The Eternally Existing, Self-Reproducing, Frequently Puzzling Inflationary Universe

Sean Carroll in Cosmic Variance:

LandscapeMy inaugural column for Discover discussed the lighting-rod topic of the inflationary multiverse. But there’s only so much you can cover in 1500 words, and there are a number of foundational issues regarding inflation that are keeping cosmologists up at night these days. We have a guest post or two coming up that will highlight some of these issues, so I thought it would be useful to lay a little groundwork. (Post title paraphrased from Andrei Linde.)

This summer I helped organize a conference at the Perimeter Institute on Challenges for Early Universe Cosmology. The talks are online here — have a look, there are a number of really good ones, by the established giants of the field as well as by hungry young up-and-comers. There was also one by me, which starts out okay but got a little rushed at the end.

What kinds of challenges for early universe cosmology are we talking about? Paul Steinhardt pointed out an interesting sociological fact: twenty years ago, you had a coterie of theoretical early-universe cosmologists who had come from a particle/field-theory background, almost all of whom thought that the inflationary universe scenario was the right answer to our problems. (For an intro to inflation, see this paper by Alan Guth, or lecture 5 here.) Meanwhile, you had a bunch of working observational astrophysicists, who didn’t see any evidence for a flat universe (as inflation predicts) and weren’t sure there were any other observational predictions, and were consequently extremely skeptical. Nowadays, on the other hand, cosmologists who work closely with data (collecting it or analyzing it) tend to take for granted that inflation is right, and talk about constraining its parameters to ever-higher precision. Among the more abstract theorists, however, doubt has begun to creep in. Inflation, for all its virtues, has some skeletons in the closet. Either we have to exterminate the skeletons, or get a new closet.

More here.

A brilliant and exhilarating and profoundly eccentric book

David Albert in the New York Times:

ScreenHunter_01 Nov. 15 18.55David Deutsch’s “Beginning of Infinity” is a brilliant and exhilarating and profoundly eccentric book. It’s about everything: art, science, philosophy, history, politics, evil, death, the future, infinity, bugs, thumbs, what have you. And the business of giving it anything like the attention it deserves, in the small space allotted here, is out of the question. But I will do what I can.

It hardly seems worth saying (to begin with) that the chutzpah of this guy is almost beyond belief, and that any book with these sorts of ambitions is necessarily, in some overall sense, a failure, or a fraud, or a joke, or madness. But Deutsch (who is famous, among other reasons, for his pioneering contributions to the field of quantum computation) is so smart, and so strange, and so creative, and so inexhaustibly curious, and so vividly intellectually alive, that it is a distinct privilege, notwithstanding everything, to spend time in his head. He writes as if what he is giving us amounts to a tight, grand, cumulative system of ideas — something of almost mathematical rigor — but the reader will do much better to approach this book with the assurance that nothing like that actually turns out to be the case. I like to think of it as more akin to great, wide, learned, meandering conversation — something that belongs to the genre of, say, Robert Burton’s “Anatomy of Melancholy” — never dull, often startling and fantastic and beautiful, often at odds with itself, sometimes distasteful, sometimes unintentionally hilarious, sometimes (even, maybe, secondarily) true.

More here.

our zombies, ourselves

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The battle between Spitz and the zombies is a contest between hollow vessels on both sides, which is one reason why Zone One ultimately feels like such a sad book. Not that Whitehead — who can be a very funny writer — passes up any opportunities for a little zombie humor. A pop psychologist coins the syndrome PASD (or “post-apocalyptic stress disorder”) to explain the jitters people feel about the new dispensation, and the government hands out helpful pamphlets on how to cope with it; of course everyone on earth is grappling with their PASD, or past. And few writers could combine horror and fashion criticism as effortlessly as Whitehead does, when explaining how to distinguish between zombies and humans from a distance: “Only a human cursed with the burden of free will would wear a poncho.” Still, the overall tone is melancholic, even elegiac. Why doesn’t our hero seek to get out of Zone One, give up the sweeper lifestyle, try to get somewhere safe? The impulse to escape is utterly absent from these pages, presumably because New York City is still, for Mark Spitz as for Whitehead, the center of the world, and the place he always wanted to live. After all, New York is never what we dreamed it was going to be when we were young, and the zombie apocalypse is just another teacher of that hard lesson.

more from Alix Ohlin at the LA Review of Books here.

