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Another example illustrating the central dogma is the French optical telegraph.

The telegraph was an optical communication system with stations consisting of large movable pointers mounted on the tops of sixty-foot towers. Each station was manned by an operator who could read a message transmitted by a neighboring station and transmit the same message to the next station in the transmission line.

The distance between neighbors was about seven miles. Along the transmission lines, optical messages in France could travel faster than drum messages in Africa. When Napoleon took charge of the French Republic in 1799, he ordered the completion of the optical telegraph system to link all the major cities of France from Calais and Paris to Toulon and onward to Milan. The telegraph became, as Claude Chappe had intended, an important instrument of national power. Napoleon made sure that it was not available to private users.

rather than being forced to wait for parliament to meet to air their dissent, now opposition parties are able to post pre-emptively their criticisms online, shifting the time and space of Singapore's political debate

Singapore's People's Action Party (PAP)-dominated politics are increasingly being contested online and over social media like blogs, Facebook and Twitter. Pushed by the perceived pro-PAP bias of the mainstream media, Singapore's opposition parties are using various new media to communicate with voters and express dissenting views. Alternative news websites, including The Online Citizen and Temasek Review, have won strong followings by presenting more opposition views in their news mix.

Despite its democratic veneer, Singapore rates poorly in global press freedom rankings due to a deeply entrenched culture of self-censorship and a pro-state bias in the mainstream media. Reporters Without Borders, a France-based press freedom advocacy group, recently ranked Singapore 136th in its global press freedom rankings, scoring below repressive countries like Iraq and Zimbabwe. The country's main media publishing house, Singapore Press Holdings, is owned by the state and its board of directors is made up largely of PAP members or other government-linked executives. Senior newspaper editors, including at the Straits Times, must be vetted and approved by the PAP-led government.

In your article, you make the argument that “Straits Times Forum Editor, was merely amending his (my) letter to cite the correct statistics. “For example, the Education Minister said “How children from the bottom one-third by socio-economic background fare: One in two scores in the top two-thirds at PSLE” - But, Mr Samuel Wee wrote “His statement is backed up with the statistic that 50% of children from the bottom third of the socio-economic ladder score in the bottom third of the Primary School Leaving Examination”.” Kind sir, the statistics state that 1 in 2 are in the top 66.6% (Which, incidentally, includes the top fifth of the bottom 50%!) Does it not stand to reason, then, that if 50% are in the top 66.6%, the remaining 50% are in the bottom 33.3%, as I stated in my letter?

Also, perhaps you were not aware of the existence of this resource, but here is a graph from the Straits Times illustrating the fact that only 10% of children from one-to-three room flats make it to university–which is to say, 90% of them don’t. http://www.straitstimes.com/STI/STIMEDIA/pdf/20110308/a10.pdf I look forward to your reply, Mr Leong. Thank you for taking the time to read this message.

we should, wherever possible, try to agree to disagree, as it is healthy to have and to encourage different viewpoints.

I refer to the article “Straits Times! Why you edit until like that?” (theonlinecitizen, Mar 24). In my view, the Straits Times Forum Editor was not wrong to edit the letter.

From a statistical pespective, the forum letter writer, Mr Samuel Wee, was quoting the wrong statistics.

For example, the Education Minister said “How children from the bottom one-third by socio-economic background fare: One in two scores in the top two-thirds at PSLE” - But, Mr Samuel Wee wrote “His statement is backed up with the statistic that 50% of children from the bottom third of the socio-economic ladder score in the bottom third of the Primary School Leaving Examination”. Another example is Mr Wee’s: “it is indeed heartwarming to learn that only 90% of children from one-to-three-room flats do not make it to university”, when the Straits Times article “New chapter in the Singapore Story”http://pdfcast.org/pdf/new-chapter-in-singapore-story of 8 March, on the Minister’s speech in Parliament, clearly showed in the graph “Progression to Unis and Polys” (Source: MOE  (Ministry of Eduction)), that the “percentage of P1 pupils who lived in 1- to 3-room HDB flats and subsequently progressed to tertiary education”, was about 50 per cent, and not the ’90 per cent who do not make it’ cited by Mr Samuel Wee.

