science

Various confidence scams, tricks, & frauds

business, history, law, science, security / By /

From “List of confidence tricks” (Wikipedia: 3 July 2009):

Get-rich-quick schemes

Get-rich-quick schemes are extremely varied. For example, fake franchises, real estate “sure things”, get-rich-quick books, wealth-building seminars, self-help gurus, sure-fire inventions, useless products, chain letters, fortune tellers, quack doctors, miracle pharmaceuticals, Nigerian money scams, charms and talismans are all used to separate the mark from his money. Variations include the pyramid scheme, Ponzi scheme and Matrix sale.

Count Victor Lustig sold the “money-printing machine” which could copy $100 bills. The client, sensing huge profits, would buy the machines for a high price (usually over $30,000). Over the next twelve hours, the machine would produce just two more $100 bills, but after that it produced only blank paper, as its supply of hidden $100 bills would have become exhausted. This type of scheme is also called the “money box” scheme.

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The wire game, as depicted in the movie The Sting, trades on the promise of insider knowledge to beat a gamble, stock trade or other monetary action. In the wire game, a “mob” composed of dozens of grifters simulates a “wire store”, i.e., a place where results from horse races are received by telegram and posted on a large board, while also being read aloud by an announcer. The griftee is given secret foreknowledge of the race results minutes before the race is broadcast, and is therefore able to place a sure bet at the wire store. In reality, of course, the con artists who set up the wire store are the providers of the inside information, and the mark eventually is led to place a large bet, thinking it to be a sure win. At this point, some mistake is made, which actually makes the bet a loss. …

Salting or to salt the mine are terms for a scam in which gems or gold ore are planted in a mine or on the landscape, duping the greedy mark into purchasing shares in a worthless or non-existent mining company.[2] During the Gold Rush, scammers would load shotguns with gold dust and shoot into the sides of the mine to give the appearance of a rich ore, thus “salting the mine”. …

The Spanish Prisoner scam – and its modern variant, the advance fee fraud or Nigerian scam – take advantage of the victim’s greed. The basic premise involves enlisting the mark to aid in retrieving some stolen money from its hiding place. The victim sometimes believes he can cheat the con artists out of their money, but anyone trying this has already fallen for the essential con by believing that the money is there to steal (see also Black money scam). …

Many conmen employ extra tricks to keep the victim from going to the police. A common ploy of investment scammers is to encourage a mark to use money concealed from tax authorities. The mark cannot go to the authorities without revealing that he or she has committed tax fraud. Many swindles involve a minor element of crime or some other misdeed. The mark is made to think that he or she will gain money by helping fraudsters get huge sums out of a country (the classic Nigerian scam); hence marks cannot go to the police without revealing that they planned to commit a crime themselves.

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Gold brick scams

Gold brick scams involve selling a tangible item for more than it is worth; named after selling the victim an allegedly golden ingot which turns out to be gold-coated lead.

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Pig-in-a-poke originated in the late Middle Ages. The con entails a sale of a (suckling) “pig” in a “poke” (bag). The bag ostensibly contains a live healthy little pig, but actually contains a cat (not particularly prized as a source of meat, and at any rate, quite unlikely to grow to be a large hog). If one buys a “pig in a poke” without looking in the bag (a colloquial expression in the English language, meaning “to be a sucker”), the person has bought something of less value than was assumed, and has learned firsthand the lesson caveat emptor.

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The Thai gem scam involves layers of con men and helpers who tell a tourist in Bangkok of an opportunity to earn money by buying duty-free jewelry and having it shipped back to the tourist’s home country. The mark is driven around the city in a tuk-tuk operated by one of the con men, who ensures that the mark meets one helper after another, until the mark is persuaded to buy the jewelry from a store also operated by the swindlers. The gems are real but significantly overpriced. This scam has been operating for 20 years in Bangkok, and is said to be protected by Thai police and politicians. A similar scam usually runs in parallel for custom-made suits.

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Extortion or false-injury tricks

The badger game extortion is often perpetrated on married men. The mark is deliberately coerced into a compromising position, a supposed affair for example, then threatened with public exposure of his acts unless blackmail money is paid.

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The Melon Drop is a scam in which the scammer will intentionally bump into the mark and drop a package containing (already broken) glass. He will blame the damage on the clumsiness of the mark, and demand money in compensation. This con arose when artists discovered that the Japanese paid large sums of money for watermelons. The scammer would go to a supermarket to buy a cheap watermelon, then bump into a Japanese tourist and set a high price.

