Thursday, July 31, 2008

WSJ compensation survey

The WSJ has posted some interesting compensation data which can be sorted by college and degree type. The data covers people less than 5 years out of school and more than 10 years out ("mid-career"), in all cases excluding those that earned advanced degrees -- so that the outcomes are most sensitive to the undergraduate background of the respondents. Note you can click the column heading to sort by that variable (starting salary, 75 percentile mid-career salary, etc.).

There's also an accompanying article. The author notes that schools (Ivies) at which a large fraction of students head into finance tend to have the highest starting and mid-career averages. Engineers have high starting salaries but not as much appreciation.

A social scientist can now regress the salaries on avg SAT and school / major to calculate the economic "value add" for a particular major or institution. (See UT Austin data here.) A significant confound is that people who *do* get advanced degrees would not appear in this data. (Almost half of all Caltech undergrads get PhDs and probably well over half get other advanced degrees.)

Some random results:

Caltech grads had the highest median starting salaries at $75k; by midcareer Dartmouth is number one with median compensation of $134k (MIT $126k, Caltech $123k).

Salaries by degree | starting | 10th-90th percentile midcareer range

Physics | $50k | $56k -- $178k
EE | $60k | $69k -- $168k
English | $38k | $33k -- $136k
Economics | $50k | $50k -- $210k
Philosophy | $40k | $35k -- $168

• Survey respondents included two sets of U.S. bachelor's degree graduates: Full-time workers with 5.5 years of experience or less and full-time employees with 10 or more years of experience.

• The survey excluded respondents who reported having advanced degrees, including M.B.A.s, M.D.s and J.D.s. Self-employed, project-based, and contract employees were also not included.

• Salary included annual cash compensation, including base salary or hourly wages, combined with commissions, bonuses, profit sharing and other forms of cash earnings.

Monday, July 28, 2008

Still no mark to market

Mortgage-backed assets with face value of $30.6B were just sold by Merrill for $6.7B.

1) obviously, this reflects huge losses and perhaps forward looking expectations of a very high default rate on the underlying mortgages (can't tell unless I know what CDO tranches are in the pool they are selling).

2) but, amazingly, this 80% loss on the securities only gives a kind of upper bound on their value: Merrill had to provide 75% of the financing to the buyer! Even with an 80% haircut Merrill might not have found a real buyer for the assets at this price.

In the final days of the technology bubble we saw the same thing: vendor financing, in which sellers would loan customers the money to buy the product, just to make their quarterly numbers.

WSJ: ...Much of what Merrill is sitting on is known as collateralized debt obligations on Merrill's books. CDOs are securities backed by pools of mortgages or other assets, which have plummeted in value during the credit crunch. In all, Merrill has written down more than $46.7 billion in exposure to such mortgage-related assets since mid-2007.

The biggest single action Merrill took Monday was the sale of mortgage assets to an affiliate of Lone Star Funds with a face value $30.6 billion which it was carrying on its books at $11.1 billion as of the end of June. The sale, at a purchase price of just $6.7 billion, which represented just 22 cents on the dollar, reduced Merrill's holding of such assets by more than half, from $19.9 billion to $8.8 billion.

Merrill said it would finance about 75% of the value of the deal, a similar action to other banks that loaned money to firms willing to take assets off its hands.

News that Merrill was able to sell these assets, even at a steep discount, bodes well for other firms on Wall Street like Lehman Brothers Holdings Inc., which are also sitting on hard to sell assets.

Saturday, July 26, 2008

Skype backdoor

I knew it was too good to be true! As a for-profit company, Skype/EBay eventually had to cave in to spook pressure and allow for eavesdropping. In fact, the back door might have been in from the beginning.

Heise online: According to reports, there may be a back door built into Skype, which allows connections to be bugged. The company has declined to expressly deny the allegations. At a meeting with representatives of ISPs and the Austrian regulator on lawful interception of IP based services held on 25th June, high-ranking officials at the Austrian interior ministry revealed that it is not a problem for them to listen in on Skype conversations.

