, which may not have been proved to be true. A scientific theory consists of rules or principles, theorems, etc. belonging to the subject. For example, set theory deals with the behavior of groups of mathematical elements known as sets. A useful theory in science is able to predict how nature behaves in connection with some unknown phenomenon, or how things or events may turn out in some specific conditions.
The explanation for a fact or event made by a scientific theory is tested for its validity by experiment(s). A hypothesis explained by a scientific theory and confirmed by an experiment becomes a scientific principle or law.
Often, we speak of scientific method of learning. Scientists make discoveries by this method. The work of Galileo in the sixteenth century established the scientific method of gaining, organizing, and applying new knowledge. A scientific problem generally recognizes a problem, thereby making an educated guess or hypothesis for the cause of the problem. Then we predict the consequences of the hypothesis and perform experiments to test the validity of our predictions. Based on hypothesis, prediction, and outcomes of the experiment, we formulate a principle or a rule. But great discoveries made by scientists not always follow these rules. Often these discoveries were made by trial and error or accidental cases.
A hypothesis in science must be testable. The chance that a hypothesis can be proved wrong is also as likely as it can be proved right. A scientist accepts the wrongness of a hypothesis as easily as he/she accepts its correctness. Actually instead of asking “Am I right?” scientists want to know “Why am I not wrong?” The emphasis on finding the wrongness in all cases distinguishes science from non-science. If there isn’t a test to determine whether a hypothesis is wrong or not, it cannot be a scientific hypothesis.
Consider, for example, that the planets affect our destiny. Neither we can prove that it does,  nor  have we proof that it does not. Till we can prove or disprove it, it cannot be a scientific hypothesis. In the same way, whether there is the existence of god or whether god created this world cannot be proved or disproved. Thus, such subjects are not within the realm of science and there are no scientific answers to such questions.
Theories of science are not fixed. They undergo change. When our understanding of our surroundings or nature increases, accordingly the theories of science also become more and more perfect.  Newton’s law of gravitation helped us to understand the motion of planets, and based on this law, humankind could land on moon, but it cannot explain the formation of black holes. So, we need more perfect theory of gravitation to explain what happens in a black hole than that of Newton’s. The more we understand about nature,  the more perfect theory of science will be.
Science does not subjugate nature, but goes along with natural laws. But we know of some acts that try to subjugate or force nature to act in some strange ways, by some kind of magic or so-called supernatural powers. Even with the advancement of 21st century science, we are still unable to dispel the so-called magic which persists in societies, beginning from the primitive to modern day societies. Such ‘magic’ which does not stand to be tested for right or wrong is pseudoscience. We talk of mysticism but quite a few may even believe it  to be nothing but pseudoscience. Likewise, astrology, which is considered science by its practitioners, is also a pseudoscience. The practitioners of pseudoscience are misguiding the society. Occasionally such practitioners do get success and are able to fool people but their success is nothing but mere coincidence. We have come a long way in comprehending nature and liberating ourselves from ignorance but, still, it is not sufficient to free ourselves from performing some mystic experiments for more wealth and power, to believe in astrology and occult phenomenon. Daily newspapers hardly report on the progress of science and new discoveries, but never forget to publish a column of horoscope. So, more human effort is required to fight against this inclination for pseudoscience.

Why I Am Teaching

 – Ekku Pun

Teaching just fell into my lap and I took it up as a profession some nineteen years ago. Whether I had natural flair for it or not, whether I needed to take training for it or not, whether I could be a good or/and successful teacher never crossed my mind. So, when my colleague Hem Raj Kafle requested me to write something on teaching experience, my initial reaction (to be honest) was of total loss. My head crowded with questions like: What to write? Can I produce a piece worth reading? Do I have something inspirational or beneficial to share with a large audience?

As I started to grope for answers, I was bound to retrospect the years that had slipped without my realizing what they made me. I simply wanted to judge myself as a teacher. I had never done this before and it was a daunting task.  What I have realized after such retrospection is this: I have managed to come so far without even once thinking seriously of changing the profession; I don’t recall any noteworthy complaint from the students and my administrators about my teaching (If any which I am unaware of, then let me continue to be in bliss of ignorance!); so, I can regard myself as a fairly successful teacher.

I am not an exceptional teacher to stand out in the teaching community, exceptional in the sense that some students would pick me up as the type ‘who changed my life’. I go about my job quietly. I perform my responsibilities as sincerely as possible. I believe in simplicity, so I try to keep things plain and accessible. Common and basic values of punctuality, regularity, honesty figure in my conduct of class and treatment for students.