Last summer NCAR issued a dramatic press release announcing that oil from the Gulf spill would soon be appearing on the beaches of the Atlantic ocean.  I discussed it here. Here are the first four paragraphs of that press release: BOULDER—A detailed computer modeling study released today indicates that oil from the massive spill in the Gulf of Mexico might soon extend along thousands of miles of the Atlantic coast and open ocean as early as this summer. The modeling results are captured in a series of dramatic animations produced by the National Center for Atmospheric Research (NCAR) and collaborators. he research was supported in part by the National Science Foundation, NCAR’s sponsor. The results were reviewed by scientists at NCAR and elsewhere, although not yet submitted for peer-review publication. “I’ve had a lot of people ask me, ‘Will the oil reach Florida?’” says NCAR scientist Synte Peacock, who worked on the study. “Actually, our best knowledge says the scope of this environmental disaster is likely to reach far beyond Florida, with impacts that have yet to be understood.” The computer simulations indicate that, once the oil in the uppermost ocean has become entrained in the Gulf of Mexico’s fast-moving Loop Current, it is likely to reach Florida's Atlantic coast within weeks. It can then move north as far as about Cape Hatteras, North Carolina, with the Gulf Stream, before turning east. Whether the oil will be a thin film on the surface or mostly subsurface due to mixing in the uppermost region of the ocean is not known.

A few weeks ago NCAR's David Hosansky who presumably wrote that press release, asks whether NCAR got it wrong.  His answer?  No, not really: During last year’s crisis involving the massive release of oil into the Gulf of Mexico, NCAR issued a much-watched animation projecting that the oil could reach the Atlantic Ocean. But detectable amounts of oil never made it to the Atlantic, at least not in an easily visible form on the ocean surface. Not surprisingly, we’ve heard from a few people asking whether NCAR got it wrong. These events serve as a healthy reminder of a couple of things: *the difference between a projection and an actual forecast *the challenges of making short-term projections of natural processes that can act chaotically, such as ocean currents

What then went wrong? First, the projection. Scientists from NCAR, the Department of Energy’s Los Alamos National Laboratory, and IFM-GEOMAR in Germany did not make a forecast of where the oil would go. Instead, they issued a projection. While there’s not always a clear distinction between the two, forecasts generally look only days or hours into the future and are built mostly on known elements (such as the current amount of humidity in the atmosphere). Projections tend to look further into the future and deal with a higher number of uncertainties (such as the rate at which oil degrades in open waters and the often chaotic movements of ocean currents). Aware of the uncertainties, the scientific team projected the likely path of the spill with a computer model of a liquid dye. They used dye rather than actual oil, which undergoes bacterial breakdown, because a reliable method to simulate that breakdown was not available. As it turned out, the oil in the Gulf broke down quickly due to exceptionally strong bacterial action and, to some extent, the use of chemical dispersants.

A more important metric for Facebook is the same one that advertisers need to be looking at before they consider the social network for marketing efforts. How many of those accounts are active and real? It’s less of an issue for Facebook than it is for Twitter but all of the talk of total number of accounts in a social network is starting to sound like TV’s old mantra of how many households they reach. It’s an empty number that anyone who is doing even a little thinking will see as hype and not truly important.

there were suggestions of doom for Facebook and the concern that growth had stopped unless they get into China

The possibility of burn out on the service is considered as well

One is reminded of the pathetic performance of BP CEO Tony Hayward at the US Senate hearings on the Gulf of Mexico oil rig disaster. BP employed 90,000 staff globally. Tony Hayward denied awareness of the cost-cutting obsessions which compromised safety standards across the company. He did not know who approved such dangerous compromises and how such risky operations at sea were supervised. Perhaps he too was betrayed by the people he trusted?

Two high profile CEOs of high profile global corporations, both clueless when internal malpractice explodes into world news? Such lame excuses are unacceptable from corporate chiefs and political leaders. They are given too much power over people, resources and policy to be allowed to slither away.

Mr Murdoch espoused no particular political ideology. Some might call it a lack of principles. If anything was consistent in his media philosophy, it was profitable opportunism. If that meant pandering to the public appetite for ritual sacrifice of the rich and famous, so be it. If that meant offering a megaphone to Christian fanatics of America’s Bible belt and the kooky Tea Party wing of the Republicans, he would oblige. If bare breasts and titillation will outsell rival tabloids, fine.

Despite a gradual change for the better, pre-puberty transgender cases are still a noticeably tabloid-exploitative, morally and ethically ambiguous matter.

The only problem is that many young children grow out of the identity confusion when they hit puberty. Oh, and the initial hormone blocker treatment is irreversible.

But then that's essentially the crux of the argument: does immaturity necessarily equal a lack of self-awareness? And when exactly is a right time for the all-important gender reassignment?

A man was caught with more than 500 offensive photos in his mobile phone. This happened after a woman complained against him taking a picture of her chest at a shopping centre.

