John Nash’s Beautiful Life

Matt Schiavenza in The Atlantic:

Lead_960John Nash, a Nobel laureate and mathematical genius whose struggle with mental illness was documented in the Oscar-winning film A Beautiful Mind, was killed in a car accident on Saturday. He was 86. The accident, which occurred when the taxi Nash was traveling in collided with another car on the New Jersey Turnpike, also claimed the life of his 82-year-old wife, Alicia. Neither of the two drivers involved in the accident sustained life-threatening injuries. Born in West Virginia in 1928, Nash displayed an acuity for mathematics early in life, independently proving Fermat’s little theorem before graduating from high school. By the time he turned 30 in 1958, he was a bona fide academic celebrity. At Princeton, Nash published a 27-page thesis that upended the field of game theory and led to applications in economics, international politics, and evolutionary biology. His signature solution—known as a “Nash Equilibrium”—found that competition among two opponents is not necessarily governed by zero-sum logic. Two opponents can, for instance, each achieve their maximum objectives through cooperating with the other, or gain nothing at all by refusing to cooperate. This intuitive, deceptively simple understanding is now regarded as one of the most important social science ideas in the 20th century, and a testament to his almost singular intellectual gifts.But in the late 1950s, Nash began a slide into mental illness—later diagnosed as schizophrenia—that would cost him his marriage, derail his career, and plague him with powerful delusions. Nash believed at various times that he was the biblical figure Job, a Japanese shogun, and a “messianic figure of great but secret importance.” He obsessed with numbers and believed the New York Times published coded messages from extraterrestrials that only he could read.

Mental institutions and electroshock therapy failed to cure him, and for much of the next three decades, Nash wandered freely on the Princeton campus, scribbling idly on empty blackboards and staring blankly ahead in the library.

More here.



Nature’s Waste Management Crews

Natalie Angier in The New York Times:

AntsOne of the biggest mistakes my husband made as a new father was to tell me he thought his diaper-changing technique was better than mine. From then on, guess who assumed the lion’s share of diaper patrol in our household? Or rather, the northern flicker’s share. According to a new report in the journal Animal Behaviour on the sanitation habits of these tawny, 12-inch woodpeckers with downcurving bills, male flickers are more industrious housekeepers than their mates. Researchers already knew that flickers, like many woodpeckers, are a so-called sex role reversed species, the fathers spending comparatively more time incubating the eggs and feeding the young than do the mothers. Now scientists have found that the males’ parental zeal also extends to the less sentimental realm of nest hygiene: When a chick makes waste, Dad, more readily than Mom, is the one who makes haste, plucking up the unwanted presentation and disposing of it far from home.

Researchers have identified honeybee undertakers that specialize in removing corpses from the hive, and they have located dedicated underground toilet chambers to which African mole rats reliably repair to perform their elaborate ablutions. Among chimpanzees, hygiene often serves as a major driver of cultural evolution, and primatologists have found that different populations of the ape are marked by distinctive grooming styles. The chimpanzees in the Tai Forest of Ivory Coast, for example, will extract a tick or other parasite from a companion’s fur with their fingers and then squash the offending pest against their own forearms. Chimpanzees in the Budongo Forest of Uganda prefer to daintily place the fruits of grooming on a leaf for inspection, to decide whether the dislodged bloodsuckers are safe to eat, or should simply be smashed and tossed. Budongo males, those fastidious charmers, will also use leaves as “napkins,” to wipe their penises clean after sex.

More here.

Tuesday Poem

No Snow Fell On Eden
.

as i remember it – there was no snow,
so no thaw or tao as you say

no snowmelt drooled down the brae;
no human footfall swelled into that of a yeti
baring what it shoulda kept hidden;

no yellow ice choked bogbean;
there were no sheepskulls
in the midden –

it was no allotment, eden –
they had a hothouse,
an orangery, a mumbling monkey;

there was no cabbage-patch
of rich, roseate heads;
there was no innuendo

no sea, no snow
There was nothing funny
about a steaming bing of new manure.

There was nothing funny at all.
Black was not so sooty. No fishboat revolved redly
on an eyepopping sea.