Night Thoughts of a Baffled Humanist

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What are we doing here? We may never know. If a solar storm should burn off the peculiar damp that clings to this planet, this would be a very small change—no change at all in cosmic terms, which apparently are based on averages. The universe is lifeless now and will be lifeless then, so negligible is our presence in it. What about us was of interest, if we imagine looking at ourselves in retrospect? That we made civilizations, or that we drove them to the ground, reduced them to rubble? I won’t pretend that this is a real question. We make wealth, and we destroy it. Our wealth is finally neither more nor less than human well-being. There is no necessary hypothesis; there is no value but what we value. The great temptation of money is that it seems to give us tokens, markers, by which things and people can be truly said to succeed or fail. The illusion that value inheres in it has vigorously survived a recent proof of its evanescence, in fact its utter dependency on our faith in its value. It has a placebo effect more predictably than it ought to, seeming to satisfy a need to know how value is discovered, or created, or conveyed, or preserved. It is human nature to want to know this. But, whatever else we might say about human nature, we can say it aligns most inexactly with the universe. In this moment the habit of aggressive fear and the zeal for austerity have become a binary system, each intensifying the force of the other as they become a single phenomenon. In the way of the cosmically accidental, this near-fusion has occurred at a point in time when the merely possible took on the character of the inevitable.

more from Marilynne Robinson at The Nation here.

shades of grey

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How many secrets can one person have, especially a person who has made a living out of spilling them, ruthlessly mining his own experience for autobiographical monologues that brought him no small amount of fame and fortune? Not many, it would seem. But if you’re Spalding Gray, the writer and performer of self-revealing one-man performances such as Swimming to Cambodia and Gray’s Anatomy, you can have private secrets within performed secrets, unspoken confessions behind the public ones. That, at any rate, is what emerges from the pages of Gray’s journals, a document of wrenching and exhilarating honesty, shot through with self-hatred but also with unremitting humor and several shades of irony. Once you start reading, the book draws you in with its dire, lunatic brand of introspection, almost as though you were listening to an emergency phone call from a close friend who can’t, or won’t, hang up until he’s done detailing all the reasons why he’s a fraud and why his life sucks and why it’s high time he put an end to it.

more from Daphne Merkin at Bookforum here.

A Pocket Philosophical Dictionary by Voltaire

From Guardian:

A-Pocket-Philosophical-DictiIn three years it will be the 250th anniversary of the publication of this incendiary work. I hope suitable festivities are being planned. I cannot think of any political work this old which survives modern scrutiny so well – not so much because it contains essential truths, but because it is still such fun to read. Dangerous fun, that is: it's like being in the presence of a particularly enraged alternative comedian, an Enlightenment Bill Hicks, perhaps. Readers opening the first edition and reading the first entry – on Abraham – would have raised an eyebrow at this: “The fact is that the seed of Ishmael has been infinitely more favoured by God than the seed of Jacob. Both races have in turn produced thieves; but the Arab thieves have been prodigiously superior to the Jewish thieves.” Any reader consoling him- or herself at the time with the thought that this is just antisemitism of a particularly broad kind is not reading properly: this is a declaration, as it were, that nothing in the following pages is going to be treated as sacred. Everything is about to get a good kicking, and irony will be piled upon irony.

Voltaire was pushing 70 when he wrote it, but he wasn't getting soft in his old age. Rather the contrary. He felt not only that time was running out, but that he could really let rip without too much fear of the consequences. Not that he was completely reckless: for as long as possible, he maintained the fiction that he was not the work's author. And with good reason: the book was instantly placed on the Vatican's list of banned books, where it remained until the list itself was withdrawn in 1966; and in 1776, two years after publication, a young man from Picardy, the chevalier de La Barre, was accused of various anti-religious acts, and his possession of Voltaire's Dictionary was a factor in his guilty sentence. Punishment: to have his tongue torn out, be beheaded, and burned at the stake, with a copy of the offensive book tossed on to the pyre for good measure (pour encourager les autres, you might say).

More here.

Oh, the Places We Could Go

From The New York Times:

EarthThe high point was when I got to bomb Mars. In science fiction, wars between the Earth and her interplanetary colonies are a staple of the far future, but this was not that. Before we go to war with Mars, there has to be somebody living there to fight. Toward the end of the exhibition “Beyond Planet Earth: The Future of Space Exploration,” which opens at the American Museum of Natural History on Saturday, a visitor is confronted with a chance to help make the red planet, currently a frozen desert, livable.