However, now at least two episodes keep flashing across my mind like films clips. The first concerns the beginning stage of my career. It was during the lunch-break in a conference. I was with some of my old classmates and professors. We were zealously narrating our experiences of being teachers, pointing out our students’ general apathy towards studies and their failure to meet our expectations. Hearing our ‘hue and cry,’ one of our gurus remarked, “Fresh out of the university, filled with all the isms of great philosophers and scholars, you young lot are too idealistic. Do not expect things to come perfect as in the books. There is a vast gap between the world of books, university classrooms and the real world outside.” I was a little taken aback to hear this. I thought: “Is it wrong to expect perfection, expect the students to do exactly what I want them to, and how I want them to? I know whatever I am imparting to them is right and useful to be competent and successful in life. I do so because I have only the best interest for them in my heart.”

The second episode relates a student. I came to know about this through a colleague during a gossip about our past students. At one point he casually told me that ‘this student’ had said I was little too unfair with him. He had said I used to pick on him even for a small mistake all the time; I had sent him out or humiliated him by making him stand in the class throughout the period, etc. etc. It made me uncomfortable. I kept quiet in acceptance of what the student had complained. I wished I had known this while I was still teaching him.

These episodes, I accept even now, led to the change in my approach and attitude towards teaching and dealing with students as my journey progressed. Growing up under the strong influence of a strict and disciplinarian soldier father, I sometimes tend to show streak of sternness and demand discipline from students. This is what I realize now, but take these qualities as the gifts from a parent. I may have demanded discipline and perfection in my pupils, but, I am sure, these qualities are prerequisites for addressing the demands of genuine learners.

Furthermore, these two episodes have made me realize these: first, to be idealist and to seek perfection is desirable but not practical. One has to firmly plant the feet in reality and accept it, desirable or not. If the effort you put in to make the reality desirable yields otherwise results, the effort is more meaningful. What we read and find in the books are the products of  the best minds. They are developed in supposition of ideal conditions where all the pieces fit with one another in harmony.

Second, as a teacher, your aim has to be to motivate students towards finding their own voice, their potentiality for creativity and self-exploration. By this, they will find what they are good at and will feel good about themselves. They will realize their worth, which will provide a solid foundation for their growth and success in life. To achieve this goal the teacher has to less emphasize on rules, discipline (mind you not to forget them altogether). And, sometimes you should reasonably bend the rules if it helps. You should allow them to feel free to be themselves to work constructively. They need to feel respected for their effort and contribution. Then the instructions, textual knowledge, and good results will follow suit.

I do not know how far I am successful in implementing what I have realized. We all know preaching is easy compared to practicing what one preaches. I love to remain ignorant about how much impact I have made in this profession. I just want to value being able to help young people grow, and continue the profession with the best of my sensibility and diligence.

[Courtesy:  Nelta Choutari]

 

 

 