Eve never sat up late drinking and crying.
Adam knew no-one who was dying.
That was yet to come, In The Beginning.
.

by Jen Hadfield
from Poetry International Web, 2015

Monday, May 25, 2015

Sunday, May 24, 2015

This Artificial Intelligence Pioneer Has a Few Concerns

Natalie Wolchover in Wired:

ScreenHunter_1198 May. 25 06.24IN JANUARY, THE British-American computer scientist Stuart Russell drafted and became the first signatory of an open letter calling for researchers to look beyond the goal of merely making artificial intelligence more powerful. “We recommend expanded research aimed at ensuring that increasingly capable AI systems are robust and beneficial,” the letter states. “Our AI systems must do what we want them to do.” Thousands of people have since signed the letter, including leading artificial intelligence researchers at Google, Facebook, Microsoft and other industry hubs along with top computer scientists, physicists and philosophers around the world. By the end of March, about 300 research groups had applied to pursue new research into “keeping artificial intelligence beneficial” with funds contributed by the letter’s 37th signatory, the inventor-entrepreneur Elon Musk.

Russell, 53, a professor of computer science and founder of the Center for Intelligent Systems at the University of California, Berkeley, has long been contemplating the power and perils of thinking machines. He is the author of more than 200 papers as well as the field’s standard textbook, Artificial Intelligence: A Modern Approach (with Peter Norvig, head of research at Google). But increasingly rapid advances in artificial intelligence have given Russell’s longstanding concerns heightened urgency.

Recently, he says, artificial intelligence has made major strides, partly on the strength of neuro-inspired learning algorithms. These are used in Facebook’s face-recognition software, smartphone personal assistants and Google’s self-driving cars. In a bombshell resultreported recently in Nature, a simulated network of artificial neurons learned to play Atari video games better than humans in a matter of hours given only data representing the screen and the goal of increasing the score at the top—but no preprogrammed knowledge of aliens, bullets, left, right, up or down. “If your newborn baby did that you would think it was possessed,” Russell said.

More here.

A Commencement Address

Cat

Joseph Brodsky (who would've been 75 today) in the NYRB:

No matter how daring or cautious you may choose to be, in the course of your life you are bound to come into direct physical contact with what’s known as Evil. I mean here not a property of the gothic novel but, to say the least, a palpable social reality that you in no way can control. No amount of good nature or cunning calculations will prevent this encounter. In fact, the more calculating, the more cautious you are, the greater is the likelihood of this rendezvous, the harder its impact. Such is the structure of life that what we regard as Evil is capable of a fairly ubiquitous presence if only because it tends to appear in the guise of good. You never see it crossing your threshold announcing itself: “Hi, I’m Evil!” That, of course, indicates its secondary nature, but the comfort one may derive from this observation gets dulled by its frequency.

A prudent thing to do, therefore, would be to subject your notions of good to the closest possible scrutiny, to go, so to speak, through your entire wardrobe checking which of your clothes may fit a stranger. That, of course, may turn into a full-time occupation, and well it should. You’ll be surprised how many things you considered your own and good can easily fit, without much adjustment, your enemy. You may even start to wonder whether he is not your mirror image, for the most interesting thing about Evil is that it is wholly human. To put it mildly, nothing can be turned and worn inside out with greater ease than one’s notion of social justice, public conscience, a better future, etc. One of the surest signs of danger here is the number of those who share your views, not so much because unanimity has a knack of degenerating into uniformity as because of the probability—implicit in great numbers—that noble sentiment is being faked.

By the same token, the surest defense against Evil is extreme individualism, originality of thinking, whimsicality, even—if you will—eccentricity. That is, something that can’t be feigned, faked, imitated; something even a seasoned impostor couldn’t be happy with. Something, in other words, that can’t be shared, like your own skin—not even by a minority. Evil is a sucker for solidity. It always goes for big numbers, for confident granite, for ideological purity, for drilled armies and balanced sheets. Its proclivity for such things has to do presumably with its innate insecurity, but this realization, again, is of small comfort when Evil triumphs.

Which it does: in so many parts of the world and inside ourselves. Given its volume and intensity, given, especially, the fatigue of those who oppose it, Evil today may be regarded not as an ethical category but as a physical phenomenon no longer measured in particles but mapped geographically. Therefore the reason I am talking to you about all this has nothing to do with your being young, fresh, and facing a clean slate. No, the slate is dark with dirt and it’s hard to believe in either your ability or your will to clean it. The purpose of my talk is simply to suggest to you a mode of resistance which may come in handy to you one day; a mode that may help you to emerge from the encounter with Evil perhaps less soiled if not necessarily more triumphant than your precursors. What I have in mind, of course, is the famous business of turning the other cheek.

More here.

John Nash Dies at 86

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Erica Goode in the NYT (image John F. Nash Jr. at his graduation from Princeton in 1950. Credit Courtesy of Martha Nash Legg):

Dr. Nash was widely regarded as one of the great mathematicians of the 20th century, known for the originality of his thinking and for his fearlessness in wrestling down problems so difficult few others dared tackle them. A one-sentence letter written in support of his application to Princeton’s doctoral program in math said simply, “This man is a genius.”

