Tag Archives: critical thinking

Chomsky

Chomsky. It’s highly likely that the mere sound of his name will polarize you. You will find yourself either for Noam Chomsky or adamantly against. You will either stand with him on the Arab-Israeli conflict or you won’t; you either support his libertarian-socialist views or you’re firmly against; you either agree with him on issues of privacy and authority or you don’t. However, regardless of your position on the Chomsky-support-scale you have to recognize that once he’s gone — he’s 84 years old — he’ll be recognized as one of the world’s great contemporary thinkers and writers. In the same mold as George Orwell, who was one of Chomsky’s early influences, Chomsky speaks truth to power. Whether the topic is political criticism, mass media, analytic philosophy, the military-industrial complex, computer science or linguistics the range of Chomsky’s discourse is astonishing, and his opinion not to be ignored.

From the Guardian:

It may have been pouring with rain, water overrunning the gutters and spreading fast and deep across London’s Euston Road, but this did not stop a queue forming, and growing until it snaked almost all the way back to Euston station. Inside Friends House, a Quaker-run meeting hall, the excitement was palpable. People searched for friends and seats with thinly disguised anxiety; all watched the stage until, about 15 minutes late, a short, slightly top-heavy old man climbed carefully on to the stage and sat down. The hall filled with cheers and clapping, with whoops and with whistles.

Noam Chomsky, said two speakers (one of them Mariam Said, whose late husband, Edward, this lecture honours) “needs no introduction”. A tired turn of phrase, but they had a point: in a bookshop down the road the politics section is divided into biography, reference, the Clintons, Obama, Thatcher, Marx, and Noam Chomsky. He topped the first Foreign Policy/Prospect Magazine list of global thinkers in 2005 (the most recent, however, perhaps reflecting a new editorship and a new rubric, lists him not at all). One study of the most frequently cited academic sources of all time found that he ranked eighth, just below Plato and Freud. The list included the Bible.

When he starts speaking, it is in a monotone that makes no particular rhetorical claim on the audience’s attention; in fact, it’s almost soporific. Last October, he tells his audience, he visited Gaza for the first time. Within five minutes many of the hallmarks of Chomsky’s political writing, and speaking, are displayed: his anger, his extraordinary range of reference and experience – journalism from inside Gaza, personal testimony, detailed knowledge of the old Egyptian government, its secret service, the new Egyptian government, the historical context of the Israeli occupation, recent news reports (of sewage used by the Egyptians to flood tunnels out of Gaza, and by Israelis to spray non-violent protesters). Fact upon fact upon fact, but also a withering, sweeping sarcasm – the atrocities are “tolerated politely by Europe as usual”. Harsh, vivid phrases – the “hideously charred corpses of murdered infants”; bodies “writhing in agony” – unspool until they become almost a form of punctuation.

You could argue that the latter is necessary, simply a description of atrocities that must be reported, but it is also a method that has diminishing returns. The facts speak for themselves; the adjectives and the sarcasm have the counterintuitive effect of cheapening them, of imposing on the world a disappointingly crude and simplistic argument. “The sentences,” wrote Larissa MacFarquhar in a brilliant New Yorker profile of Chomsky 10 years ago, “are accusations of guilt, but not from a position of innocence or hope for something better: Chomsky’s sarcasm is the scowl of a fallen world, the sneer of hell’s veteran to its appalled naifs” – and thus, in an odd way, static and ungenerative.

first came to prominence in 1959, with the argument, detailed in a book review (but already present in his first book, published two years earlier), that contrary to the prevailing idea that children learned language by copying and by reinforcement (ie behaviourism), basic grammatical arrangements were already present at birth. The argument revolutionised the study of linguistics; it had fundamental ramifications for anyone studying the mind. It also has interesting, even troubling ramifications for his politics. If we are born with innate structures of linguistic and by extension moral thought, isn’t this a kind of determinism that denies political agency? What is the point of arguing for any change at all?

“The most libertarian positions accept the same view,” he answers. “That there are instincts, basic conditions of human nature that lead to a preferred social order. In fact, if you’re in favour of any policy – reform, revolution, stability, regression, whatever – if you’re at least minimally moral, it’s because you think it’s somehow good for people. And good for people means conforming to their fundamental nature. So whoever you are, whatever your position is, you’re making some tacit assumptions about fundamental human nature … The question is: what do we strive for in developing a social order that is conducive to fundamental human needs? Are human beings born to be servants to masters, or are they born to be free, creative individuals who work with others to inquire, create, develop their own lives? I mean, if humans were totally unstructured creatures, they would be … a tool which can properly be shaped by outside forces. That’s why if you look at the history of what’s called radical behaviourism, [where] you can be completely shaped by outside forces – when [the advocates of this] spell out what they think society ought to be, it’s totalitarian.”