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Gambling tricks

Three-card Monte, ‘Find The Queen’, the “Three-card Trick”, or “Follow The Lady”, is (except for the props) essentially the same as the probably centuries-older shell game or thimblerig. The trickster shows three playing cards to the audience, one of which is a queen (the “lady”), then places the cards face-down, shuffles them around and invites the audience to bet on which one is the queen. At first the audience is skeptical, so the shill places a bet and the scammer allows him to win. In one variation of the game, the shill will (apparently surreptitiously) peek at the lady, ensuring that the mark also sees the card. This is sometimes enough to entice the audience to place bets, but the trickster uses sleight of hand to ensure that they always lose, unless the conman decides to let them win, hoping to lure them into betting much more. The mark loses whenever the dealer chooses to make him lose. This con appears in the Eric Garcia novel Matchstick Men and is featured in the movie Edmond.

A variation on this scam exists in Barcelona, Spain, but with the addition of a pickpocket. The dealer and shill behave in an overtly obvious manner, attracting a larger audience. When the pickpocket succeeds in stealing from a member of the audience, he signals the dealer. The dealer then shouts the word “aqua”, and the three split up. The audience is left believing that “aqua” is a code word indicating the police are coming, and that the performance was a failed scam.

In the Football Picks Scam the scammer sends out tip sheet stating a game will go one way to 100 potential victims and the other way to another 100. The next week, the 100 or so who received the correct answer are divided into two groups and fed another pick. This is repeated until a small population have (apparently) received a series of supernaturally perfect picks, then the final pick is offered for sale. Despite being well-known (it was even described completely on an episode of The Simpsons and used by Derren Brown in “The System”), this scam is run almost continuously in different forms by different operators. The sports picks can also be replaced with securities, or any other random process, in an alternative form. This scam has also been called the inverted pyramid scheme, because of the steadily decreasing population of victims at each stage.

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Visitors to Las Vegas or other gambling towns often encounter the Barred Winner scam, a form of advance fee fraud performed in person. The artist will approach his mark outside a casino with a stack or bag of high-value casino chips and say that he just won big, but the casino accused him of cheating and threw him out without letting him redeem the chips. The artist asks the mark to go in and cash the chips for him. The artist will often offer a percentage of the winnings to the mark for his trouble. But, when the mark agrees, the artist feigns suspicion and asks the mark to put up something of value “for insurance”. The mark agrees, hands over jewelry, a credit card or their wallet, then goes in to cash the chips. When the mark arrives at the cashier, they are informed the chips are fake. The artist, by this time, is long gone with the mark’s valuables.

False reward tricks

The glim-dropper requires several accomplices, one of whom must be a one-eyed man. One grifter goes into a store and pretends he has lost his glass eye. Everyone looks around, but the eye cannot be found. He declares that he will pay a thousand-dollar reward for the return of his eye, leaving contact information. The next day, an accomplice enters the store and pretends to find the eye. The storekeeper (the intended griftee), thinking of the reward, offers to take it and return it to its owner. The finder insists he will return it himself, and demands the owner’s address. Thinking he will lose all chance of the reward, the storekeeper offers a hundred dollars for the eye. The finder bargains him up to $250, and departs.…

The fiddle game uses the pigeon drop technique. A pair of con men work together, one going into an expensive restaurant in shabby clothes, eating, and claiming to have left his wallet at home, which is nearby. As collateral, the con man leaves his only worldly possession, the violin that provides his livelihood. After he leaves, the second con man swoops in, offers an outrageously large amount (for example $50,000) for such a rare instrument, then looks at his watch and runs off to an appointment, leaving his card for the mark to call him when the fiddle-owner returns. The mark’s greed comes into play when the “poor man” comes back, having gotten the money to pay for his meal and redeem his violin. The mark, thinking he has an offer on the table, then buys the violin from the fiddle player (who “reluctantly” sells it eventually for, say, $5,000). The result is the two conmen are $5,000 richer (less the cost of the violin), and the mark is left with a cheap instrument.

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Other confidence tricks and techniques

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The Landlord Scam advertises an apartment for rent at an attractive price. The con artist, usually someone who is house-sitting or has a short-term sublet at the unit, takes a deposit and first/last month’s rent from every person who views the suite. When move-in day arrives, the con artist is of course gone, and the apartment belongs to none of the angry people carrying boxes.