Perspectives of Mathematics

Kanhaiya Jha
Distinguished scientist and former Indian president Dr. A.P.J. Abdul Kalam summarizes the significance of science to the mankind thus: “Science, more science and still more science is needed to lay the foundations for the development and growth of an individual, a society, a nation and world.” Science has made invaluable contributions in the progress of different civilizations of the world. Math-e-matics has been defined as the science of numbers and the structure and measurement of shapes, including algebra, geometry and arithmetic. It is Ganita which means the science of calculation. Mathematics is a vast system of organized thinking of an analytic and synthetic nature developed since the golden ages of Greece and the earlier Babylonian civilization. Mathematics in ancient India was one of the most advanced and practical sciences amongst all the early civilizations of the world. Ancient Indian mathematicians were popular because they had a clear concept of numerical quantities with nine digits and a zero. Indian mathematicians have always given remarkable contributions to the world mathematics. The great Indian mathematicians like Aryabhatta (5th century AD), Bhaskara (12th century AD), Brahmagupta and Chinese mathematicians like Sun-Tsu, Lin Hui, Wang H’siao-T’ung, Ch’in Chiu-Shao made various discoveries, which were unknown to the rest of the world, during the same period. There are evidences of some connection between Greek mathematics and Indian mathematics and of an intimate connection between Indian mathematics and Chinese mathematics. Nepalese mathematicians like Gopal Pande, Nay Raj Pant have also made some contributions in the history of Nepalese mathematics. 
Mathematics, as an expression of human mind, reflects the active will, the contemplative reason and desire for aesthetic perfection. Its basic elements are logic and intuition, analysis and construction, generally and individually. The term “mathematics (maths)” has been interpreted and explained in various ways. It is the facts and relationships between them. It explains that this science is a bi-product of our empirical knowledge. That is why famous mathematician Karl Friedrich Gauss (1777-1855) defined maths as the “Queen of Science”. Much of the same sentiment is expressed in an ancient Sanskrit verses: 
“Yatha Sikha Mayuranaam, Naganam Manayo Yatha/
Thatha Vedanga Shastranam, Ganitham Murdhani Sthitham //”
This means: “Like the combs of the peacocks, and the crest jewels of the serpents, the love of jyotisa (Ganita or computation) stands as the head of all the loves forming the auxiliaries of the Vedas.”
Almost all results in maths are developed through the process of reasoning (inductive as well as deductive). Now, some familiarity with maths has been regarded as an indispensable part of the intellectual equipment of every cultured person. Regarding the role of maths, famous English biologist Charles Darwin (1809-1882) wrote: “Every new body of discovery is mathematical in form, because there is no other guidance we can have.”
Mathematics as a whole can be divided into three main branches, each of which has its own history: (i) geometry, astronomy and chronology; (ii) algebra and (iii) analysis. Clearly, it is found that these three branches often overlap. Also, modern maths has been classified into pure and applied mathematics. Pure maths deals with the fundamental concepts and is abstract in nature. Applied maths is the application of continuous forms of maths (calculus) as an insight into or solution for “real word” problems. Applied maths reflects the belief that basic order and harmony exist in the physical words, which may be described by the logical structures of maths. Famous mathematician P.R Halmous has said: “Applied maths cannot get along without pure, as an anteater cannot get along without ants, but not necessarily the reverse.” Whenever we try to compare maths with the other branches of science, then due to its exactness, maths always dominates the other sciences. Since each experiment or research work carries some sorts of calculations, other branches cannot be independent of maths. Till the present day, maths has helped to develop different fields. In order to solve a real life problem, we need the interaction between physical, mathematical & life sciences in a meaningful way. Life sciences present many challenging problems for physical and mathematical sciences. In connection with physical sciences, maths has been used in physics, chemistry, biology and engineering; and in connection with social sciences, it has been used in economics, statistics, psychology, logic and fine arts in many forms.
A mathematical system is an abstract deductive theory that can be applied in other mathematical situations when the axioms can be verified. The success of application in other fields of knowledge depends on how well the mathematical system describes the situation at hand. Also the power of maths rests on the discovery that it was possible to represent abstract concepts such as those of numbers and shape by means of concrete symbols; and through the physical arrangement of these symbols with respect to each other to express relations between these concepts. Thus, permissible rules for the changing of the arrangement of the symbols reflected permissible steps in expressing logical relations between the original concepts.
Everywhere in the world, maths is considered to be a difficult subject. If we search the Internet using the keyword ‘hate’, mathematics is likely to be the term most associated with the term. Now maths is one of the subjects you cannot simply ignore. As Glenn Mason-Richeborough pointed out, “Maths is important from the view of the individual as well as of the society.” Maths is the most objective among all the sciences, yet the act of realizing maths in our world creates subjectivity. We all respond differently while learning it. These facts reveal that the real fault lies not in maths but in the way the subject is taught. Both teaching and learning maths have been greatly influenced by the recent development in Information Technology. But the ancient mathematical approaches provide us the best techniques in our understanding of maths. That’s why school students in many developed countries are still afraid of solving decimal problems with hands. In maths interest is relatively difficult to sustain in comparison to other subjects. A problem may be solved in a number of ways. Once the students understand the fundamentals, the actual solving becomes a simple task. And once students start getting answers right, confidence builds up and mathematics becomes more of fun. Certainly everybody cannot learn maths except only a meager part of it. Unless one is endowed with certain qualities, one cannot learn maths. The qualities are (i) Mental alertness (ii) Venturesomeness (iii) Tenacity and (iv) Diligence.
 …..
[To be continued in the upcoming issue]