Chomsky, now 84, has been politically engaged all his life; his first published article, in fact, was against fascism, and written when he was 10. Where does the anger come from? “I grew up in the Depression. My parents had jobs, but a lot of the family were unemployed working class, so they had no jobs at all. So I saw poverty and repression right away. People would come to the door trying to sell rags – that was when I was four years old. I remember riding with my mother in a trolley car and passing a textile worker’s strike where the women were striking outside and the police were beating them bloody.”

He met Carol, who would become his wife, at about the same time, when he was five years old. They married when she was 19 and he 21, and were together until she died nearly 60 years later, in 2008. He talks about her constantly, given the chance: how she was so strict about his schedule when they travelled (she often accompanied him on lecture tours) that in Latin America they called her El Comandante; the various bureaucratic scrapes they got into, all over the world. By all accounts, she also enforced balance in his life: made sure he watched an hour of TV a night, went to movies and concerts, encouraged his love of sailing (at one point, he owned a small fleet of sailboats, plus a motorboat); she water-skied until she was 75.

But she was also politically involved: she took her daughters (they had three children: two girls and a boy) to demonstrations; he tells me a story about how, when they were protesting against the Vietnam war, they were once both arrested on the same day. “And you get one phone call. So my wife called our older daughter, who was at that time 12, I guess, and told her, ‘We’re not going to come home tonight, can you take care of the two kids?’ That’s life.” At another point, when it looked like he would be jailed for a long time, she went back to school to study for a PhD, so that she could support the children alone. It makes no sense, he told an interviewer a couple of years ago, for a woman to die before her husband, “because women manage so much better, they talk and support each other. My oldest and closest friend is in the office next door to me; we haven’t once talked about Carol.” His eldest daughter often helps him now. “There’s a transition point, in some way.”

Does he think that in all these years of talking and arguing and writing, he has ever changed one specific thing? “I don’t think any individual changes anything alone. Martin Luther King was an important figure but he couldn’t have said: ‘This is what I changed.’ He came to prominence on a groundswell that was created by mostly young people acting on the ground. In the early years of the antiwar movement we were all doing organising and writing and speaking and gradually certain people could do certain things more easily and effectively, so I pretty much dropped out of organising – I thought the teaching and writing was more effective. Others, friends of mine, did the opposite. But they’re not less influential. Just not known.”

Read the entire article following the jump.

Beautiful Explanations

Each year for the past 15 years Edge has posed a weighty question to a group of scientists, researchers, philosophers, mathematicians and thinkers. For 2012, Edge asked the question, “What Is Your Favorite Deep, Elegant, or Beautiful Explanation?”, to 192 of our best and brightest. Back came 192 different and no-less wonderful answers. We can post but a snippet here, so please visit the Edge, and then make a note to buy the book (it’s not available yet).

Read the entire article here.

The Mysterious Coherence Between Fundamental Physics and Mathematics
Peter Woit, Mathematical Physicist, Columbia University; Author, Not Even Wrong

Any first course in physics teaches students that the basic quantities one uses to describe a physical system include energy, momentum, angular momentum and charge. What isn’t explained in such a course is the deep, elegant and beautiful reason why these are important quantities to consider, and why they satisfy conservation laws. It turns out that there’s a general principle at work: for any symmetry of a physical system, you can define an associated observable quantity that comes with a conservation law:

1. The symmetry of time translation gives energy
2. The symmetries of spatial translation give momentum
3. Rotational symmetry gives angular momentum
4. Phase transformation symmetry gives charge

 

Einstein Explains Why Gravity Is Universal
Sean Carroll, Theoretical Physicist, Caltech; Author, From Eternity to Here: The Quest for the Ultimate Theory of Time

The ancient Greeks believed that heavier objects fall faster than lighter ones. They had good reason to do so; a heavy stone falls quickly, while a light piece of paper flutters gently to the ground. But a thought experiment by Galileo pointed out a flaw. Imagine taking the piece of paper and tying it to the stone. Together, the new system is heavier than either of its components, and should fall faster. But in reality, the piece of paper slows down the descent of the stone.

Galileo argued that the rate at which objects fall would actually be a universal quantity, independent of their mass or their composition, if it weren’t for the interference of air resistance. Apollo 15 astronaut Dave Scott once illustrated this point by dropping a feather and a hammer while standing in vacuum on the surface of the Moon; as Galileo predicted, they fell at the same rate.

Subsequently, many scientists wondered why this should be the case. In contrast to gravity, particles in an electric field can respond very differently; positive charges are pushed one way, negative charges the other, and neutral particles not at all. But gravity is universal; everything responds to it in the same way.