Using an interactive screen the size and shape of a Ping-Pong table, you can play God and direct the future evolution of Mars. The first task is to thicken its atmosphere and warm it up by liberating carbon dioxide, a greenhouse gas, from its frozen soil and ice caps. You can bomb the planet — although, to my disappointment, you can’t aim the bombs — or you can spray black dust on the ice caps to make them absorb sunlight and melt faster. Both of these made me feel like a delightfully naughty 6-year-old boy. You can even build factories with tall smokestacks billowing exhaust. “I’m polluting Mars,” I exclaimed, eliciting sage chuckles from the museum staff members nearby. After all, we’ve been practicing that for 500 years on Earth. The idea of the space program as a museum show seemed wildly and gloomily appropriate when I first heard about it. We think of museums as being for old dead things, and the space program, at least the American space program, seems ready for its own diorama as the space shuttle shuts down, the Moon landings recede into ancient history, and space science is slowly dismantled by a prairie fire of budget cutting and wild cost overruns in the few programs that are left.

More here.

Monday, November 14, 2011

Sunday, November 13, 2011

Reclaiming the Republic: An Interview with Lawrence Lessig

Lawrence Lessig’s latest book, , represents both a departure from his previous work on intellectual property and an entrance into the world of political activism. He argues that Congress has become so corrupted by moneyed interests and has so undermined the public trust that our very republic is at risk. He seeks nothing less than a complete overhaul of our campaign-finance system.

David V. Johnson in the Boston Review:

Lessig_36_6_lobbyistDavid Johnson: Republic, Lost is about institutional corruption in Congress. In reading it, one impression I had is that it’s about so much more than just Congress. It’s really about our society. There are so many institutions that are suffering from the same corruption from moneyed interests.

Lawrence Lessig: Yes, and that’s not an accident. I run the Edmond J. Safra Center for Ethics at Harvard; we have launched a five-year research project focusing on institutional corruption generally. So this problem I describe in the context of Congress is just a particular instance of a more general dynamic in accounting, financial services, healthcare, academics, the media—you can pick your field—and we can describe a similar dynamic of corrupting influences that we’ve allowed to seep into the institution that distract it from what we think the institution is for.

DJ: If this is such a broad-based phenomenon, why isn’t it more obvious to people?

LL: Well, I actually think that outside of the academy it is obvious, but it’s not so obvious that it triggers people to react. I think of a metaphor to certain diseases like sleeping sickness, which the body just can never muster a sufficient immune response, and therefore it slowly brings the body down; that might be the case here.

More here.

Sunday Poem

A Rainy Morning

A young woman in a wheelchair,
wearing a black nylon poncho spattered with rain,
is pushing herself through the morning.
You have seen how pianists
sometimes bend forward to strike the keys,
then lift their hands, draw back to rest,
then lean again to strike just as the chord fades.
Such is the way this woman
strikes at the wheels, then lifts her long white fingers,
letting them float, then bends again to strike
just as the chair slows, as if into a silence.
So expertly she plays the chords
of this difficult music she has mastered,
her wet face beautiful in its concentration,
while the wind turns the pages of rain.

by Ted Kooser
from Delights and Shadows
Copper Canyon Press, 2004

Stephen Fry, Martin Amis, Salman Rushdie, Sean Penn and others unite to celebrate Hitchens

George Eaton in The New Statesman:

ScreenHunter_13 Nov. 13 11.13Richard Dawkins, Hitchens's fellow anti-theist, appeared on stage with Fry in London, and Martin Amis, his dearest friend, appeared via video link from New York, as did James Fenton and Salman Rushdie. The line-up also included actor Sean Penn (who Hitchens enjoys pool games with), former Harper's editor Lewis Lapham and novelist Christopher Buckley, son of the late conservative intellectual (whether there can be such a thing is a subject for another occasion) William F. Buckley, whom Hitchens often debated on US TV show Firing Line. It felt like a hyper-intelligent version of Question Time.

