An almost psychotically optimistic hope: Paulos on Penrose

Redes23marzo05_1John Allen Paulos reviews The Road to Reality: A Complete Guide to the Laws of the Universe by Roger Penrose, in his monthly Who’s Counting column at ABC News:

The first 400 pages of “The Road to Reality” sketch the mathematics needed to understand the physics of the following 700 pages. Like many mathematicians, Penrose is an avowed Platonist who believes that mathematical entities such as pi, infinite cardinal numbers, and the Mandelbrot set are simply “out there” and have an objective existence independent of us.

PenroseDeveloping his mathematical philosophy a bit with some interesting speculations about the relations between the mathematical, physical, and mental worlds (but never descending to sappy theology), he very soon gets into the mathematical nitty-gritty. He expounds on Dedekind cuts, conformal mappings, Riemann surfaces, Fourier transforms, Grassmann products, tensors, Lie algebras, symmetry groups, covariant derivatives, and fiber bundles among many other notions.

As suggested, the level of exposition and the topics covered make me wonder about the intended audience. Penrose writes that he’d like the book to be accessible to those who struggled with fractions in school, but this seems an almost psychotically optimistic hope. This is especially so because Penrose’s approach to so many topics is so clever and novel.

More here.



Summer Reading

From The Edge:

Summerbooksmosiac It’s Summer, time to lie on the beach and relax with a wonderful book. Here’s a selection of 40 recently published great Summer reads from the Edge community. Read Mandelbrot on “multifractals”, Dawkins on “true heredity”, Penrose on “Clifford bundles”, Marcus on “synaptic strengthening“, Searle on “biological naturalism”, Leroi on “intersex”, Pinker on “biological nature”, Garreau on “the telekinetic monkey”, Seligman on “avoidant people”, Randall on “extra dimensions”, Kurzweil on “the singularity”, Damasio on “neurotransmitter nuclei”, Greene on “quantum weirdness”, Dennett on the “Zombic Hunch”, Diamond on anthropology to zoology, plus many others. You can’t go wrong.

More here.

Parkinson’s Treatment Linked to Compulsive Gambling

From Scientific American:

Gambling Researchers have identified a strange side effect to a treatment for Parkinson’s disease: excessive gambling. Some patients taking medications known as dopamine agonists developed the problem within three months of starting treatment, even though they had previously gambled only occasionally or never at all. All of the patients in the new study were using dopamine agonists, compounds that mimic the behavior of the neurotransmitter in the brain, as part of their treatment regimes. The researchers report in the current issue of the Archives of Neurology that their newly-developed gambling problems cost patients upwards of $100,000 and, in the case of one patient, led to the break-up of her marriage.

More here.

Wednesday, July 13, 2005

It’s Tom Friedman’s problem

Good post by Lindsay Beyerstein at Majikthise:

If It’s a Muslim Problem, It Needs a Muslim Solution, opines Tom Friedman.

The Muslim village has been derelict in condemning the madness of jihadist attacks. When Salman Rushdie wrote a controversial novel involving the prophet Muhammad, he was sentenced to death by the leader of Iran. To this day – to this day – no major Muslim cleric or religious body has ever issued a fatwa condemning Osama bin Laden.

For that, Juan Cole smites Friedman righteously Friedman Wrong About Muslims Again And the Amman Statement on Ecumenism.

It’s as if Friedman’s latest editorial spun out of control in a freak rhetorical accident. In the course of lecturing us about tolerance, he somehow ended up saying that all Muslims are complicit in terrorism.

Making Sense of The Daily Show’s new set

In Slate, Dana Stevens looks at changes to the set of The Daily Show, a recent topic of conversation among many I know.

“After a week’s hiatus, The Daily Show with Jon Stewart reopened last night in new digs, a few blocks west of its former location in midtown Manhattan. To judge by Stephen Colbert’s tour of the old Daily Show headquarters, which appears as an extra on the new Indecision 2004 DVD, the backstage staff was clearly in need of some spruced-up quarters in which to write and produce the show. But was I the only viewer disturbed by the more-than-cosmetic changes to the look of the studio itself? What is The Daily Show trying to say with its new set?”