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Change raising is a common short con and involves an offer to change an amount of money with someone, while at the same time taking change or bills back and forth to confuse the person as to how much money is actually being changed. The most common form, “the Short Count”, has been featured prominently in several movies about grifting, notably Nueve Reinas, The Grifters and Paper Moon. A con artist shopping at, say a gas station, is given 80 cents in change because he lacks two dimes to complete the sale (say the sale cost is $19.20 and the con man has a 20 dollar bill). He goes out to his car and returns a short time later, with 20 cents. He returns them, saying that he found the rest of the change to make a dollar, and asking for a bill so he will not have to carry coins. The confused store clerk agrees, exchanging a dollar for the 20 cents the conman returned. In essence, the mark makes change twice.

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Beijing tea scam is a famous scam in and around Beijing. The artists (usually female and working in pairs) will approach tourists and try to make friends. After chatting, they will suggest a trip to see a tea ceremony, claiming that they have never been to one before. The tourist is never shown a menu, but assumes that this is how things are done in China. After the ceremony, the bill is presented to the tourist, charging upwards of $100 per head. The artists will then hand over their bills, and the tourists are obliged to follow suit.

All about freezing to death

education, science / By /

Ice mask, C.T. Madigan / photograph by Frank Hurley
Creative Commons License photo credit: State Library of New South Wales collection

From Peter Stark’s “As Freezing Persons Recollect the Snow–First Chill–Then Stupor–Then the Letting Go” (Outside: January 1997):

There is no precise core temperature at which the human body perishes from cold. At Dachau’s cold-water immersion baths, Nazi doctors calculated death to arrive at around 77 degrees Fahrenheit. The lowest recorded core temperature in a surviving adult is 60.8 degrees. For a child it’s lower: In 1994, a two-year-old girl in Saskatchewan wandered out of her house into a minus-40 night. She was found near her doorstep the next morning, limbs frozen solid, her core temperature 57 degrees. She lived.

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The cold remains a mystery, more prone to fell men than women, more lethal to the thin and well muscled than to those with avoirdupois, and least forgiving to the arrogant and the unaware.

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Were you a Norwegian fisherman or Inuit hunter, both of whom frequently work gloveless in the cold, your chilled hands would open their surface capillaries periodically to allow surges of warm blood to pass into them and maintain their flexibility. This phenomenon, known as the hunter’s response, can elevate a 35-degree skin temperature to 50 degrees within seven or eight minutes.

Other human adaptations to the cold are more mysterious. Tibetan Buddhist monks can raise the skin temperature of their hands and feet by 15 degrees through meditation. Australian aborigines, who once slept on the ground, unclothed, on near-freezing nights, would slip into a light hypothermic state, suppressing shivering until the rising sun rewarmed them.

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The exertion that warmed you on the way uphill now works against you: Your exercise-dilated capillaries carry the excess heat of your core to your skin, and your wet clothing dispels it rapidly into the night. The lack of insulating fat over your muscles allows the cold to creep that much closer to your warm blood.

Your temperature begins to plummet. Within 17 minutes it reaches the normal 98.6. Then it slips below.

At 97 degrees, hunched over in your slow search, the muscles along your neck and shoulders tighten in what’s known as pre-shivering muscle tone. Sensors have signaled the temperature control center in your hypothalamus, which in turn has ordered the constriction of the entire web of surface capillaries. Your hands and feet begin to ache with cold.

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At 95, you’ve entered the zone of mild hypothermia. You’re now trembling violently as your body attains its maximum shivering response, an involuntary condition in which your muscles contract rapidly to generate additional body heat.

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And after this long stop, the skiing itself has become more difficult. By the time you push off downhill, your muscles have cooled and tightened so dramatically that they no longer contract easily, and once contracted, they won’t relax. You’re locked into an ungainly, spread-armed, weak-kneed snowplow.

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As you sink back into the snow, shaken, your heat begins to drain away at an alarming rate, your head alone accounting for 50 percent of the loss. The pain of the cold soon pierces your ears so sharply that you root about in the snow until you find your hat and mash it back onto your head.

But even that little activity has been exhausting. You know you should find your glove as well, and yet you’re becoming too weary to feel any urgency. You decide to have a short rest before going on.

An hour passes. at one point, a stray thought says you should start being scared, but fear is a concept that floats somewhere beyond your immediate reach, like that numb hand lying naked in the snow. You’ve slid into the temperature range at which cold renders the enzymes in your brain less efficient. With every one-degree drop in body temperature below 95, your cerebral metabolic rate falls off by 3 to 5 percent. When your core temperature reaches 93, amnesia nibbles at your consciousness.

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In the minus-35-degree air, your core temperature falls about one degree every 30 to 40 minutes, your body heat leaching out into the soft, enveloping snow. Apathy at 91 degrees. Stupor at 90.