"My husband and I were shocked when we were shown the data because there were more than 500 pictures of various women that this man took. All the pictures were of their chests and breasts. From the angle of the shots, I could see that the women in these pictures were not aware that they were victims."

According to the law, anyone who takes offensive photos of a woman in a public place without the lady's prior consent can be charged for outrage of modesty. If found guilty, the persons involved faces a fine, up to a year in jail or both.

Labelling the pump that dispenses in ml/hr in a different color from the pump that dispenses in ml/day would be an obvious remedy that would have addressed the KK incident. It's the common-sensical solution that anyone can think of.

Sometimes, design flaws like that really do occur because engineers can't see the wood for the trees.

But sometimes the team is aware of these issues and highlights them to management, but the manufacturer still proceeds as before. Why is that? Because in addition to design principles, one must be mindful that there are always business considerations at play as well. Manufacturing two (or more) separate designs for pumps incurs greater costs, eliminates the ability to standardize across pumps, increases holding inventory, and overall increases complexity of business and manufacturing processes, and decreases economies of scale. All this naturally reduces profitability.It's not just pumps. Even medicines are typically sold in identical-looking vials with identically colored vial caps, with only the text on the vial labels differentiating them in both drug type and concentration. You can imagine what kinds of accidents can potentially happen there.

brain-computer interface, or BCI

is a branch of science exploring how computers and the human brain can be meshed together. It sounds like science fiction (and can look like it too), but it is motivated by a desire to help chronically injured people. They include those who have lost limbs, people with Lou Gehrig's disease, or those who have been paralysed by severe spinal-cord injuries. But the group of people it might help the most are those whom medicine assumed were beyond all hope: sufferers of "locked-in syndrome".

These are often stroke victims whose perfectly healthy minds end up trapped inside bodies that can no longer move. The most famous example was French magazine editor Jean-Dominique Bauby who managed to dictate a memoir, The Diving Bell and the Butterfly, by blinking one eye. In the book, Bauby, who died in 1997 shortly after the book was published, described the prison his body had become for a mind that still worked normally.

I have been intrigued by an essay by my colleague Michael Ruse, entitled “Evolution and the idea of social progress,” published in a collection that I am reviewing, Biology and Ideology from Descartes to Dawkins (gotta love the title!), edited by Denis Alexander and Ronald Numbers.

Ruse's essay in the Alexander-Numbers collection questions the received story about the early evolution of evolutionary theory, which sees the stuff that immediately preceded Darwin — from Lamarck to Erasmus Darwin — as protoscience, the immature version of the full fledged science that biology became after Chuck's publication of the Origin of Species. Instead, Ruse thinks that pre-Darwinian evolutionists really engaged in pseudoscience, and that it took a very conscious and precise effort on Darwin’s part to sweep away all the garbage and establish a discipline with empirical and theoretical content analogous to that of the chemistry and physics of the time.

Ruse asserts that many serious intellectuals of the late 18th and early 19th century actually thought of evolution as pseudoscience, and he is careful to point out that the term “pseudoscience” had been used at least since 1843 (by the physiologist Francois Magendie)

I will focus on a single detailed essay he wrote entitled “Superintelligence and Singularity,” which was originally published as chapter 1 of his The Singularity is Near (Viking 2005), and has been reprinted in an otherwise insightful collection edited by Susan Schneider, Science Fiction and Philosophy.

Kurzweil begins by telling us that he gradually became aware of the coming Singularity, in a process that, somewhat peculiarly, he describes as a “progressive awakening” — a phrase with decidedly religious overtones. He defines the Singularity as “a future period during which the pace of technological change will be so rapid, its impact so deep, that human life will be irreversibly transformed.” Well, by that definition, we have been through several “singularities” already, as technology has often rapidly and irreversibly transformed our lives.

The major piece of evidence for Singularitarianism is what “I [Kurzweil] have called the law of accelerating returns (the inherent acceleration of the rate of evolution, with technological evolution as a continuation of biological evolution).”

"A MAN WITH A CONVICTION is a hard man to change. Tell him you disagree and he turns away. Show him facts or figures and he questions your sources. Appeal to logic and he fails to see your point." So wrote the celebrated Stanford University psychologist Leon Festinger (PDF)

How would people so emotionally invested in a belief system react, now that it had been soundly refuted? At first, the group struggled for an explanation. But then rationalization set in. A new message arrived, announcing that they'd all been spared at the last minute. Festinger summarized the extraterrestrials' new pronouncement: "The little group, sitting all night long, had spread so much light that God had saved the world from destruction." Their willingness to believe in the prophecy had saved Earth from the prophecy!