Reading for Assimilation

Hem Raj Kafle
I have been teaching “Four Levels of Interacting with a Text” (Literal Comprehension, Interpretation, Critical Thinking and Assimilation) for ten years. It is a part of the course in English communication skills for Kathmandu University’s science and engineering freshmen. We English teachers sometimes share what each of us has been teaching in addition to following the guidelines from Adventures in English (now replaced by Flax-golden Tales). We make passing remarks about such cases that students copy readymade ‘levels’ from guide books, or mistake one level for another, or write the same thing for all levels.
I have tried hard from the beginning to give my freshmen the correct sense of the aspects of reading and writing about a text. The success still is scanty regarding student presentations during the in- and end-semester exams. The one reason, which all of us may readily accept, is that teaching of these skills starts long before students have learned to own texts and got sense of the value of serious reading. In my opinion, one who hasn’t learned to read with purpose and passion hasn’t learned to own a text, or vice versa.
With this conviction as a guiding principle, from last year I decided to modify my earlier approach which was to make students read guidelines from the text, see the editors’ sample on “Yudhisthira’s Wisdom,” lecture on the texts, and ask students to produce their versions. The modification involves four important components. First, I assign students to ask questions in emails on any of the four levels, and answer them with examples and explanations. These emails are forwarded to all the class members so that everyone gets my version of the reading/writing. I also make a point that my version need not be final and that they can still work on it. Second, I familiarize students with diverse kinds of short texts and check their level of comprehension in each, especially the level of internalization, skills in summarizing or retelling, and critiquing.
Third, I tell them real stories of how people own texts and reading. This occasionally draws my own passions and prejudices for certain writers, books, texts including those in the syllabus. I emphasize that personalization of texts and reading culminates in better understanding and critical thinking. Fourth, I ask students to create a complete “text profile” of the texts,  which they are required to put in their journals. The profile contains all the fundamental elements of a text:  title, author, genre, setting, tone, main themes/arguments, main characters, main events/actions/scenes, important paragraphs/lines, important excerpts, and a brief summary. A complete profile functions as a rich resource for writing the four levels.
I hope my reading classes now fare better than two years ago. I have kept myself alert to check the outcomes.
Of the Four Levels, I find assimilation the most pertinent and interesting. To me assimilation means personalization of reading. But how does one personalize it? How do you know someone has done this? So, in the past, I always looked for samples of assimilation so that I would understand it myself and teach students more substantially. I did not realize my own experiences with certain books could prove a sample. I might be waiting for a chance or a coincidence or an exposure to realize this. And I did not get it until June 2008.
Early in the morning on June 28, I joined a queue in front of the counter of Northwest Airlines at Suvarnabhumi Airport, Bangkok. It was my first transit point towards Japan on my way to University of Florida, Gainesville, USA. I was nervously waiting for the agent’s queries and boarding passes when I noticed a book in the hand of a white man standing in front of me.  It was not unusual to find a European or an American with a book in an airport. But what really caught my eyes was the title: Lies My Teacher Told Me. I thought it was some sort of memoir of someone who grew up to know that one of his teachers had told certain lies. It was no time and place to talk about books, standing in a fast moving queue, and right before the book-owner reached the agent and started his business. He got his work done in a few minutes and hastened away tugging a large suitcase. I caught last glimpse of the book and presented myself to the agent for my transit clearance.
I forgot the book for about a fortnight. On July 13, we were taken to a book store, (Books and Books) in Corel Gables, Miami. I vainly searched for some serious books on diaspora or communication, whereas some of  my companions got hold of a couple or more of different stuffs.  I was going to look either a miser or a philistine without a purchase. But I suddenly remembered the book and inquired the manager if they had it handy.  He was not sure but promised to check. And he had a last copy. I did not check the price. Enthralled by this find, I picked up half a dozen other curious titles just before our director beckoned us for leaving the store. In addition to Lies, at least two of the other books happened to be great: The Book that Changed My Life and The Bitch in the House.
Lies… by James W. Loewen turned out to be a different work from what I had imagined it to be. It was the rewriting of some of the major facets/facts of American history which, according to the writer, were distorted in history textbooks. This revelation sufficed to keep me glued to the book almost all the night. But, I read the preface and jumped to the most familiar title “The Land of Opportunity” (Chapter 7). The following quote at the beginning of this chapter made my further reading meaningful:
Ten men in our country could buy the whole world and ten million can’t buy enough to eat.  [Will Rogers, 1931]
I began to see America differently from the following day despite my awareness that looking at it in the light of the 1931 statement would be anachronistic. At one point the director asked me of my impression of Miami. I said, with my eyes on a beggar to the other side of the street, “Looks much like an Indian city.” She did not ask any other question, nor demanded explication for my terse analogy. I knew she did not like it at all. The sight of the beggar had induced me to allude to Will Rogers’s ten million.
Later, I marked the presence of the “homeless” in the streets of New York and Washington DC, and willingly gave one dollar bill to whoever accosted me for it. Some friends teased me for this appearance of generosity. I explained, “It’s their money and their people. And it is big for a Nepali chap to be giving a buck each to some of Uncle Sam’s poor nephews in Washington DC.”
The Book that Changed My Life has stories of seventy one “remarkable” writers, who “celebrate the books that matter most to them.” The book presents intimate accounts of how reading helped these writers find directions in life. Sounds curious, right? I love this book so much. The Bitch in the House can prove yet another milestone for a reader to see American society in a new way, especially in the light of how contemporary feminist writers define their roles as lovers, wives and professionals in the changing times. 
These stories may suffice to create some awareness in my students that books help us redefine our view of the world and its people. And there lies the value of personalizing books, making them a part of our lives.

