The working of a deductive theory in science. Image from Physics for the Inquiring Mind by Eric Rogers. Though many philosophers of science would disagree with this view, one can surely start with this.
Month: January 2013
I will not allow them to chill me
“We want to show the world that we are innovators. We want to show the world that cloud storage has a right to exist. And, of course, when you launch something like this, you can expect some controversy. The content industry is going to react really emotionally about this. The US government will probably try and destroy the new business … you’ve got to stand up against that, and fight that, and I’m doing that … I will not allow them to chill me.”
via Kim Dotcom | guardian
Aaron Was a Criminal and So Are You
Make no mistake, Aaron was a criminal and, despite popular belief, there was no prosecutorial overreach. The US Attorney who oversaw his prosecution described her office’s actions as “appropriate” and, according to the law, she was telling the truth. The job of prosecutors is to bully and intimidate suspects, using the threat of some of the world’s harshest sentencing laws into plea bargaining for a shorter sentence in exchange for an admission of guilt. This is American “justice;” our current system of severe sentencing and mandatory minimums gives prosecutors overwhelming power – power that was once in the hands of judges and juries – to the point that today less than 5% of criminal cases are resolved by a jury (3% in federal cases).
via Common Dreams.
RIP Aaron Swartz.
Sharing knowledge and learning collaboratively at schools
(This article was written for a college magazine.)
We have a vision for a better society in which the values of sharing and collaborating knowledge and technical know-how form an integral part. There are two aspects to this issue. One is why it should be done, and given the current social structure how it can be done. Though the why question is as important as the how one in this article we will try to focus more on how it can be done with aid of proper technology and what are the possible implications of this intervention to the citizens of the future.
The current education system does little to promote and impart the ideas of sharing knowledge with peers to the students who will be the future citizens. In our educational system it is more like each-one-for-oneself; if you help your peers you will be at a loss in the future. Another aspect is that the educational system by its nature is consumerist. By consumerist we mean that the schools system treat the students more like consumers, who are then passively fed in what has already been produced by others. There is no or little scope left for students to produce or construct anything meaningful. So the platform/technology which will address these issues should have the following qualities:
- It should be based on principles of Free Software (see http://gnu.org/education).
- It should allow for collaboration / sharing of knowledge.
- It should allow for active, meaningful and collaborative production / construction contexts, through which students will learn.
- It should give immediate feedback to the student, not the delayed one (year end) which the current school system has. This is essential as it makes children reflective about the work that they are doing.
Learning in the context of constructing some tangible thing is a philosophy of education proposed by Seymour Papert, called constructionism. Constructionist learning is inspired by the constructivist theory that individual learners construct mental models to understand the world around them. However, constructionism holds that learning can happen most effectively when people are also active in making tangible objects in the real world. A closely related term that you might have heard is that of constructivism, but there are differences though.
The potential for transforming classrooms in a revolutionary way is present in the constructionist way of learning, which the existing CBTs (computer based tutorials) do not challenge but reinforce. The advances in technology have made it possible now to implement constructionist ways of learning to masses. So where are the examples of this?
The Sugar learning platform is just one such example which is specifically developed keeping in mind the above considerations. But the idea of constructionist learning is not limited only to using computers. displayed. The very idea of the platform is centered around the idea of constructionism. Though initially developed for OLPC (One Laptop Per Child) Project, now it can run on almost all computers. Learning in an environment where sharing knowledge is an inherent principle rather than an added externality provides the students with a whole new way of learning. Each activity on Sugar is designed keeping in mind the collaborative, construction context and immediate feedback principles.
The Sugar platform provides construction contexts from different areas to learn collaboratively like language, mathematics, science, drawing, music, games, programming, photography, audio and video recording among other things. For each of this activity can be done collaboratively by the students and can be shared with others. This also provides students to make meaningful connections between different concepts. In this context we have seen a strong urge in the children to share the knowledge and activities that they have with others, but in the current school system there is no or little provision for this. Sharing of activities provides context for feedback from peers, which in turn is fruitful in improving learning. Thus we see that the tools and time is ripe for changing our perspective towards education for a more inclusive and better society, whose core values are sharing of knowledge and collaboration.
There are pilot projects of Sugar running at many places across India, one is the Khairat Project which is running successfully for past 4 years at a primary tribal school of first generation learners near Mumbai, another one is at Merces School near Panaji in state of Goa.