You’ve now crossed the boundary into profound hypothermia. By the time your core temperature has fallen to 88 degrees, your body has abandoned the urge to warm itself by shivering. Your blood is thickening like crankcase oil in a cold engine. Your oxygen consumption, a measure of your metabolic rate, has fallen by more than a quarter. Your kidneys, however, work overtime to process the fluid overload that occurred when the blood vessels in your extremities constricted and squeezed fluids toward your center. You feel a powerful urge to urinate, the only thing you feel at all.

By 87 degrees you’ve lost the ability to recognize a familiar face, should one suddenly appear from the woods.

At 86 degrees, your heart, its electrical impulses hampered by chilled nerve tissues, becomes arrhythmic. It now pumps less than two-thirds the normal amount of blood. The lack of oxygen and the slowing metabolism of your brain, meanwhile, begin to trigger visual and auditory hallucinations.

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At 85 degrees, those freezing to death, in a strange, anguished paroxysm, often rip off their clothes. This phenomenon, known as paradoxical undressing, is common enough that urban hypothermia victims are sometimes initially diagnosed as victims of sexual assault. Though researchers are uncertain of the cause, the most logical explanation is that shortly before loss of consciousness, the constricted blood vessels near the body’s surface suddenly dilate and produce a sensation of extreme heat against the skin.

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There’s an adage about hypothermia: “You aren’t dead until you’re warm and dead.”

At about 6:00 the next morning, his friends, having discovered the stalled Jeep, find him, still huddled inches from the buried log, his gloveless hand shoved into his armpit. The flesh of his limbs is waxy and stiff as old putty, his pulse nonexistent, his pupils unresponsive to light. Dead.

But those who understand cold know that even as it deadens, it offers perverse salvation. Heat is a presence: the rapid vibrating of molecules. Cold is an absence: the damping of the vibrations. At absolute zero, minus 459.67 degrees Fahrenheit, molecular motion ceases altogether. It is this slowing that converts gases to liquids, liquids to solids, and renders solids harder. It slows bacterial growth and chemical reactions. In the human body, cold shuts down metabolism. The lungs take in less oxygen, the heart pumps less blood. Under normal temperatures, this would produce brain damage. But the chilled brain, having slowed its own metabolism, needs far less oxygen-rich blood and can, under the right circumstances, survive intact.

Setting her ear to his chest, one of his rescuers listens intently. Seconds pass. Then, faintly, she hears a tiny sound–a single thump, so slight that it might be the sound of her own blood. She presses her ear harder to the cold flesh. Another faint thump, then another.

The slowing that accompanies freezing is, in its way, so beneficial that it is even induced at times. Cardiologists today often use deep chilling to slow a patient’s metabolism in preparation for heart or brain surgery. In this state of near suspension, the patient’s blood flows slowly, his heart rarely beats–or in the case of those on heart-lung machines, doesn’t beat at all; death seems near. But carefully monitored, a patient can remain in this cold stasis, undamaged, for hours.

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In fact, many hypothermia victims die each year in the process of being rescued. In “rewarming shock,” the constricted capillaries reopen almost all at once, causing a sudden drop in blood pressure. The slightest movement can send a victim’s heart muscle into wild spasms of ventricular fibrillation. In 1980, 16 shipwrecked Danish fishermen were hauled to safety after an hour and a half in the frigid North Sea. They then walked across the deck of the rescue ship, stepped below for a hot drink, and dropped dead, all 16 of them.

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The doctor rapidly issues orders to his staff: intravenous administration of warm saline, the bag first heated in the microwave to 110 degrees. Elevating the core temperature of an average-size male one degree requires adding about 60 kilocalories of heat. A kilocalorie is the amount of heat needed to raise the temperature of one liter of water one degree Celsius. Since a quart of hot soup at 140 degrees offers about 30 kilocalories, the patient curled on the table would need to consume 40 quarts of chicken broth to push his core temperature up to normal. Even the warm saline, infused directly into his blood, will add only 30 kilocalories.

Ideally, the doctor would have access to a cardiopulmonary bypass machine, with which he could pump out the victim’s blood, rewarm and oxygenate it, and pump it back in again, safely raising the core temperature as much as one degree every three minutes. But such machines are rarely available outside major urban hospitals.

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You’d nod if you could. But you can’t move. All you can feel is throbbing discomfort everywhere. Glancing down to where the pain is most biting, you notice blisters filled with clear fluid dotting your fingers, once gloveless in the snow. During the long, cold hours the tissue froze and ice crystals formed in the tiny spaces between your cells, sucking water from them, blocking the blood supply. You stare at them absently.