[Courtesy: Yatree’s Ruminations]

To All Teachers

Editorial
To many, teaching appears complacent job – complacent because a teacher does not necessarily seem to fall headlong into destructive vicissitudes. Because is teacher, working with mind and heart, skips being visible like society militant muscle users. Positively, this still because teaching is accepted as fundamental to social progress and their teacher principal agents for augmenting and sustaining progress. And in reality teachers manage to live leisurely and contented life despite hours/years of hard work while at world around the falls into upheavals. But, are lives without challenges behind this veil of complacence?
Teaching involves the need to sustain productive challenge, the challenge to constantly update and updated. It challenge to exist as long as the urge for learning exists. It equally to supply the society with progressive, inquisitive work force, who would work towards brighter future from among the present pessimistic crowd. We in KU feel this urge even more; we feel at responsibilities as pressing the achievements relatively more distant. But we closely watch our hard work being rewarded with the successes of our students. We believe that persistence proves, these main motivation for students. We work to keep values intact, while upgrading ourselves and consolidating our goals at time many things are falling out of place in country.
We would like dedicate KUFIT the teachers who share the motivation to sustain the challenges for building better tomorrow. This issue contains reflections on pertinent social topics, teachers’ intimate narratives, and cases from Nepali history. Finally, as arrive then second issue of KUFIT, we feel strong urge ask colleagues and readers visit the site, read the articles, initiate discussions and plan for contributions in months.

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Effects of Gasoline Adulteration