Public decency and morality
This is what Supreme Court of India had to say when petition was filed to lift a ban in 1964 on Lady Chatterley’s Lover by D.H. Lawrence:
It is convenient to set out s. 292 of the Indian Penal Code at this stage:
“292. Sale of obscene books etc. : Whoever- (a) sells, lets to hire, distributes, publicly exhibits or in any manner puts into circulation, or for purposes of sale, hire, distribution, public exhibition or circulation, makes, produces or has in his possession any obscene book, pamphlet, paper, drawing, painting, representation or figure or any other obscene object whatsoever, or
(b) imports, exports or conveys any obscene object for any of the purposes aforesaid, or knowing or having reason to believe that such object will be sold, let to hire, distributed or publicly exhibited or in any manner put into circulation, or
(c) takes part in or receives profits from any business in the course of which he knows or has reason to believe that any such obscene objects are, for any of the purposes aforesaid, made, produced, purchased, kept, imported, exported, conveyed, publicly exhibited or in any manner put into circulation, or
(d) advertises or makes known by any means whatsoever that any person is engaged or is ready to engage in any act which is an offence under this section, or that any such obscene object can be procured from or through any person, or
(e) offers or attempts to do any act which is an offence -under this section,
19(1) All citizens shall have the right-
(a) to freedom of speech and expression; (2) Nothing -in sub-clause (a) of clause (1) shall affect the operation of any existing law, or prevent the State from making any law, in so far as such law imposes reasonable restrictions on the exercise of the right conferred by the said sub-clause in the interests of public order, decency or morality”
No doubt this article guarantees complete freedom of speech and expression but it also makes an exception in favour of existing laws which impose restrictions on the exercise of the right in the interests of public decency or morality.
Condemnation of obscenity depends as much upon the mores of the people as upon the individual. It is always a question of degree or as the lawyers are accustomed to say, of where the line is to be drawn. It is, however, clear that obscenity by itself has extremely “poor value in the-propagation of ideas, opinions and informations of public interest or profit.” When there is propagation of ideas, opinions and informations of public interest or profit, the approach to the problem may become different because then the interest of society may tilt the scales in favour of free speech and expression. It is thus that books on medical science with intimate illustrations and photographs, though in a sense immodest, are not considered to be obscene but the same illustrations and photographs collected in book form without the medical text would certainly be considered to be obscene.
“I think the test of obscenity is this, whether the tendency of the matter charged as obscenity is to deperave and corrupt those whose minds are open to such immoral influences, and into whose hands a publication of this sort may fall. . . . . it is quite certain that it would suggest to the minds of the young of either sex, or even to persons of more advanced years, thoughts of a most impure and libidinous character.”
He wants us to say that a book is not necessarily obscene because there is a word here or a word there, or a passage here and a passage there which may be offensive to particularly sensitive persons. He says that the overall effect of the book should be the test and secondly, that the book should only be condemned if it has no redeeming merit at all, for then it is “dirt for dirt’s sake”, or as Mr. Justice Frankfurter put it in his inimitable way “dirt for money’s sake.
We need not attempt to bowdlerize all literature and thus rob speech and expression of freedom. A balance should be maintained between freedom of speech and expression and public decency and morality but when the latter is substantially transgressed the former must give way.
The taboo on sex in art and literature which was more strict thirty-five years ago, seemed to him to corrode domestic and social life and his definite view was that a candid discussion of sex through art was the only catharsis for purifying and relieving the congested emotion is.
“The law seeks to protect not those who protect themselves, but those whose prurient minds take delight and sexual pleasures from erotic writings.”
via | Ranjit D. Udeshi vs State Of Maharashtra on 19 August, 1964
The word “obscene” in the section is not limited to writings, pictures etc. intended to arouse sexual desire. At the same time the mere treating with sex and nudity in art and literature is not per se evidence of obscenity.
Exception. – This section does not extend to any book, pamphlet, writing, drawing or painting kept or used bona fide for religious purposes or any representation sculptured, engraved, painted or otherwise represented on or in any temple, or on any car used for the conveyance of idols, or kept or used for any religious purpose.”
This was I think long back, but the views have not changed ever since the. The idea that somethings are bad for everyone is something which all cultures adhere to, and it is very hard for people, especially people in power to let this notion go. This is another way of controlling people. This is what is common to fundamentalism and democracy. The notion that our past was a golden one, and anything new will harm it and jeopardize the future of the culture. From what I feel is that there was no golden past, it just was.