Wreathed in smoke clouds and looking as if he had just climbed out of bed, Penn (beamed in from LA) opened proceedings, discussing the political significance of The Trial of Henry Kissinger – Hitchens's account of the former US Secretary of State's “one-man rolling crime wave” – until the satellite link failed (“God damn you Google!” cried Fry). Regaining his composure, Fry welcomed Dawkins on stage. Dawkins and Hitchens are often spoken of as one entity (Terry Eagleton christened them “Ditchkins” in his 2009 polemic Reason, Faith and Revolution) but the former made an important distinction between their approaches. While Dawkins's hostility to religion is born of his commitment to science and free inquiry, Hitchens's reflects his moral outrage at what Dawkins called “a tyrannical God figure” and what Hitchens has described as a “celestial dictatorship”. In this regard, Hitchens's anti-theism is merely an extension of his anti-totalitarianism.

It was Buckley, who spoke recently of how Hitchens composed a Slate column in 20 minutes in his presence (as the late Anthony Howard, a former editor of the NS, told me last year, Hitchens can write at a speed that most people talk), who appeared next, recalling the moment Barbra Streisand “caught fire” at the Vanity Fair party hosted by Hitchens following the White House Correspondents' Dinner.

More here. You can buy and watch a video of the entire evening here.

Salman Rushdie’s dad’s humiliation in London

Danish Khan in the Pune Mirror:

Cov012The eyes have the same intensity as his famously broody-eyed writer son but Salman Rushdie’s father Anis Ahmed Rushdie had an almost diametrically opposite reception in the United Kingdom from his illustrious son.

An investigation by this reporter reveals that unlike Sir Salman, knighted by Queen Elizabeth in 2007, his father Anis Ahmed Rushdie was shamed and nearly prosecuted in the UK in 1935 after it was revealed that his birth record details had been fudged to allow him to appear for the elite Indian Civil Service.

Despite his protestations of innocence and cultural misunderstanding Rushdie senior was dismissed from the ICS on this ground.

After graduating from Cambridge University, like his son did later, Anis Rushdie appeared for the ICS in 1932 and cleared the exam. But following inexplicable reasons he was not selected in 1932. He reappeared the next year and was ranked 4th overall. His troubles began when he was sent to England on the customary two-year probation and the British began scrutinising his records.

More here.

What next: A Sunni bomb?

Pervez Hoodbhoy in Bulletin of the Atomic Scientists:

HoodbhoyThe Islamic Republic of Iran stands at the threshold to the bomb. In 2010 it had more than enough low-enriched uranium (some 2,152 kilograms) to make its first bomb's worth of weapons-grade uranium. The LEU would have become highly enriched uranium in roughly 10 weeks had it been fed into the 4,186 centrifuges then operating. Thousands of other centrifuges are also known to be operating at the Natanz secret nuclear facility. Even if Iran had not received a bomb design from the so-called father of Pakistan's nuclear weapons program, A. Q. Khan, the six-decade-old physics of implosion devices would be no mystery to Tehran's sophisticated nuclear scientists. Iran now awaits only a political decision to make the bomb.

What if Iran chooses to cross the threshold? Among other likely consequences, an Iranian bomb would be a powerful stimulus pushing the Kingdom of Saudi Arabia to follow and seek the first Sunni bomb. The first, yes. Though also a Sunni-majority state, Pakistan built its bomb not for Islamic reasons, but to counter India's nuclear arsenal. In fact, Shiite-majority Iran enthusiastically hailed Pakistan's 1998 test of an atomic device. Clearly, the Iranian leadership did not see Pakistan's bomb as a threat.

But Sunni Saudi Arabia sees Shia Iran as its primary enemy. The two are bitter rivals that, post-Iranian revolution, have vied for influence in the Muslim world. Saudi Arabia has the world's largest petroleum reserves, Iran the second. Saudi Arabia is the biggest buyer of advanced US weapons and is run by expatriates. It is America's golden goose, protected by US military might. But fiercely nationalist Iran expelled US oil companies after the revolution and is building its own scientific base.

More here.