Bibek Baral
Performance and emissions of internal combustion engines are sensitive to the fuel used as they are designed to run on fuels with certain specifications. When an engine is run on a fuel with altered specifications, the performance and emissions of the engine may deteriorate and the durability and reliability of the engine components may be affected. Fuel adulteration is often a surreptitious operation in which a higher priced fuel, such as gasoline, is mixed with other cheaply available hydrocarbon fuels or solvents. This changes the composition and physical properties of the base fuel, and use of such fuels often results in reduced drivability of vehicles and increased tailpipe emissions. This problem is pervasive throughout South Asia and has also been reported in Greece, Brazil and African countries.
The basic reason for fuel adulteration is the financial benefit obtained from differential taxes imposed on different fuels. In many developing countries including Nepal gasoline is more expensive than diesel and kerosene because gasoline is taxed while diesel and kerosene are subsidised. Kerosene is used by moderate to low income people for cooking and lighting purposes and so, after subsidy, it is significantly cheaper compared with gasoline. The price difference between these two fuels is the main reason behind one of the most common forms of fuel adulteration, i.e. blending kerosene with gasoline. The other factor for this type of adulteration is the easy availability. Other types of gasoline adulteration prevalent in Nepal include mixing of gasoline with gasoline boiling range industrial solvents such as toluene, xylene and other aromatics, or light hydrocarbons such as pentanes and hexanes (rubber solution) which carry insignificant tax. Diesel adulteration, which includes mixture of kerosene and used lubricants with diesel is also equally ubiquitous. However, gasoline-kerosene adulteration would be more harmful in terms of emissions and damage caused to the spark ignition (SI) engines than the diesel adulteration would do to compression ignition (CI) engines and its emissions. Fuel adulteration is usually done by the operators of ‘for hire’ vehicles who do not own the vehicles, and, according to media reports, also by some of the public distribution system operators, and the fuel transporters.
Blending kerosene with gasoline will primarily result in a fuel with heavier hydrocarbon components contributed by the kerosene and thus a fuel with reduced volatility. It particularly elevates the middle and final evaporation temperatures by the introduction of heavier hydrocarbons in the kerosene. On the other hand, mixing small amounts of hydrocarbon solvents such as toluene and xylene with gasoline would not significantly affect the evaporation characteristics of the gasoline, because of the fact that they have boiling points in the range similar to gasoline components and some even occur in gasoline itself. However, these solvents do spike the fuel with an excessive amount of certain types of hydrocarbons. Both of these factors, i.e., change in gasoline volatility as well as the increase in certain class of hydrocarbon component, especially aromatic hydrocarbon, play key roles in the emission of spark ignition (SI) engines (gasoline type engines). It has been established from various studies that increase in molecular weight of the fuel, and hence decrease in volatility of the fuel, increases total hydrocarbons (THC), and particulate matter (PM) emissions from spark-ignition engines. Besides, increases in certain classes of hydrocarbon in the fuel have been found to be associated with an increase in THC and PM emissions as well as polycyclic aromatic hydrocarbons (PAH). These emissions, as shown by epidemiological studies, pose serious risk to public health and the environment. Some hydrocarbons, especially PAH, particularly are known carcinogens. Results from a series of experimental studies conducted by the author concluded that an adulterated blend containing 20% of kerosene produces 2 to 3 folds more THC, PM and PAH emission. The results are really alarming and if immediate action is not taken against the clandestine fuel adulteration operation, the general public will be exposed to a lot higher levels of such harmful pollutants. Situation is getting even worse by ever increasing number of vehicles in Kathmandu Valley and gasoline paucity which is promoting increased tendency of its adulteration by kerosene.
In addition to the emissions, the gasoline adulterated with kerosene would make the fuel more susceptible to knock, an abnormal combustion phenomenon in spark ignition engines. When knock is severe and persistent, it may damage the engine components including piston rings and lands, cylinder head gasket, and piston crown. Experimental studies showed that at certain engine condition when the engine fuelled with gasoline operates without knocking, a 10 percent kerosene blend would cause more than fifty percent of engine cycles knocking, and a 20 percent kerosene blend would cause almost all of the engine cycles knocking. Also at certain engine operating condition, the knock intensity resulting from 20 percent blend is more than 5 times greater than 10 percent kerosene blend whereas with 100 percent gasoline the knock intensity is zero. This indicates that prolonged running with adulterated fuel will seriously damage the engines.
The consequences of fuel adulteration range from environmental to economic. The increased emissions resulting from the use of the adulterated fuel has a direct environmental consequence. However, there may be indirect consequences as well. Kerosene, which is the basic fuel for cooking and lighting intended for lower income people, is misused in the transport sector, thus depriving those people of their daily cooking and lighting fuel. This may compel people to use inefficient biomass stoves as an alternative causing higher level indoor pollution. The economic consequence of fuel adulteration is the loss in tax due to the large scale channelling of subsidised kerosene to the transport sector. As adulterated fuel may affect the durability of engine components, for example, due to knock, prompting the engine components to be replaced earlier than their usual operating life, this is also an economic loss.
To conclude, adulterated gasoline which has adverse consequences on environment and economy has to be limited by any means. For this, the government agencies including the Ministry of Supplies, the state-owned Nepal Oil Corporation and Nepal Bureau of Standards should consider the matter more seriously and come up with proper strategy to deal with the furtive fuel adulteration practices. The consumers should also be careful and choose more reliable fuel supplier. After all, it comes to their own well-being. 