And thinking about morality, though they say that there are some universal principles, everyone does not subscribe to same ones. In his theory Kohlberg, outlines these differences. But that said, he does not talk about obscenity, which I think it is highly cultural. For example a burqa clad woman is a common picture in certain Islamic communities, or a woman with ghunghat is all but common in certain Hindu communities, but at the same time some people might be find it too restrictive. And a woman in short skirt might be a common scene in the urban areas in certain countries, but it might be a great taboo for some others. There are no universal standards for what counts as moral or decent.
Using Inkscape in Batch Mode
Recently I had to make and print a lot of certificates, each with different names and affiliations. There are programs in the Office environment which do this. They are called as Mail Merge, primarily being used for sending mass mails to many individuals.
Basically following happens:
You have a database of Names / Addresses and Affiliations with you. Lets say there are 500 names in this database. If you want to make certificates for everyone of them, it is not very bright to manually add every name to the certificates. What the program does is takes this list of names, and inserts it into a template and generates a file for each entry in the database. Which is to be printed.
I had designed a certificate for one of the programs using a Free Software SVG Editor Inkscape, initially the number of entries was not large, but then they became too much for me to manage manually.
So then there is small plugin called the Inkscape Generator that came to help me big time.
This is something that I had been exactly looking for.
As explained on the page for the plugin the database has to be in a csv format, which can be conveniently generated and edited in any of the spreadsheet programs like Calc for Libre Office. With this it becomes super-easy to generate pdf’s for each of the entries in the database.
Once all the pdf’s have been generated using pdftk one can simple join all the files in a single pdf file and print at one go.
To join:
pdftk *.pdf cat output combined.pdf
As simple as this.
Does Tulsi has environmental benefits too?
Recently there was a news item in Times of India which had the same heading as that of this particular post. The news claimed
(Around two decades back Dada Dham, a socio-spiritual organization brought together a team of botanists, ayurvedic scholars and environmental enthusiasts to study the environmental benefits of tulsi.)NAGPUR: Ayurvedic medicinal values of Tulsi are well known. Our ancient scriptures have enumerated the medicinal benefits of tulsi. Its extracts are used widely for curing common ailments like common cold, headache, stomach disorder etc.
But the environmental benefits have been comparatively unknown. Around two decades back Dada Dham, a socio-spiritual organization brought together a team of botanists, ayurvedic scholars and environmental enthusiasts to study the environmental benefits of tulsi.
Now the next claim from an “eminent botanist” that the report does is startling indeed.
“Tulsi gives out oxygen for 20 hours and ozone for four hours a day along with the formation of nascent oxygen which absorbs harmful gases like carbon monoxide, carbon dioxide and sulphur dioxide from the environment,” said Shyamkant Padoley, an eminent botanist.
How would the tulsi plant (Ocimum tenuiflorum) do this? Is it anatomically so different that it is capable to do this? How does the plant regulate this 20 and 4 hour cycle? I would really like to know. How is that no other plants have this cycle? How did they detect presence of ozone, what detectors they used? What mechanisms in presently known cycle of photosynthesis account for this cycle? And if this is part of the standard photosynthesis process, then all plants should have it. This seems fishy, and a most preliminary search did not yield any positive result. All of them talk about production of oxygen and not ozone, as reported by Padoley. And if this is indeed true, it might lead to change in our conception of the photosynthetic cycle.
And if the ozone report is to be believed at all then this is what ozone does to you quote from Wikipedia article on ozone:
Ozone is a powerful oxidant (far more so than dioxygen) and has many industrial and consumer applications related to oxidation. This same high oxidizing potential, however, causes ozone to damage mucus and respiratory tissues in animals, and also tissues in plants, above concentrations of about 100 parts per billion. This makes ozone a potent respiratory hazard and pollutant near ground level.…There is evidence of significant reduction in agricultural yields because of increased ground-level ozone and pollution which interferes with photosynthesis and stunts overall growth of some plant species. The United States Environmental Protection Agency is proposing a secondary regulation to reduce crop damage, in addition to the primary regulation designed for the protection of human health.…There is a great deal of evidence to show that ground level ozone can harm lung function and irritate the respiratory system.Exposure to ozone and the pollutants that produce it is linked to premature death, asthma, bronchitis, heart attack, and other cardiopulmonary problems.…
Ozone is air pollutant, green house gas.
To summarize this is that ozone is NOT GOOD for us at ground level! It may do us good in upper atmosphere to block UV Rays, but down here on ground it is bad. And if this claim of ozone production by Tulsi is true why is the campaign of “Tulsi lagao pradushan hatoa (Plant tulsi, remove pollution)” which follows in the article is being implemented?