“John’s remarkable achievements inspired generations of mathematicians, economists and scientists,’’ the president of Princeton, Christopher L. Eisgruber, said, “and the story of his life with Alicia moved millions of readers and moviegoers who marveled at their courage in the face of daunting challenges.”

Russell Crowe, who portrayed Dr. Nash in “A Beautiful Mind,” tweeted that he was “stunned,” by his death. “An amazing partnership,” he wrote. “Beautiful minds, beautiful hearts.”

Dr. Nash’s theory of noncooperative games, published in 1950 and known as Nash equilibrium, provided a conceptually simple but powerful mathematical tool for analyzing a wide range of competitive situations, from corporate rivalries to legislative decision making. Dr. Nash’s approach is now pervasive in economics and throughout the social sciences and is applied routinely in other fields, like evolutionary biology.

Harold W. Kuhn, an emeritus professor of mathematics at Princeton and a longtime friend and colleague of Dr. Nash’s who died in 2014, said, “I think honestly that there have been really not that many great ideas in the 20th century in economics and maybe, among the top 10, his equilibrium would be among them.” An economist, Roger Myerson of the University of Chicago, went further, comparing the impact of Nash equilibrium on economics “to that of the discovery of the DNA double helix in the biological sciences.”

More here.

How Pragmatism Reconciles Quantum Mechanics with Relativity etc.

Double-slit-bullets

Richard Marshall interviews Richard Healey in 3:AM Magazine:

3:AM: So does your pragmatism at work in these two cases mean that we should think of quantum mechanics as a realist or an instrumentalist theory or is it a middle way?

RH: Too often contemporary philosophers apply the terms ‘realism’ and ‘instrumentalism’ loosely in evaluating a position, as in the presumptive insult “Oh, that’s just instrumentalism!” Each term may be understood in many ways, and applied to many different kinds of things (theories, entities, structures, interpretations, languages, ….). I once characterized my pragmatist view of quantum mechanics as presenting a middle way between realism and instrumentalism. But by adopting one rather than another use of the terms ‘realism’ and ‘instrumentalism’ one can pigeon hole my view under either label.

In this pragmatist view, quantum probabilities do not apply only to results of measurements. This distinguishes the view from any Copenhagen-style instrumentalism according to which the Born rule assigns probabilities only to possible outcomes of measurements, and so has nothing to say about unmeasured systems. An agent may use quantum mechanics to adjust her credences concerning what happened to the nucleus of an atom long ago on an uninhabited planet orbiting a star in a galaxy far away, provided only that she takes this to have happened in circumstances when that nucleus’s quantum state suffered suitable environmental decoherence.

According to one standard usage, instrumentalism in the philosophy of science is the view that a theory is merely a tool for systematizing and predicting our observations. For the instrumentalist, nothing a theory supposedly says about unobservable structures lying behind but responsible for our observations should be considered significant. Moreover, instrumentalists characteristically explain this alleged lack of significance in semantic or epistemic terms: claims about unobservables are meaningless, reducible to statements about observables, eliminable from a theory without loss of content, false, or (at best) epistemically optional even for one who accepts the theory. My pragmatist view makes no use of any distinction between observable and unobservable structures, so to call it instrumentalist conflicts with this standard usage.

In this view, quantum mechanics does not posit novel, unobservable structures corresponding to quantum states, observables, and quantum probabilities; these are not physical structures at all. Nevertheless, claims about them in quantum mechanics are often perfectly significant, and many are true. This pragmatist view does not seek to undercut the semantic or epistemic status of such claims, but to enrich our understanding of their non-representational function within the theory and to show how they acquire the content they have.

More here.

The Destruction of Art and Antiquities in Our Time

Catastrophe-243x360

Frederick Bohrer reviews Catastrophe!: The Looting and Destruction of Iraq’s Past edited by Geoff Emberling and Katharyn Hanson, in the LA Review of Books:

It should surprise no one that the threat to antiquities today — worldwide — is far greater from projects for dams, airports, parking lots, and the rest of the activities of modernization than targeted wholesale devastation. I mention this because I think it offers a way to specify what, qualitatively, is the nature of the issue raised by ISIS’s actions. The effects of modernization parallel what Rob Nixon, in another context, calls “slow violence”: a gradual but devastating change effected almost invisibly on daily life. By contrast, ISIS purveys a sort of “fast violence”: shocking, theatrical, and easily commodified to the Western (addled, distracted) TV viewer, and highly useful for its own recruiting as well. I turn to the video evidence itself below. But it must first be noted that many Iraqi archaeological sites have already been devastated by slow violence as well, and one that cannot be conveniently relegated to Islamic extremism: looting.