The Brontë sisters are always our contemporaries

From The Telegraph:

Wuthering-Heights_2053966cAs Ezra Pound said, literature is news that stays news. The great classics mutate to fit our preoccupations, revealing aspects of themselves that previous generations never suspected. Writers long dead come in and out of favour; reputations rise and fall. Who would have thought, in 1815, that the novelist now read and adored across the world would be, not Sir Walter Scott, but Jane Austen? And who, among the first readers of those astonishing books Jane Eyre and Wuthering Heights, would even begin to recognise the versions of them that 21st-century readers hold dear? The Brontës have transformed themselves over a century and a half, even if the ongoing fascination perhaps says more about us than it does about them. A tiny teenage manuscript of Charlotte’s is about to be sold, its value estimated at between £200,000 and £300,000, which is as good a measure of enthusiasm as any. And the release of new film versions of her and her sister Emily’s best-known books – Cary Fukanaga’s Jane Eyre and Andrea Arnold’s Wuthering Heights – offers an opportunity to think about how we have remade these books in our own image.

They were not always equally popular. Jane Eyre was an immediate bestseller, its vivid theatrical style making it a favourite to be turned into stage melodrama – as happened within a year of its publication in 1847. It has been filmed 20 times, from the very earliest days of the cinema. Wuthering Heights was slower to make its way. Although it, too, made a tremendous impact on publication, it was always regarded as very strong meat, one for the intelligentsia that would be resistant to dramatisation. Probably only after the two marvellous screen adaptations of the late 1930s – the Jane Eyre with Orson Welles as Rochester, and Laurence Olivier’s splendid turn as Heathcliff in Wuthering Heights – did the two attain popular parity.

But what do we think of them now?

More here.

Gloria Steinem: ‘I think we need to get much angrier’

Rachel Cooke in Guardian:

Gloria-steinem-007The last person to interview Gloria Steinem for the Observer was Martin Amis, in 1984. He waited for her at the offices of Ms, the magazine that she co-founded in 1972 – “Pleasant though I found it, I was also aware of my otherness, my testosterone, among all this female calm” – and then they headed out together to Suffolk County Community College, Long Island, where Gloria was, as ever, to address a group of students. To read this piece now is excruciatingly embarrassing, especially given Amis's more recent conversion to what he likes to call the “gynocracy”. Feminism? From the male point of view, he said back then, the reparations look to be alarmingly steep. As for Steinem herself, she is “the least frightening” kind of feminist, being possessed of – prepare to be amazed! – both a sense of humour and good looks. She was, he wrote, relief slowly blooming, “nice, and friendly, and feminine… the long hair is expertly layered, the long fingers expertly manicured. Fifty this year, Ms Steinem is unashamedly glamorous.”

A quarter of a century later, and Steinem is still glamorous: wildly so. But the point is surely that this glamour derives, just as it always did, as much from her extraordinary career – in other words, from her brain – as from her appearance (Mart unaccountably failed to spot this). At 77, she remains tiny of waist and big of hair – and, yes, the nails are as smooth and as shiny as a credit card – but what strikes you most, at least at first, is how preoccupied she seems. She is so busy. It has taken me the best part of two years to bag this slot with her, and even now I'm here, I'm uncertain how much time, in the end, she will have to spare. Does she remember who I work for? I can't tell. I have the impression that she believes I live in New York – and sure enough, when I eventually tell her that I've flown in from London, she looks first amazed, and then, quickly, solicitous. (She might be distracted, but Steinem is also famously nice.)

More here.

Saturday, November 12, 2011

Daniel Kahneman: The King of Human Error

Michael Lewis in Vanity Fair:

ScreenHunter_12 Nov. 12 17.36We’re obviously all at the mercy of forces we only dimly perceive and events over which we have no control, but it’s still unsettling to discover that there are people out there—human beings of whose existence you are totally oblivious—who have effectively toyed with your life. I had that feeling soon after I published Moneyball. The book was ostensibly about a cash-strapped major-league baseball team, the Oakland A’s, whose general manager, Billy Beane, had realized that baseball players were sometimes misunderstood by baseball professionals, and found new and better ways to value them. The book attracted the attention of a pair of Chicago scholars, an economist named Richard Thaler and a law professor named Cass Sunstein (now a senior official in the Obama White House). “Why do professional baseball executives, many of whom have spent their lives in the game, make so many colossal mistakes?” they asked in their review in The New Republic. “They are paid well, and they are specialists. They have every incentive to evaluate talent correctly. So why do they blunder?” My book clearly lacked a satisfying answer to that question. It pointed out that when baseball experts evaluated baseball players their judgment could be clouded by their prejudices and preconceptions—but why? I’d stumbled upon a mystery, the book reviewers noted, and I’d failed not merely to solve it but also to see that others already had done so.

More here.