Meeting Nature’s Needs

Demaray3

Based on what we know about the new needs of these animals in their current environment, the Hand Up Project proposes to manufacture alternative forms of housing, specifically designed for use by land hermit crabs, out of plastic. This solution offers multiple benefits. Not only will the project afford the animal badly needed additional forms of shelter, but we also contend that, by utilizing current technology, we may now be better equipped to meet the needs of this life-form than nature ever has.

more about the hand up project here.

Henri-Lévy as Tocqueville

The following project by The Atlantic seems like it may be very intriguing. The actual interview between Brooks andLevy
Henri-Lévy is only available to online subscribers but the description of what they’re doing is this:

In the May Atlantic the first of several installments of Bernard-Henri Lévy’s “In the Footsteps of Tocqueville” appears—a travelogue in which Lévy, a renowned author and public intellectual in France, describes his journey throughout this country, visiting various cities, historic sites, landmarks, malls, and churches, and commenting on aspects of our society and culture that only an outsider could perceive. The aim of this long-form piece is, in a sense, to attempt to replicate what the French author Alexis de Tocqueville accomplished in the nineteenth century with his book Democracy in America. Lévy’s Atlantic articles will eventually be collected and published by Random House, along with several previously unpublished chapters.

In New Jersey, Blog Carnival Is WWWeird

Peter Applebome in the New York Times:

In a perfect world, the Carnival of the New Jersey Bloggers would be a proper carnival you could take your kids to, with cold lemonade at the Parkway Rest Stop, sword swallowing by Mister Snitch!, dunk-the-blogger booth at Mary’s Lame Attempt at Fame, house of horrors at the Bad Hair Blog and the rest.

But then who in New Jersey contemplates a perfect world? So, absent perfection, for another glimpse of New Jersey Ascendant, check out the weekly assemblage of all things Jersey that has taken on a life of its own on the Internet.

For those with too much time on their hands, a blog carnival is a collection of Web log entries, usually on a shared topic – politics, food, poker, etc. The most famous of which is the Carnival of the Vanities, which has become the Ringling Brothers and Barnum & Bailey of blog carnivals.

More here.  [Thanks to Husain Naqvi.]

The Bling King

William Grimes reviews The Essence of Style: How the French Invented High Fashion, Fine Food, Chic Cafes, Style, Sophistication and Glamour by Joan DeJean, in the New York Times:

Louis_14_1In “The Essence of Style,” her effervescent account of the birth of French chic, Joan DeJean returns, again and again, to the idea that virtually everything associated with the high life today can be traced back to one man, whose tastes and desires transformed France into an international luxury brand. Today, the diamond reigns supreme among gemstones. But it was not always so. Throughout the Renaissance, it was the pearl that symbolized wealth and beauty, while the diamond, in treatises of the time, ranked only 18th in importance. In the 1660’s, however, Louis developed a taste for the colorless stone that a French jeweler named Jean-Baptiste Tavernier began bringing back from India. In 1669, the king spent the equivalent of $75 million on diamonds, propelling the stone to the pre-eminent position it has enjoyed ever since, and establishing Paris as the world center for fine jewelry. The Sun King was also the bling king.

More here.

Andy Warhol, presented with Spielbergian intensity

From The Village Voice:

Warhol_1 Triggering interpretations that fence personal obsessions with death, sensationalism, and our preoccupation with “terror,” a theater of the macabre, Americana-style, swings into motion with the pairing of “Skull” paintings (1976) against the Washington Monuments. Ricocheting in a visual sight line from the front to the back of the galleries and activating the museum’s enormous scale, the skulls greet us like enormous sentries and draw us through the permanent installation of the mysterious “Shadow” paintings (1978–79). They pull us past Louise Lawler’s photographs of Warhol works and deliver us to a rear gallery they share with two oversize “Last Supper” canvases (1986), beyond which are a stash of six hardcore “Disaster” paintings (1963–64). Abetted by the towering cartoon monotony of the Washington Monument, the trail of skulls, and traces of Jesus Christ, the horrific spectacle of multiple real-life death scenes (plus one bloody birth scene) catalyze the Wow! moment and fuel momentary amnesia. Has Warhol ever been presented with such Spielbergian intensity?

More here.

The Next Pandemic?

From Foreign Affairs:

International health officials are warning that a deadly avian influenza virus may soon spread rapidly, overwhelming unprepared health systems in rich and poor countries alike. If the virus mutates to become easily transmittable among humans, the death toll of the resulting global pandemic could number in the millions.