This has been confirmed to heise online by a number of the parties present at the meeting. Skype declined to give a detailed response to specific enquiries from heise online as to whether Skype contains a back door and whether specific clients allowing access to a system or a specific key for decrypting data streams exist. The response from the eBay subsidiary's press spokesman was brief, "Skype does not comment on media speculation. Skype has no further comment at this time." There have been rumours of the existence of a special listening device which Skype is reported to offer for sale to interested states.

Here's what I wrote back in 2005:

...I just learned that Skype connections are encrypted using 256 bit AES, negotiated using 1024 bit RSA. This level of encryption is essentially unbreakable with current computing power. The Feds (with the possible exception of the NSA, and they would have to work very hard to break even a single session) have no chance of eavesdropping on any Skype conversation.

It is true that Skype is closed-source, so it isn't easy to verify that the crypto implementation doesn't have any holes or backdoors. However, given the number of users and the negative consequences for the company of any privacy issues, I suspect that it works as advertised.

Well, although you are probably safe from your neighbors or local network admin, the Feds apparently don't have any problems listening in on your Skype calls.

Wednesday, July 23, 2008

Asset-backed oversold? Paulson ready to get back in!

John Paulson made $15 billion for his fund ($3.7 billion for himself!) betting against subprime securities last year. Now Bloomberg reports that he's ready to get back in on the upside!

I'm as dismayed as anyone else about taxpayer dollars going to bail out mortgage holders, commercial banks and the GSE's (Fannie, Freddie). I complained about Fannie back in 2004 when Franklin Raines was still CEO and the story first got out about their smoothing of earnings and use of derivatives accounting.

But, on the other hand, maybe Uncle Sam can actually generate positive return by buying oversold securities! Rumor says that current prices of subprime mortgage backed securities suggest implied default rates which are unrealistically high (e.g., like 50% !). Barring a complete economic meltdown these assets are underpriced and will generate a handsome return for an intelligent investor willing to take some risk. Is Uncle Sam smart? Let's hope that the other Paulson negotiates some upside for us taxpayers in any bailout organized by the Treasury.

Bloomberg: John Paulson, the money manager whose wagers against the U.S. housing market helped him earn an estimated $3.7 billion last year, is now seeking to profit from Wall Street's search for capital to offset mortgage writedowns.

Paulson plans to open a hedge fund by December that will provide capital to the world's biggest banks and brokers as they add to the $345 billion they've raised in the past year, according to two people with knowledge of the matter. His Paulson & Co., which oversees $33 billion, hasn't set a size target for the fund, said the people, who declined to be identified because the plans aren't final.

The New York-based firm's credit funds rose as much as sixfold last year, helped by bets that rising defaults on subprime home loans would pummel the value of mortgage-backed securities. The meltdown has forced the world's biggest banks and securities firms to take $467 billion in asset write-offs and credit losses and led to the collapse of Bear Stearns Cos.

``Investors who are able to make money in a declining market and then rapidly turn around and profit from a rising market is highly unusual,'' said Thomas Whelan, president of Greenwich, Connecticut-based Greenwich Alternative Investments, which advises clients on investing in hedge funds.

Paulson declined to comment. His 2007 earnings made him the highest-paid hedge-fund manager, according to Institutional Investor's Alpha magazine.

Tuesday, July 22, 2008

The joy of gender imbalances on campus

The Chronicle of Higher Education reports on the social effects of gender imbalances. As we know, teenage girls are more likely than boys to have their acts together, hence make up a larger and larger percentage of those who attend college. I see this all the time in my intro classes -- a majority of the most organized students are female, and a majority of the least organized are male. Many universities will have to use affirmative action for male applicants in order to preserve 50-50 gender ratios.

Math puzzle: (optional for readers who have trouble with distributions) If most of the least able students are male, and yet men and women perform equally on average (actually this may not be true anymore, but see PISA data :-), what does that imply about the most able students on campus?