Padoley, member of technical committee, ministry of environment and forest, NewDelhi, and forest tech committee, also read a paper at the International Conference on Occupational Respiratory Diseases at Kyoto in 1997 where cyclo oxygenate, an enzyme only found in tulsi was labelled for the first time. This enzyme regulates the entire mechanism of oxygen evolution. (emphasis added)
This again I am unable to understand. It says this enzyme is “only found in Tulsi”, and it also “regulates entire mechanism of oxygen evolution”. One can agree that a particular enzyme is found in a particular plant, but if this enzyme controls “entire mechanism of oxygen evolution”, how do other plants regulate their mechanisms of oxygen evolution.
Dada Dham initiated a campaign ‘Tulsi Lagao Pradushan Hatao’ in 1987 under the guidance of Narendra Dada, the institution’s head. It was under this campaign that the above mentioned panel of experts was formed. After finding out the environmental benefits of the plant, Dada Dham organized a number of programmes like street plays, nukkad sabhas and lectures to propagate the use of the plant.
Dr Dattatraya Saraf, an ayurvedic doctor and expert said, “The plant enriches the environment with oxygen almost 24X7 and also absorbs other pollutants.” He further added that if the size of the plant can be increased, the environmental benefits can be increased.
This statement that “plant enriches the environment with oxygen almost 24X7” is in contradiction to statement by above Padoley regarding 20 and 4 hour cycles. Which one is to be believed? And mind you this is just appearing a few lines later, this is either very poor editing and reporting, or hogwash to the public.
“That is why we want to urge scientists and concerned authorities to make research on the issue of increasing the height of tulsi plant. If big trees can be converted to bonsai plants then big tulsi trees can be possible too,” said Kishor Verma, PRO of Dada Dham.
This is another statement that I would like to contest. Did they compare the rate of oxygen production vis-a-vis to other plants. That is to say simply did they have any control sample? And does making “tulsi tree” make any sense (can one really do it is another question), will it really increase oxygen making capabilities, is it a linear relationship between these two variables? The water is completely muddy in this !
He also citied the research and work by other organization in support of tulsi’s environmental benefits.
“The forest department of Uttar Pradesh, with the help of an organization called Organic India Limited, Lucknow planted lakhs of tulsi saplings around Taj Mahal to protect its surface from industrial emissions. This step has yielded positive results,” Verma said.
“We are just asking the administration to take notice of these extra ordinary benefits of tulsi and take steps for utilizing them. Even simple steps like planting tulsi plants on road dividers, parks etc can bring a difference,” said Verma.
The reporter and also the editor make no effort to correct these glaring inconsistencies in the report itself, forget about doing nay research on the topic, or verifying the claims made by these people. Maybe this was like the paid news that is talked about a lot these days.
What I find here i that the agenda of what is to be done was already set, the conclusions were already drawn, by our ancestors, written in black and white in ancient texts. The point was only to justify what they were doing, and trying to provide a “scientific basis” of what they already believed to be true (for whatever reasons, mostly religious, and presence of a religious organization in this sort of confirms this).
A good example of pseudo-science and bad science reporting.
Science, a humanistic approach
Science is an adventure of the whole human race to learn to live in and perhaps to love the universe in which they are. To be a part of it is to understand, to understand oneself, to begin to feel that there is a capacity within man far beyond what he felt he had, of an infinite extension of human possibilities . . .
I propose that science be taught at whatever level, from the lowest to the highest, in the humanistic way. It should be taught with a certain historical understanding , with a certain philosophical understanding , with a social understanding and a human understanding in the sense of the biography, the nature of the people who made this construction, the triumphs, the trials, the tribulations.
I. I. RABI
Nobel Laureate in Physics
via Project Physics Course, Unit 4 Light and Electromagnetism Preface
Do see the Project Physics Course which has come in Public Domain hosted at the Internet Archive, thanks to F. James Rutherford.
RMS on Success
“Success” is not our goal; we’re not here to win a race, we are here to win freedom. I didn’t write GCC with the idea of making a “better” C compiler. I wrote it so there would be a freedom-respecting C compiler, and while I was at it, I did the best job I knew how. We didn’t develop GNU to have a “better” operating system than Unix; we developed it so we could have a freedom-respecting operating system. It’s the same today.
Does your room looks like this?
Then you are a bibliophile!