Thinking about this problem led Albert Einstein to what he called “the happiest thought of my life.” Imagine an astronaut in a spaceship with no windows, and no other way to peer at the outside world. If the ship were far away from any stars or planets, everything inside would be in free fall, there would be no gravitational field to push them around. But put the ship in orbit around a massive object, where gravity is considerable. Everything inside will still be in free fall: because all objects are affected by gravity in the same way, no one object is pushed toward or away from any other one. Sticking just to what is observed inside the spaceship, there’s no way we could detect the existence of gravity.

 

True or False: Beauty Is Truth
Judith Rich Harris, Independent Investigator and Theoretician; Author, The Nurture Assumption; No Two Alike: Human Nature and Human Individuality

“Beauty is truth, truth beauty,” said John Keats. But what did he know? Keats was a poet, not a scientist.

In the world that scientists inhabit, truth is not always beautiful or elegant, though it may be deep. In fact, it’s my impression that the deeper an explanation goes, the less likely it is to be beautiful or elegant.

Some years ago, the psychologist B. F. Skinner proposed an elegant explanation of “the behavior of organisms,” based on the idea that rewarding a response—he called it reinforcement—increases the probability that the same response will occur again in the future. The theory failed, not because it was false (reinforcement generally does increase the probability of a response) but because it was too simple. It ignored innate components of behavior. It couldn’t even handle all learned behavior. Much behavior is acquired or shaped through experience, but not necessarily by means of reinforcement. Organisms learn different things in different ways.

 

The Power Of One, Two, Three
Charles Seife, Professor of Journalism, New York University; formerly journalist, Science Magazine; Author, Proofiness: The Dark Arts of Mathematical Deception

Sometimes even the simple act of counting can tell you something profound.

One day, back in the late 1990s, when I was a correspondent for New Scientist magazine, I got an e-mail from a flack waxing rhapsodic about an extraordinary piece of software. It was a revolutionary data-compression program so efficient that it would squash every digital file by 95% or more without losing a single bit of data. Wouldn’t my magazine jump at the chance to tell the world about the computer program that will make their hard drives hold 20 times more information than every before.

No, my magazine wouldn’t.

No such compression algorithm could possibly exist; it was the algorithmic equivalent of a perpetual motion machine. The software was a fraud.

The reason: the pigeonhole principle.

 

Watson and Crick Explain How DNA Carries Genetic Information
Gary Klein, Cognitive Psychologist; Author, Sources of Power; Streetlights and Shadows: Searching for Keys to Adaptive Decision Making

In 1953, when James Watson pushed around some two-dimensional cut-outs and was startled to find that an adenine-thymine pair had an isomorphic shape to the guanine-cytosine pair, he solved eight mysteries simultaneously. In that instant he knew the structure of DNA: a helix. He knew how many strands: two. It was a double helix. He knew what carried the information: the nucleic acids in the gene, not the protein. He knew what maintained the attraction: hydrogen bonds. He knew the arrangement: The sugar-phosphate backbone was on the outside and the nucleic acids were in the inside. He knew how the strands match: through the base pairs. He knew the arrangement: the two identical chains ran in opposite directions. And he knew how genes replicated: through a zipper-like process.

The discovery that Watson and Crick made is truly impressive, but I am also interested in what we can learn from the process by which they arrived at their discovery. On the surface, the Watson-Crick story fits in with five popular claims about innovation, as presented below. However, the actual story of their collaboration is more nuanced than these popular claims suggest.

It is important to have clear research goals. Watson and Crick had a clear goal, to describe the structure of DNA, and they succeeded.

But only the first two of their eight discoveries had to do with this goal. The others, arguably the most significant, were unexpected byproducts.

Is Our Children Learning: Testing the Standardized Tests

Test grades once measured student performance. Nowadays test grades are used to measure teacher and parent, educational institution and even national performance. Gary Cutting over at the Stone forum has some instructive commentary.

[div class=attrib]From the New York Times:[end-div]

So what exactly do test scores tell us?

Poor test scores are the initial premises in most current arguments for educational reform.  At the end of last year, reading scores that showed American 15-year-olds in the middle of an international pack, led by Asian countries, prompted calls from researchers and educators for immediate action.  This year two sociologists, Richard Arum and Josipa Roksa, showed that 45 percent of students, after two years of college, have made no significant gains on a test of critical thinking.  Last week’s report of falling SAT scores is the latest example.

Given poor test results, many critics conclude that our schools are failing and propose plans for immediate action.  For example, when Arum and Raksa published their results, many concluded that college teachers need to raise standards in their courses, requiring more hours of study and assigning longer papers.

It is, however, not immediately obvious what follows from poor test scores.  Without taking any position about the state of our schools or how, if at all, they need reform, I want to reflect on what we need to add to the fact of poor scores to construct an argument for changing the way we educate.

The first question is whether a test actually tests for things that we want students to know.   We very seldom simply want students to do well on a test for its own sake.

[div class=attrib]Read more of this article here.[end-div]

[div class=attrib]Image courtesy of U.S. College Search.[end-div]