This tendency toward so-called "motivated reasoning" helps explain why we find groups so polarized over matters where the evidence is so unequivocal: climate change, vaccines, "death panels," the birthplace and religion of the president (PDF), and much else. It would seem that expecting people to be convinced by the facts flies in the face of, you know, the facts.

The authors of the new paper point out just how hard it is to study languages. We're aware of over 7,000 of them, and they vary significantly in complexity. There are a number of large language families that are likely derived from a single root, but a large number of languages don't slot easily into one of the major groups. Against that backdrop, even a set of simple structural decisions—does the noun or verb come first? where does the preposition go?—become dizzyingly complex, with different patterns apparent even within a single language tree.

Linguists, however, have been attempting to find order within the chaos. Noam Chomsky helped establish the Generative school of thought, which suggests that there must be some constraints to this madness, some rules that help make a language easier for children to pick up, and hence more likely to persist. Others have approached this issue via a statistical approach (the authors credit those inspired by Joseph Greenberg for this), looking for word-order rules that consistently correlate across language families. This approach has identified a handful of what may be language universals, but our uncertainty about language relationships can make it challenging to know when some of these are correlations are simply derived from a common inheritance.

For anyone with a biology background, having traits shared through common inheritance should ring a bell. Evolutionary biologists have long been able to build family trees of related species, called phylogenetic trees. By figuring out what species have the most traits in common and grouping them together, it's possible to identify when certain features have evolved in the past. In recent years, the increase in computing power and DNA sequences to align has led to some very sophisticated phylogenetic software, which can analyze every possible tree and perform a Bayesian statistical analysis to figure out which trees are most likely to represent reality. By treating language features like subject-verb order as a trait, the authors were able to perform this sort of analysis on four different language families: 79 Indo-European languages, 130 Austronesian languages, 66 Bantu languages, and 26 Uto-Aztecan languages. Although we don't have a complete roster of the languages in those families, they include over 2,400 languages that have been evolving for a minimum of 4,000 years.

Background When processing microarray data sets, we recently noticed that some gene names were being changed inadvertently to non-gene names. Results A little detective work traced the problem to default date format conversions and floating-point format conversions in the very useful Excel program package. The date conversions affect at least 30 gene names; the floating-point conversions affect at least 2,000 if Riken identifiers are included. These conversions are irreversible; the original gene names cannot be recovered. Conclusions Users of Excel for analyses involving gene names should be aware of this problem, which can cause genes, including medically important ones, to be lost from view and which has contaminated even carefully curated public databases. We provide work-arounds and scripts for circumventing the problem.

James White of the University of Colorado at Boulder told fellow researchers to use plain language when describing their research to a general audience. Focusing on the reports technical details could obscure the basic science. To put it bluntly, “if you put more greenhouse gases in the atmosphere, it will get warmer,” he said. US climate scientist Robert Corell said it was pertinent to try to reach out to all members of society to spread awareness of Arctic melt and the impact it has on the whole world. “Stop speaking in code. Rather than 'anthropogenic,' you could say 'human caused,” Corell said at the conference of nearly 400 scientists.

ost disclosure statements are not designed to be read; they are designed to be clicked on. But some companies actually want their customers to read and understand the statements. They don’t want customers who might sue, and, just in case, they want to be able to prove that the customers did understand the risks. So the leaders in disclosure statements right now tend to be financial and health-care companies – and also space-travel and extreme-sports vendors. They sincerely want to let their customers know what they are getting into, because a regretful customer is a vengeful one. That means making disclosure statements readable. I would suggest turning them into a quiz. The user would not simply click a single button, but would have to select the right button for each question. For example: What are my chances of dying in space? A) 5% B) 30% C) 1-4% (the correct answer, based on experience so far; current spacecraft are believed to be safer.) Now imagine: Who can see my data? A) I can. B) XYZ Corporation. C) XYZ Corporation’s marketing partners. (Click here to see the list.) D) XYZ Corporation’s affiliates and anyone it chooses. As the customer picks answers, she gets a good idea of what is going on. In fact, if you're a marketer, why not dispense with a single right answer and let the consumer specify what she wants to have happen with her data (and corresponding privileges/access rights if necessary)? That’s much more useful than vague policy statements. Suddenly, the disclosure statement becomes a consumer application that adds value to the vendor-consumer relationship.

And show the data themselves rather than a description.

this is all very easy if you are the site with which the user communicates directly; it is more difficult if you are in the background, a third party collecting information surreptitiously. But that practice should be stopped, anyway.