Chronicle: American colleges are undergoing a striking gender shift. In 2015 the average college graduating class will be 60-percent female, according to the U.S. Education Department. Some colleges have already reached or passed that threshold, which allows anecdotal insights into how those imbalances affect the pickup culture. What can be seen so far is not encouraging: Stark gender imbalances appear to act as an accelerant on the hookup culture.

...In 2006 I visited James Madison University, a public university with 17,000 students. At the time, women made up 61 percent of the campus population.

...A senior added: "The guys see that there are a lot more girls, and they're not interested in having a relationship longer than the next girl to come along. Men know how to take advantage of that competition. They'll set things up at parties to get girls to do stuff, such as having a slip and slide contest," in which girls strip to their underwear and get wet sliding through water on a plastic sheet.

As a result of the rising gender imbalances, the university has become "female centric." But while women may run the clubs, dominate in classes, and generally define the character of the university, the law of supply and demand rules the social scene. That's why the women are both competitive in seeking men and submissive in lowering their standards.

Men at the university don't dispute what the women say. "Since there's such an overwhelming number of girls, they have such competition between each other to get a guy," a male junior admitted. "The guys here aren't stupid. They're plenty aware of that and know that girls have to get into a fight over them, instead of what's normal with guys courting girls."

I wonder what a FaceBook search on the keywords "slip and slide" brings up?

Sunday, July 20, 2008

Bay area housing market begins to crack

It's about time! See Calcuated Risk for further discussion. (Note this data covers some regions which are quite far from the bay itself.)

Standard bubble wisdom: they last longer than you think is possible, then pop faster than anyone expects.

I've been calling the bay area bubble since as far back as 2004 / 2005 (actually, from before I started this blog!). I expect the last bubble market to pop will be Manhattan, but pop it will.

It must hurt to think that a house you purchased a year ago might be worth a third less today, with still further to go.

SF Chronicle: Across the nine counties, the median price paid for resale homes, new homes and condos in June plunged 27.1 percent from a year ago to $485,000, dipping below the half-million-dollar mark for the first time in four years, DataQuick Information Systems of La Jolla (San Diego County) reported Thursday.

Among resold homes, bank-repossessed foreclosures - which usually are discounted - accounted for 28.7 percent of all existing-home sales, up from just 3.5 percent in June 2007. Solano County, with foreclosures at 57.7 percent of all resales, had the highest percentage; San Francisco, at 3 percent, had the lowest.

Affluent areas such as Marin County and San Francisco, which until now had resisted most price erosion, saw existing single-family home median prices fall by about 11 percent. Including new homes and condos, the Marin County and San Francisco medians fell about 12 percent to $846,000 and $726,750, respectively.

"This is pretty grim; double digits across the board," said Christopher Thornberg, principal at Los Angeles' Beacon Economics. "It was eminently predictable if you had a realistic view of the world. I heard a lot of people say the Bay Area was never going to see prices fall, San Francisco was untouchable; in San Mateo, it was impossible; San Jose, not with all the tech money, blah, blah, blah. But prices at the peak relative to people's incomes never made any sense."

Note the 27% figure for change in median price is a bit tricky to interpret: it's alway possible that the composition of units sold has changed, with a lot of owners of high end homes sitting on them, refusing to accept the current market price. In that case the average price decline would be less than 27%. It is typical in a real estate crash for sellers to remain in denial for some time, during which the big decline is in number of transactions rather than actual price levels. It's only after the sellers have capitulated that the big price drops occur. In light of that, it's rather ominous that only 7,178 new and resale homes changed hands in June - the lowest June figure since 1993 :-)

Friday, July 18, 2008

Wonderlic fun

The Wonderlic is a simple intelligence test widely administered to job candidates, most famously by the NFL in its annual draft. Try this sample test and report your score in the comments :-)

Note: actual test is 50 problems over 12 minutes, so ESPN is probably incorrect to give 5 minutes for 15 questions. Give yourself 3.6 minutes and multiply your score by 50/15 = 3.33 to get a Wonderlic score, W. Wikipedia estimates: (very roughly) IQ = 2*W + 60

ESPN: ...Each year, about 2.5 million job applicants, in every line of work, take the Wonderlic. The average NFL combiner scores about the same as the average applicant for any other job, a 21. A 20 indicates the test-taker has an IQ of 100, which is average.