Science and Superstition: Reflections on Astrology

Pushpa Raj Adhikary
One area where science and superstition clash and confuse is astrology.  The clash and confusion stem from a popular misconception that astrology is the same scientific field as astronomy. In this article I will try to shed lights on the different facets of this misconception. 
In fact, the same ancient people, who made sense of the worldly things, also observed the sky, calculated the positions of prominent stars and planets and other heavenly bodies with respect to the earth and acquired the knowledge, which could predict the occurrences of solar and linear eclipses. Thus emerged the knowledge of astrology which mainly dealt with predicting the impacts of the positions of the sun, moon, planets, and stars on the events which occur on earth and the future lives of living beings.
Do the position of stars and planets in the sky, at the time of birth of a child affect the future of the child’s life and career? Astrology says it does. But how? The systematic and formulated knowledge accumulated so far does not have a rational reason to correlate a position of a certain planet or a star with that of life and career of any person. If so, then why and how does this strange belief of correlating the stars and planets with our future exist in our society? This belief persists in our society because of the curiosity of human beings to know whether some natural phenomenon brings about the well-being of particular person or persons. The astrologers come with their explanation to convince us that the position of a planet or the position of the sun in a particular constellation (rashi) at the time of their birth does affect the destiny of the new born. As a proof of their claim they asked: if astrology is not true or not a science, how can an astrologer predict the phenomenon of eclipse?
Of course, people wanted to know and also record the time of the birth of their children. Without a clock or the calendar how would people do it? The most obvious way of doing this was to record the time with respect to the position of the sun in a particular group of stars, which we call rashi, or the position of a planet, or a star. We have these positions recorded in a paper called the ‘horoscope’ or kundali. An astrologer reads time recorded in kundali and predicts the future of a person. Now a days, with such a large population on earth, it is most likely that several persons may be born at a particular time of the day. But do you have any record of such persons born at a particular time having identical habits, attitudes, or career? During the time of the election two different astrologers predict different outcomes for the same candidate. Is this not the proof that an astrologer’s prediction is a wild guess but not the outcome based on rational thinking?
Let us now briefly discuss about the subject called astronomy. Astronomers also observe the sky, record the position of planets and stars. They not only record the positions of the planets and stars, but also try to understand how stars and planets move in the sky, why they look different at different times of the year. Astronomers also study why stars are different from the planets, why stars are hot, how stars are formed, how long the stars survive, and most importantly, where all of these stars, planets, comets and other bodies in the sky come from. Does any book on astrology explain or answer any of these questions? Astronomy is a science and it keeps growing once we understand more and more of nature’s secret. But do you have the similar expansion of knowledge in astrology except something about the position of planets and stars and their impact on human beings? A branch of knowledge which does not improve continuously but becomes more and more perfect, and above all, satisfies the intellectual quest of human beings is not a science and is also irrelevant to us. And astrology is one of such branches of knowledge whereas astronomy, since its beginning to the present time, is equally interesting, challenging and requires greatest intellectual power of human beings to understand the material bodies and their interactions resulting in the form of natural phenomena.  
Our ancestors who studied sky and tried to understand the planet, stars, and their motion in sky did not necessarily do so to link their knowledge in predicting the future of human beings on earth. They studied the sky as part of human curiosity to understand about their surroundings and satisfy the intellectual quest. But somehow this knowledge, instead of growing as a science has grown to a pseudo-science misleading the society. These days astrologers not only tell you about your future but they predict whether you go abroad or not. Astrologers have even started to make a horoscope of a country. Would we, as rationale beings of a new millennium, like to be the citizens of a country whose fate is decided by astrologers?
Astrologers try to influence us in almost all of our activities including the area of our economy by predicting the rise and fall of stock market. They have even fooled politicians by making them more prone to astrological consultations. But how often do the predictions of astrologers come true? Have you had any record of how many predictions of astrologers have come true? The belief in astrology is thus based on a motive for a quick gain without any hard work. In fact, we should start taking astrologers to task for making false predictions which would affect the life of many.
It is true that science does not have answers to the many unknown phenomena in our lives. The efforts of scientists are directed to understanding the reasons for observing the objects around us  which are not explained through the existing knowledge. But astrologers may have answers to many questions which science does not have because they would not need reasons and logic to answer these questions. They put blame on some unknown planet or star and try to convince us this particular star or planet has determined our action or future. If you are a rationale human being you would not believe anything of it and discard this as total nonsense and regard astrology not as a science but superstition.

Reflective Journaling: An Autoethnographic Experience

Kashiraj Pandey
Reflective writing, or what I rather call journaling, empowers us to creatively and expressively portray who we are and what we experience. By challenging ourselves to be honest and to put our voices on paper, we cannot help but disrupt old patterns and beliefs. Anybody who may be present or absent in any given context is creative and it is all about whether or not we document our creativity that comes as a product of the interaction with the world around us which readily boosts confidence and cross cultural understanding for our overall transformation.
To me writing works as craft while not worrying on the meaning as we prefer to leave readers to make their own meanings that anyway keep changing according to social-temporal contexts. As response to our regular teaching learning activities, the teachers of English at the Department of Languages and Mass Communication are regularizing the practice of journaling with students since 2005. As a teacher and also the reflective practitioner, I always step into each classroom once a week, divide students into groups, facilitate the class while students in turn discuss the subject matter. With my frequent moderation and facilitation, I could see that more learning is taking place than just my teaching. According to the individual understanding, all students reflect through writing in journal, the outcome.
Maintaining a journal has helped us realize creativity as a plant growing in newer and more beautiful interweave every day making ourselves fresh and new. Thinking many might fail to do so not getting conducive environment, we encourage the students to explore their creativity that was seen in different levels in and outside the classroom. Based in our experience at Kathmandu University, as we start the semester with a set of instructions about using journals in the classroom, as Young (1999) suggests “that journals are valuable not just busy work, they are used daily as students and teacher build the knowledge of course” (p. 18), I like to propose some steps as guidelines in the beginning of each semester-group students. 