As a call to action, the July/August issue of Foreign Affairs includes a special set of articles written by Laurie Garrett of the Council on Foreign Relations, Dr. Michael Osterholm of the University of Minnesota and the Department of Homeland Security, and Drs. William Karesh and Robert Cook of the Wildlife Conservation Society. Special condensed versions of the essays by Garrett and Osterholm, along with a Web-only Q & A with Garrett, are available on the Foreign Affairs website today.

Nature magazine is providing additional information on the medical and scientific aspects of the H5N1 virus. The coverage of both magazines is being coordinated to assist efforts of the Royal Institution World Science Assembly to spur preparations by governments and international organizations.

A lot more here.

ALL THE OIL IN CHINA?

James Surowiecki in The New Yorker:

When the China National Offshore Oil Corporation, or cnooc, made an $18.5-billion bid for the American oil company Unocal two weeks ago, topping a previous offer of $16.5 billion from Chevron, a political storm was inevitable. The Chinese government owns seventy per cent of cnooc (pronounced “see-nook”), and, for many in Washington, China is a natural enemy in the making. Representative Joe Barton said that the deal “poses a clear threat to the energy and national security of the United States.” Representative Richard Pombo prophesied “disastrous consequences.” A host of congressmen argued that the Committee on Foreign Investments—a government body that vets corporate acquisitions by foreign companies with an eye toward national security—should investigate the deal.

More here.

The little-known links in the chain to the bomb

Elizabeth Svoboda reviews Before the Fallout: From Marie Curie to Hiroshima by Diana Preston, in the San Francisco Chronicle:

The deliberations of the Manhattan Project’s kingpins at Los Alamos, N.M., have been hashed out ad infinitum in classic works such as Richard Rhodes’ “The Making of the Atomic Bomb.” Preston’s book escapes comparison with such literary behemoths by focusing on the key roles of lesser-known personalities. She proposes that for every Oppenheimer, Einstein and Teller — larger-than- life caricatures in the cultural lexicon — there is a bit player, equally integral to the drama, whose story remains largely unknown.

Among Preston’s cast of atomic Rosencrantzes and Guildensterns, German physicist Werner Heisenberg is most deftly portrayed. Though eager for Germany to win World War II so the Allies would not treat it “the way the Romans had treated Carthage,” Heisenberg never belonged to the Nazi party. Preston raises the intriguing possibility that he and others assigned to the German nuclear weapons project “had misgivings about producing a bomb, which may have unconsciously inhibited their work.”

More here.

Sperm-free sex keeps hens happily faithful

Anna Gosline in New Scientist:

Possessive cockerels use fake sex to keep their hens faithful. By merely mounting females – without bothering to waste precious sperm – cocks ensure their partners will not go looking for male competitors to fertilise them, a new study suggests. The finding may explain why males of many species – from insects to mammals – engage in seemingly meaningless sperm-free sex.

“Copulations that appear to be successful, but with no semen transferred, are almost ubiquitous,” says Tommaso Pizzari at the University of Oxford, UK, co-author of the study. “It suggests that this behaviour may be rather more than an accident or a by-product of males running out of sperm.”

While sperm was always thought of as a cheaper investment than eggs, in the past few years, researchers have begun to realise that sperm also carries a hefty biological price tag. In 2003, Pizzari and his colleagues showed that male chickens allocated their precious seed according to the likelihood of fathering children. Unfamiliar females always received a fulsome dose, while hens with which the cock had already mated several times ended up receiving little more than ruffled feathers.

More here.

Deep Insight: Comet Buster Reveals Dusty Secrets

Michael Schirber at Space.com:

050712_deep_impact_emit_02Now that the fireworks are over, scientists are sorting through what was learned from the Deep Impact collision with Comet Tempel 1 on July 4.

“It looks like we got a pretty good pop,” Pete Schultz from Brown University told SPACE.com yesterday.

Although Deep Impact’s 820-pound impactor struck the comet’s surface at approximately a 25-degree angle, it was still able to kick up an impressive plume of dust.   

The preliminary images and data indicate the comet has a cratered surface that is too soft to be made of ice, once thought to be the main component of comets.  The impactor-induced crater was not visible directly due to the thick cloud of dust, but researchers estimate it to be at least 330 feet (100 meters) wide.