In 2008 the Oriental Institute of the University of Chicago mounted Catastrophe!: The Looting and Destruction of Iraq’s Past, an exhibition and accompanying catalog (the best of its kind) that describes and pictures in horrifying detail the devastations to archaeological sites caused by hordes of looters, large and small. Just its cover photograph is enough to make one cringe, showing looters in 2004 actively digging at the site of the ancient city of Isin, now a blasted wasteland of hundreds of holes in the earth. As is well known, a rapacious worldwide antiquities market, unconcerned with ethics, fuels this looting; governments meanwhile rarely enforce existing laws. This market is one of the largest sources of funding for ISIS itself — another way besides television in which the organization cynically uses global norms for its own purposes. Under the economic sanctions first imposed in 1990, civil conditions in Iraq have been extraordinarily difficult and unemployment high. Looting is one of the few moneymaking opportunities available to local populations (much like drug production in Afghanistan). Thus a CNN correspondent casually mentions that the threat to antiquities also involves “ordinary people just desperate to make a living.” A prominent archaeologist of Iraq told me long ago that deprivation and economic inequality drive farmers to plow up their fields in search of artifacts, as they have little access to seeds, farm equipment, and other necessities.

More here.

Infidelity Lurks in Your Genes

Richard Friedman in The New York Times:

AFFAIR-blog427AMERICANS disapprove of marital infidelity. Ninety-one percent of them find it morally wrong, more than the number that reject polygamy, human cloning or suicide, according to a 2013 Gallup poll. Yet the number of Americans who actually cheat on their partners is rather substantial: Over the past two decades, the rate of infidelity has been pretty constant at around 21 percent for married men, and between 10 to 15 percent for married women, according to the General Social Survey at the University of Chicago’s independent research organization, NORC. We are accustomed to thinking of sexual infidelity as a symptom of an unhappy relationship, a moral flaw or a sign of deteriorating social values. When I was trained as a psychiatrist we were told to look for various emotional and developmental factors — like a history of unstable relationships or a philandering parent — to explain infidelity. But during my career, many of the questions we asked patients were found to be insufficient because for so much behavior, it turns out that genes, gene expression and hormones matter a lot. Now that even appears to be the case for infidelity.

We have long known that men have a genetic, evolutionary impulse to cheat, because that increases the odds of having more of their offspring in the world. But now there is intriguing new research showing that some women, too, are biologically inclined to wander, although not for clear evolutionary benefits. Women who carry certain variants of the vasopressin receptor gene are much more likely to engage in “extra pair bonding,” the scientific euphemism for sexual infidelity.

More here.

Remembering the Armenians

Tom Payne in The Telegraph:

Armenia2_3314581bFrom early 1915, under the “fog of war”, Armenians began to disappear from the Ottoman Empire. It could happen in a number of ways. Sometimes it was a matter of destroying villages and rounding up the inhabitants. Their murderers, Turks or Kurds, were as likely to use bayonets, swords or axes as guns, because they wanted to save bullets. Many left their homes on forced marches, to be attacked by killers, frequently thrown into the Euphrates, the women raped. Those who survived ended up in the Syrian Desert, around or in the town of Der Zor, where they were murdered or starved to death. A German witness noted: “Their stomachs, weakened by months of hunger, are no longer able to absorb any food … If you give them bread, they put it aside indifferently. They lie there quietly and wait for death.” It is impossible to say how many died. Figures begin at 600,000. Even the Ottoman government of 1919 acknowledged that 800,000 were killed. A million is probable, a million and a half possible. One problem in calculating the death toll is that some really did disappear. The slaughterers thought little of killing children, and one commander, Cevdet Bey, bragged before an attack, “I won’t leave one, not one so high,” while holding his hand below knee-height. But at other times children were taken and offered to local Muslims. Even now there are people discovering that their grandparents were survivors of the genocide.

Genocide. To study the numbers, and to hear commanders barking and repeating the orders “Burn, destroy, kill” is to think, what other word is there? And yet the rows continue to impede understanding between Turks and Armenians, and even among Armenians themselves. Those who left their homelands lobby for recognition that what happened was genocide. Those in the now-independent Republic of Armenia are more pragmatic – if they stop asking the Turks to use what negotiators have to call “the G-word”, then maybe the Turks will be calmer about Armenian claims on parts of Azerbaijan. Meanwhile, Turks don’t want to use the G-word because if they do, they fear having to give parts of Turkey to the Armenians.