Some people disagree with the whole idea of IQ testing because they believe the tests are culturally biased and inaccurate. But Charlie Wonderlic doesn't make grand claims for the score derived from his test. "What the score does is help match training methods with a player's ability," he says. "It could be a playbook -- what is the best way to teach a player a play? On the field, the higher the IQ, the greater the ability to understand and handle contingencies and make sound decisions on the fly."

Yes, we know painfully well how "discredited" IQ tests are. But, evidently, many employers and virtually all universities, not to mention NFL franchises, think that your IQ score has some predictive validity...

The diagram below illustrates how scores vary by position (created by Ben Fry). Note even the "brainy" O-lineman fall short of the average score for college graduates, 28. The overall US average is 21, implying 1 SD is something like 7 Wonderlic points, so the spread between halfback and left tackle is about 1.5 SD.

From Every year, around the time of the NFL draft, there is a sudden surge of interest in the Wonderlic Personnel Test (WPT). The Dallas Cowboys first used the WPT for the selection of football players in the 1960’s. Today, it is one of the standard measures used by the combine and NFL teams when considering draft picks.

Although Wonderlic does not score the WPT for the combine, nor does it receive score reports, there are several sources that publish all of the draft statistics, including Wonderlic scores.

The average WPT score for player positions in the NFL are the same type of scores used by employers when hiring people for specific jobs. In his book Paul Zimmerman’s “The New Thinking man’s Guide to Pro Football,” Paul Zimmerman has published what he believes to be the average scores for NFL players by position.

NFL Position / Wonderlic Score / Job Title

Offensive Tackle / 26 / Marketing Executive
Center / 25 / Claims Examiner
Quarterback / 24 / Computer Operator
Tight End / 22 / Police Officer
Safety / 19 / Butcher
Middle Linebacker / 19 / Hospital Orderly
Cornerback / 18 / Machine Operator
Wide Receiver / 17 / Laboratory Assistant
Fullback / 17 / Dock Hand
Halfback / 16 / Material Handler

Of course, the average score by player position is a group statistic. An employer would use an individual player’s score to determine potential job success. As a point of reference, the average score across the United States is 21, while the average for college graduates is about 28.

Thursday, July 17, 2008

WSJ on income stagnation for college graduates

All examples given where incomes rose (often dramatically) are in the financial sector, and typically require relatively high IQ. The lawyer profiled below specializes in cat bonds!

WSJ: For decades, the typical college graduate's wage rose well above inflation. But no longer. In the economic expansion that began in 2001 and now appears to be ending, the inflation-adjusted wages of the majority of U.S. workers didn't grow, even among those who went to college. The government's statistical snapshots show the typical weekly salary of a worker with a bachelor's degree, adjusted for inflation, didn't rise last year from 2006 and was 1.7% below the 2001 level.

...Economists chiefly cite globalization and technology, which have prompted employers to put the highest value on abstract skills possessed by a relatively small group, for this state of affairs. Harvard University economists Lawrence Katz and Claudia Goldin argue that in the 1990s, it became easier for firms to do overseas, or with computers at home, the work once done by "lower-end college graduates in middle management and certain professional positions." This depressed these workers' wages, but made college graduates whose work was more abstract and creative more productive, driving their salaries up.

Indeed, salaries have seen extraordinary growth among a small number of highly paid individuals in the financial sector -- such as fund management, investment banking and corporate law -- which, until the credit crisis hit a year ago, had benefited both from the buoyant financial environment and the globalization of finance, in which the U.S. remains a leader.

Richard Spitzer is one of those beneficiaries. He received his undergraduate degree in East Asian studies in 1995 from the College of William and Mary and graduated from Georgetown University's law school in 2001. The New York firm for which he works, now called Dewey & LeBoeuf, has a specialty in complex legal work for insurance companies. There, Mr. Spitzer has developed an expertise in "catastrophe bonds." An insurance company sells such bonds to investors and pays them interest, unless an earthquake, a hurricane or unexpected surge in deaths occurs.