“The major surprise was the opacity of the plume the impactor created and the light it gave off,” said Michael A’Hearn of the University of Maryland. “That suggests the dust excavated from the comet’s surface was extremely fine, more like talcum powder than beach sand.”

More here.

From Srebrenica to Baghdad

Christopher Hitchens in Slate:

Ten years since the hecatomb of Srebrenica … surely a decade cannot have passed so quickly? It really feels to me like yesterday. I can hear Susan Sontag’s exact tone of voice as she described being in a ministerial office in Sarajevo when the mayor of Srebrenica got through on a bad line to say, “This is goodbye.” He did not mean au revoir. Ronald Steel is one of the most gentle and humane liberals I have ever met, but I can still see his next-day’s op-ed in the New York Times, announcing that the fall of the “safe havens” was “a blessing in disguise,” since it might force the Bosnians to sue for peace. I can remember the red rage in which I wrote a letter to the Times, saying that a mass murder was a pretty effective disguise. And the sickening news, day by day, of the routine and organized torture and slaughter, and then the crude interment of the butchered cadavers, ploughed under like black plastic bags of refuse. I have had my differences with Mark Danner since that time, but if you wish to relive the episode (and you should want to do so) you really must look up his brilliant forensic inquiry in successive issues of the New York Review of Books.

Above all, what I remember is the sense of shame…

More here.

Tuesday, July 12, 2005

Planarity Flash Game

Eszter at Crooked Timber:

I have accumulated quite a list of fun sites. So far I have protected CT readers by only posting these occasionally. But I have so many now that I think I am going to make it a weekly feature. As additional warning, I have created a little button to signal these posts. The point of the button is to note: you have been warned, I take no responsibility for the amount of time you end up wasting due to clicking on these links.

Planarity Flash Game

Your job is to reposition the nodes so the links do not overlap.

Go ahead, try it.  [Thanks a lot, Robin!]

Komar Lives

Picksimg

Vitaly Komar’s first solo exhibition, after decades as half of the celebrated duo Komar and Melamid, elegantly proposes a spiritual truce between members of different faiths and beliefs. The holy day for Muslims is Friday, for Jews, Saturday, and for Christians, Sunday. Thus Komar calls for a more culturally inclusive (and temporally expansive) definition of “weekend,” undermining traditions of work that have most people behind desks or on their feet for forty-plus hours per week. In support of his proposition for a three-day weekend, he shows stained glass, paintings, and several montages.

more here.

Vietnamese Writer Won’t Be Silenced

11writ

Wearing an elegant tweed jacket and sipping fruit juice in a Left Bank cafe here, the writer Duong Thu Huong hardly cuts a threatening figure. But Ms. Huong, 58, evidently does in her native Vietnam, where she has spent time in jail, has seen her books banned and for 11 years was denied a passport to travel abroad.

Her sins, it seems, are many. Her novels dissecting life under one of the last Communist regimes are published and well received in the West. She is a former Communist Party member who was expelled as a traitor. And above all, she is a dissident – a “dissident whore,” one party leader said – who refused to be silenced even after spending eight months in prison in 1991.

more here.

Reports from Gleneagles

The terrorist bombings in London displaced attention on the G8 and its discussions on poverty and debt relief in Africa.  Although, we were unlikely to hear any sustained account of how argicultural subsidies in the West depress food prices in the Third World to levels where local farmers cannot compete, thereby lose their livelihoods, and fall into poverty.  Of course, given the fact that rural voting blocks are powerful in the United States, France and elsewhere, ending subsidies may be an enormous, if not wholly insurmountable hurdle.  Focusing on aid and debt relief may be a second best solution.

Michael Holman offers some thoughts on the meeting at Gleneagles.

“Is Africa better off after Gleneagles? The continent’s profile is higher, debate about its crisis is better informed and more vigorous. That can only be a good thing. And yes, there will be more money, though that is not necessarily beneficial – and we need to read the fine print that accompanies this largesse. Trade reform, which is vital to Africa’s recovery, will have to wait until the WTO round in Hong Kong in December. So it is too early for a confident assessment of what after all is a process, and not an event. Of just one thing do I feel certain: the politicians (Tony Blair and Gordon Brown) outmanoeuvred the pop stars (Bob Geldof and Bono). . .

By the end of the summit, Geldof and Bono were defending an outcome that, whatever its merits, clearly fell short of their original demands.”

(Read the other commentaries here.)