First, to ask students buy a No. 3 Register. Secondly, to make them clear on the language of the journal, in our case it should be English as mentioned in the prescribed text book, “unless told otherwise, in this class we shall use only English, even in conversations among students before, during, and after class” (Lohani & Nissani, 2008, p. 9 ). Thirdly, to monitor, facilitate, collect, and read the journal on a regular basis. Then, encouraging them to write about a wide variety of topics of their choice as free writing with a theme that has link to the text discussed in the class, we can ask students to leave a blank space between entries for room to comment later. This process holds significant place in learning through creating individual stories and poems when all the students write something during and after the class time. Finally, we can look for ways to share the journals between and among students. To ensure that the students understood the connection between the theory in the lectures (and readings), and the practice in real life; we do practice reflective journal writing in the classroom among assigning a series of questions each week to help students make connections between the lecture and the textbooks, and what learning really meant to them. Done honestly, writing neatens what affects us and who really we are. When the students are able to develop friendship with literary texts and make these texts part of their life and develop enthusiasm to decipher more and more texts from the works of imagination, their communication strength empowers and there meets the objectives of learning in the courses on technical communication for students of Media Studies, Science, and Engineering. As students start to find meaning in the texts in relation to their lives, it strengthens their reading habit, “in order to develop as a writer, one must be a reader” (Colonna & Gilbert, 2006, p. v), therefore helps them in vocabulary expansion, communication, production, presentation, and in overall level of understanding linking with background concept for writing, the reflective practice of journaling.

Even before one actually sits and writes, the most important thing I remember is that it makes us read and read, explore new worlds, new minds, and new avenues. In our case, English as language is used most effectively at its idiomatic best in literary texts as to enhance the students’ competence in creativity thus leading to their overall transformation most effectively. A good introduction to literature can compensate for the deficiencies of linguistic approach in the area of grammar, vocabulary and syntax that can enhance the students’ competence in creativity. Writing provides the students abundant practice with examples of the subtle and complex uses of grammar and vocabulary of a language. We all perform pretty well and in almost the same way in our subject matter, more specifically in the particular area of Science and Engineering, but what makes us different is our better skills in communication, may it be verbal or non-verbal, thereby we hunt the job, and lead the market.

Hiemstra (2001) puts “Journaling in its various forms is a means for recording personal thoughts, daily experiences, and evolving insights” (p. 20). In this regard, honoring the past in our own words with our own uncensored reflections, we document our memories before they are lost. This reflective process often evokes conversations with self and a real or even an imagined other person making the practitioners able to review or reread the earlier reflections with a progressive clarification of possible insights. Even with the sufficient use and attempts by the educators to encourage personal reflection in various ways, journaling still remains underused as a teaching or learning tool. My continuous effort to bolster creativity from the students’ side where the teacher merely facilitates or just positively motivates students to think with different thoughts to explore and explore has brought more creative writers from various disciplines who are more interdisciplinary in fact.
In the past thirty years friendship with Literature, and during my seven year journey at the Kathmandu University, discussing literary texts every semester, I along with my students have reached in such a state that I hardly find difference between myself (ourselves) and the authors. In the process of producing reflective understanding, I saw how the classroom became interactive time and again as the teaching and learning activity happened at the same time and product was seen in the form of individual journaling. Instead of one way, the learning happens in multiple levels, a differently depicted world produced by multiple discourses not only to deconstruct the accepted social categories, but also in believing multiple truths where our personal stories are set in cultural contexts.
As part of my own reflective journaling and along with the students, I have also created many stories, poems, and essays. While comparing to the first day of this teachering career, as I reflect I feel different now. I am different in the sense that because of reflection and assimilation, I have come to realize many defaults in my way of teaching, dealing, and evaluating the students that led me to make changes accordingly. I have gained confidence in making presentations in more effective ways. I have become more tolerant and respectful to the self and “other” cultural/ ideological differences. Moreover, this autoethnographic mode of inquiry led me to realize and reflect so much that my suppressed agonies, confusions, regrets, contempt, timidity, all got a platform to flourish into humility. Journaling, the product of reflective thinking has helped the students and me to improve our language skills once we passed through all (given) rigorous activities. Accordingly, I believe there are a number of potential benefits for learners in maintaining journal in a writing class. For example, students achieve enhanced intellectual growth and development especially as they gain more experience with the writing based on their lived experiences.
References
Colonna, M. & Gilbert, J. (2006). Reason to write. London: Oxford.
Hiemstra, R. (2001). Uses and benefits of journal writing. In L. M. English & M. A.

Gillen, (Eds.), Promoting journal writing in adult education (New Directions for Adult and Continuing Education, No. 90, pp. 19-26). San Francisco: Jossey-Bass.

Lohani, S. & Nissani, M. (Eds.). (2008). Flax golden tales. Kathmandu: Ekta.
Young, A. (1999). Teaching writing across the curriculum (3rd ed.). NJ: Prentice Hall.
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