Experts in these bonds are "probably a rarefied species -- there's only a few law firms that do them," says Mr. Spitzer, 35 years old. He typically spends two to four months on a single deal, ensuring that details like timing of payments or definition of the triggering event are precise enough to avoid disputes or default.

Mr. Spitzer's salary has doubled to $265,000 since joining in 2001, in line with salaries similar firms pay.

Wednesday, July 16, 2008

War Nerd interview

If you're a fan of the War Nerd, check out this interview on Wisconsin Public Radio.

On hypocrisy:

"I don't live this double life, benefiting from the fact that my house is built on some other tribe's land and then pretending to regret that. I'll always remember having to study Bury My Heart at Wounded Knee, and everyone sobbing for the poor Indians, but nobody's gonna give them the land back. I mean, one way or the f*#king other: either you give them the land back, or you admit you're a predator and you eat meat."

Some question whether self-described fat geek Gary Brecher is really the author of the War Nerd column. One theory is that there is no Gary Brecher, and that the column is written by John Dolan a poet, writer and professor who earned a PhD from UC Berkeley. (See Brecher link for the evidence.)

From Brecher entry on Wikipedia:

...On June 25, 2008, the following revelation is made on [2] in the course of a review of the War Nerd book: But the War Nerd is, in fact, neither of those things. He is not even Gary Brecher! Brecher is the creation of John Dolan, a poet, novelist, lecturer in English at the University of Victoria, and The eXile co-editor. That's very exciting news for the War Nerd's regular readers: The columns you've been dissecting and debating for the last six years were written by an English professor who writes poetry!

Brecher is German for "breaker" or "crusher" :-)

Monday, July 14, 2008

iPhone 3G

My childhood dreams of a communicator/tricorder gizmo have finally been fulfilled :-)

Activation was a snap. I was lucky that one of the stores in town got a shipment of 20 black 16GB phones in this morning via FedEx. They had sold out completely over the weekend (maybe on Friday) and most people are paying in advance and waiting (possibly 7-10 days) to get theirs. Rumor is that Apple sold 500k over the weekend and that they are making 100k per day in their factories in China.

It's actually not that much more functional than the HTC smartphone I've been using for 2 years, but it's much more aesthetically pleasing. Once developers get cranking on new iPhone Apps I think we'll see some amazing stuff -- especially using the built-in GPS.

At foo camp people were really jazzed about Android (the new Google handset operating system), which is totally open. HTC, a gritty Taiwanese company, will be the first out with an Android phone. It's gotta be better than Windows Mobile :-)



Foo camp 2008 coverage

Nice article and photos here (Techcrunch) and here. My sessions were "The information security industry is broken" with John Viega and Dan Kaminski, and "The technology of hand to hand fighting: MMA" :-)

Techcrunch: Shangri La for geeks

275 or so people congregated on the small town of Sebastopol, located 60 miles north of San Francisco in the heart of wine country, for the 2008 Foo Camp this last weekend. Attendees included technologists, professors, researchers engineers, major company executives, billionaire entrepreneurs, students, press and the odd astronaut.

They all had one thing in common - a love of technology. Foo Camp, which stand for Friends of O’Reilly, is an annual three day tech event put on by O’Reilly Media at their Sebasopol headquarters. They supply a huge lawn area where attendees put up tents, food and drinks, bathrooms, Wifi and one very large blank piece of paper marked off in a grid.

There is no structure to the event - if an attendee wants to hold a session on anything at all, they simply write the name of the session somewhere on the grid, which tells people what day/time and place the session will be held. People attend any sessions they like, and with 15 or so happening at any given time, there may be 2 people, or 75 people, in any particular session.

Sessions this year included, to name just a few: “how to fly the space shuttle” by a former astronaut, “the future of news,” “user generated meta data,” “the metrics of virtual worlds,” “decentralizing social networks” and “online hate/trolling.”