More here.

Saturday, May 23, 2015

For an Octopus, Seeing the Light Doesn’t Require Eyes

Carl Zimmer in the New York Times:

20OCTOPUS-blog427Octopuses, squid and cuttlefish — a group of mollusks known as cephalopods — are the ocean’schampions of camouflage.

Octopuses can mimic the color and texture of a rock or a piece of coral. Squid can give their skin a glittering sheen to match the water they are swimming in. Cuttlefish will even cloak themselves in black and white squares should a devious scientist put a checkerboard in their aquarium.

Cephalopods can perform these spectacles thanks to a dense fabric of specialized cells in their skin. But before a cephalopod can take on a new disguise, it needs to perceive the background that it is going to blend into.

Cephalopods have large, powerful eyes to take in their surroundings. But two new studies in The Journal Experimental Biology suggest that they have another way to perceive light: their skin.

It’s possible that these animals have, in effect, evolved a body-wide eye.

More here.

Osama bin Laden’s bookshelf revealed

La-et-jc-osama-bin-laden-reading-list-20150520-001David L. Ulin at The LA Times:

“The 9/11 Commission Report” is one of the documents discovered on Bin Laden’s bookshelf — no surprise there. What better way to understand one’s enemy than to understand the narratives we hold dear?

Something similar might be said about the dozens of other federal reports in his possession, which range from the practical (applications for both new and reissued passports, instructions on how to register the birth of a U.S. citizen abroad) to the analytical (a 2009 Senate assessment of “the Evolving Al-Qaeda Threat to the Homeland,” a 2005 National Security Council “Strategy for Victory in Iraq”). It makes sense that Bin Laden would find such materials useful, for the insights they offer into our way of thinking, of strategizing, if nothing else.

And yet, I find myself compelled — and in a perverse way, cheered — by another aspect of these holdings, which is what they have to say about American transparency.

more here.

A novelist and a psychotherapist seek common ground

51nYVhut-zL._SY344_BO1,204,203,200_Talitha Stevenson at The Financial Times:

The Good Story is a fizzing collection of exchanges, begun in 2008, between JM Coetzee and the psycho­therapist Arabella Kurtz. The authors are well matched, able to draw one another out and to nudge each other in moments of complacency. What emerges is a Platonic dialogue with a postmodern twist. Rather than presenting a series of conclusions, the two retain their differences and their uncertainties: “Does this clarify something of the matter or just add to the confusion?” Coetzee writes at one point. At another, he admits: “So, as you can see, I am still stuck”.

Coetzee and Kurtz don’t confine themselves to a single issue. Instead, the book is a freewheeling conversation about psychotherapy, fiction, fantasy, repression and, in a sense that can draw these ideas together, the relationship between subjectivity and truth. It’s because of the authors’ modest intentions — they aim to discuss, not to conclude — that their minds can roam so freely. After discussing the individual’s capacity to repress, for example, they begin a loose but fascinating debate about the way in which groups or nations do the same. Coetzee refers to Australia and apartheid South Africa, Kurtz to her observations of staff in the NHS.

more here.

ANOTHER VIEW: TRACING THE FOREIGN IN LITERARY TRANSLATION

Another-viewJessica Michalofsky at The Quarterly Conversation:

In 2012, in a global game of Chinese Whispers, a single message traveled through seven languages and across six continents, starting in St. Kilda, Melbourne as “Life must be lived as play” (a commonly paraphrased quote from Plato), and ending in Homer, Alaska as “He bites snails.”

According to a Wikipedia entry, the now–politically incorrect name of the popular children’s game (alternately played as Gossip, Broken Telephone, Pass the Message, Operator, andDon’t Drink the Milk), derives from

Westerners’ use of the word Chinese to denote “confusion” and “incomprehensibility” to the earliest contacts between Europeans and Chinese people in the 1600s, and attribute[s] it to Europeans’ inability to understand China’s culture and worldview.

Chinese, it was assumed, like other “foreign” languages, was an incomprehensible one. Common phrases like it’s all Greek to me, mumbo jumbo, gibberish, and double Dutchdemonstrate our apprehension of certain foreign languages as impenetrable glossolalia.

It is this assumption of the otherness and obscurity of the foreign in language that Eduard Stoklosinski examines in Another View: Tracing the Foreign in Literary Translation.

more here.