In one session on Sunday that I co-led with Tim O’Reilly and Danny Sullivan, we debated the need for competitive search. This was an offshoot of a previousdebate we held on our blogs, but this time with audience participation in real time (including people from the companies being discussed).

The sessions are in an unconference format, meaning the leaders are there to guide the discussion only. Audience participation isn’t just encouraged, it’s a well exercised right (in the picture to the right, you can see Wikipedia founder Jimmy Wales behind the table with his hand raised to make a comment in the “user generated meta data” session led by Esther Dyson). With so many different types of interesting people in any given session at any time, the conversations tend to be fascinating, and occasionally explosive. ...

Friday, July 11, 2008

Beijing ballers

[I'm delayed at EUG waiting for my flight to SFO. Thank god for wifi...]

Check out this awesome video about a Nike 3 on 3 basketball tournament held in the Forbidden City, called Bejing Young Masters.

Thursday, July 10, 2008

Foo camp 2008

I'm off to foo camp tomorrow. I doubt I'll have much time to blog, although you never know...

Monday, July 07, 2008

Annals of psychometry: IQs of eminent scientists

[ See this 2016 post for the original papers / book and the identities of the 64 scientists. ]

I recently came across a 1950s study of eminent scientists by Harvard psychologist Anne Roe: The Making of a Scientist (1952). Her study is by far the most systematic and sophisticated that I am aware of. She selected 64 eminent scientists -- well known, but not quite at the Nobel level -- in a more or less random fashion, using, e.g., membership lists of scholarly organizations and expert evaluators in the particular subfields. Roughly speaking, there were three groups: physicists (divided into experimental and theoretical subgroups), biologists (including biochemists and geneticists) and social scientists (psychologists, anthropologists).

The Making of a Scientist devotes only one chapter to psychometrics. The other chapters describe the motivation for the study, how the 64 scientists were selected, interviews with the scientists, details of their family history, work life, etc.

Roe devised her own high-end intelligence tests as follows: she obtained difficult problems in verbal, spatial and mathematical reasoning from the Educational Testing Service, which administers the SAT, but also performs bespoke testing research for, e.g., the US military. Using these problems, she created three tests (V, S and M), which were administered to the 64 scientists, and also to a cohort of PhD students at Columbia Teacher's College. The PhD students also took standard IQ tests and the results were used to norm the high-end VSM tests using an SD = 15. Most IQ tests are not good indicators of true high level ability (e.g., beyond +3 SD or so).

Average ages of subjects: mid-40s for physicists, somewhat older for other scientists

Overall normed scores:

Test (Low / Median / High)

V 121 / 166 / 177

S 123 / 137 / 164

M 128 / 154 / 194

Roe comments: (1) V test was too easy for some takers, so top score no ceiling. (2) S scores tend to decrease with age (correlation .4). Peak (younger) performance would have been higher. (3) M test was found to be too easy for the physicists; only administered to other groups.

It is unlikely that any single individual obtained all of the low scores, so each of the 64 would have been strongly superior in at least one or more areas.

Median scores (raw) by group:

group (V / S / M)

Biologists 56.6 / 9.4 / 16.8
Exp. Physics 46.6 / 11.7 / *
Theo. Physics 64.2 / 13.8 / *
Psychologists 57.7 / 11.3 / 15.6
Anthropologists 61.1 / 8.2 / 9.2

The lowest score in each category among the 12 theoretical physicists would have been roughly V 160 (!) S 130 M >> 150. (Ranges for all groups are given, but I'm too lazy to reproduce them here.) It is hard to estimate the M scores of the physicists since when Roe tried the test on a few of them they more or less solved every problem modulo some careless mistakes. Note the top raw scores (27 out of 30 problems solved) among the non-physicists (obtained by 2 geneticists and a psychologist), are quite high but short of a full score. The corresponding normed score is 194!

The lowest V scores in the 120-range were only obtained by 2 experimental physicists, all other scientists scored well above this level -- note the median is 166.

My comments:

The results strongly suggest that high IQ provides a significant advantage in science. It is sometimes claimed that IQ is irrelevant beyond a threshold: more precisely, that the advantage conferred by IQ above some threshold (e.g., 120) decreases significantly as other factors like drive or creativity take precedence. But, if that were the case it would be unlikely to have found such high scores in this group. The average IQ of a science PhD is roughly 130, and individuals with IQs in the higher range described above constitute a tiny fraction of all scientists. If IQ were irrelevant above 130 we would expect the most eminent group to have an average similar to the overall population of scientists.

Conversely, I think one should be impressed that a simple test which can be administered in a short period of time (e.g., 30 minutes for Roe's high-end exams) offers significant predictive power. While it is not true that anyone with a high IQ can or will become a great scientist (certainly other factors like drive, luck, creativity play a role), one can nevertheless easily identify the 95 percent (even 99 percent) of the population for whom success in science is highly improbable. Psychometrics works!

The scores for theoretical physicists confirm an estimate made to me by a famous colleague many years ago, that only 1 in 100,000 people could do high level theoretical physics.

Feynman's 124: in this context one often hears of Feynman's modest grade school IQ score of 124. To understand this score we have to remember that typical IQ tests (e.g., administered to public school children) tend to have low ceilings. They are not of the kind that Roe used in her study. One can imagine that the ceiling on Feynman's exam was roughly 135 (say, 99th percentile). If Feynman received the highest score on the mathematical portion, and a modest score of 115 on the verbal, we can easily understand the resulting average of 124. However, it is well known that Feynman was extremely strong mathematically. He was asked on short notice to take the Putnam exam for MIT as a senior, and received the top score in the country that year! On Roe's test Feynman's math score would presumably have been > 190, with a correspondingly higher composite IQ.

I thought I should put this post up now, as the new book by Malcolm Gladwell, Outliers: Why Some People Succeed and Some Don’t is out soon and will surely handicap the discourse on this subject for years to come :-)

Wednesday, July 02, 2008

Notes of a Japanese soldier in the USSR

The drawings below are by Kiuchi Nobuo, a Japanese soldier captured in Manchuria, who survived capitivity in the USSR. He was transported all the way to a camp in Ukraine. His web site is fascinating -- the sketches depict beautiful Soviet women (officers and doctors), children, Mongols, and prisoners of all nationalities. The emotional tone of the pictures is remarkably cheerful, despite what must have been harsh conditions.

By the end of World War II about 600 thousand Japanese soldiers and officers have been held captive in thousands of prison camps on a territory, stretched from Kamchatka in the East, across Urals to European part of USSR in the West and Yenisei Basin in the North. The History Chapters not only hold Japanese Army sound victories but also atrocities of defeat that I intend to tell about to the new generation. I decided to draw these pictures in memory of those of my comrades-in-arms, who were not destined to return home..

Picture of Kiuchi:

Some sketches (English translations of captions to be found on the web site):

Tuesday, July 01, 2008

Colorful quantum black holes at the LHC

New paper! What are the experimental signatures of a quantum black hole -- i.e., a black hole whose Schwarzschild radius is of order the length scale of quantum gravity? It's a long shot, but perhaps we'll see the remnants of tiny quantum black holes in the gigantic detectors at the Large Hadron Collider (LHC)!

Colorful quantum black holes at the LHC

Xavier Calmet, Wei Gong, Stephen D. H. Hsu

We examine the LHC phenomenology of quantum black holes in models of TeV gravity. By quantum black holes we mean black holes of the smallest masses and entropies, far from the semiclassical regime. These black holes are formed and decay over short distances, and typically carry SU(3) color charges inherited from their parton progenitors. Based on a few minimal assumptions, such as gauge invariance, we identify interesting signatures for quantum black hole decay such as 2 jets, jet + hard photon, jet + missing energy and jet + charged lepton, which should be readily visible above background. The detailed phenomenology depends heavily on whether one requires a Lorentz invariant, low-energy effective field theory description of black hole processes.

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