“I think they’ll be fine,” a voice from overhead says. “The damage looks superficial. We expect that the blisters will break in a week or so, and the tissue should revive after that.”

If not, you know that your fingers will eventually turn black, the color of bloodless, dead tissue. And then they will be amputated.

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You’ve seen that in the infinite reaches of the universe, heat is as glorious and ephemeral as the light of the stars. Heat exists only where matter exists, where particles can vibrate and jump. In the infinite winter of space, heat is tiny; it is the cold that is huge.

Famous “Laws” of Business & Technology

business, commonplace book, science, technology / By /

These come from a variety of sources; just Google the law to find out more about it.

Parkinson’s Law

“Work expands so as to fill the time available for its completion.”

Source: Cyril Northcote Parkinson in The Economist (1955)

The Peter Principle

“In a hierarchy every employee tends to rise to his level of incompetence.”

Source: Dr. Laurence J. Peter and Raymond Hull in The Peter Principle (1968)

The Dilbert Principle

“Leadership is nature’s way of removing morons from the productive flow.”

Source: Scott Adams’ Dilbert (February 5, 1995)

Hofstadter’s Law

“It always takes longer than you expect, even when you take into account Hofstadter’s Law.”

Source: Douglas Hofstadter’s Gödel, Escher, Bach: An Eternal Golden Braid (1979)

Amara’s Law

“We tend to overestimate the effect of a technology in the short run and underestimate the effect in the long run.”

Source: Roy Amara.

Brooks’ Law

Adding manpower to a late software project makes it later.

Source: Fred Brooks’ The Mythical Man-Month (1975)

Clarke’s 3 Laws

  1. First law: When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
  2. Second law: The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
  3. Third law: Any sufficiently advanced technology is indistinguishable from magic.

Source: Arthur C. Clarke’s “Hazards of Prophecy: The Failure of Imagination” in Profiles of the Future (1962)

Conway’s Law

“Any piece of software reflects the organizational structure that produced it.”

Source: Melvin Conway (1968)

Gall’s Law

“A complex system that works is invariably found to have evolved from a simple system that worked. The inverse proposition also appears to be true: A complex system designed from scratch never works and cannot be made to work.”

Source: John Gall’s Systemantics: How Systems Really Work and How They Fail (1978)

Godwin’s Law

“As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one.”

Source: Mike Godwin (1990)

Hanlon’s Razor

“Never attribute to malice that which can be adequately explained by stupidity.”

Herblock’s Law

“If it’s good, they’ll stop making it.”

Source: Herbert Lawrence Block

Kranzberg’s 6 Laws of Technology

  1. Technology is neither good nor bad; nor is it neutral.
  2. Invention is the mother of necessity.
  3. Technology comes in packages, big and small.
  4. Although technology might be a prime element in many public issues, nontechnical factors take precedence in technology-policy decisions.
  5. All history is relevant, but the history of technology is the most relevant.
  6. Technology is a very human activity – and so is the history of technology.

Source: Melvin Kranzberg’s “Kranzberg’s Laws” Technology and Culture, Vol. 27, No. 3 (1986): 544-560

Linus’s Law

“Given enough eyeballs, all bugs are shallow.”

Source: Linus Torvalds

Schneier’s Law

“Any person can invent a security system so clever that she or he can’t think of how to break it.”

Source: Cory Doctorow’s “Microsoft Research DRM talk” (17 June 2004)

Sturgeon’s Revelation

“90 percent of everything is crap.”

Source: Theodore Sturgeon (1951)

Wirth’s Law

“Software is getting slower more rapidly than hardware becomes faster.”

Source: Niklaus Wirth (1995)

Zawinski’s Law

“Every program attempts to expand until it can read mail. Those programs which cannot so expand are replaced by ones which can.”

Source: Jamie Zawinski

Granneman’s Law of Operating System Usage

“To mess up a Linux box, you need to work at it; to mess up your Windows box, you just need to work on it. ”

Source: Scott Granneman’s “Linux vs. Windows Viruses” in SecurityFocus (10 February 2003)

The Uncanny Valley, art forgery, & love

art, business, history, on writing, science, security, tech in changing society, weird / By /

Apply new wax to old wood
Creative Commons License photo credit: hans s

From Errol Morris’ “Bamboozling Ourselves (Part 2)” (The New York Times: 28 May 2009):

[Errol Morris:] The Uncanny Valley is a concept developed by the Japanese robot scientist Masahiro Mori. It concerns the design of humanoid robots. Mori’s theory is relatively simple. We tend to reject robots that look too much like people. Slight discrepancies and incongruities between what we look like and what they look like disturb us. The closer a robot resembles a human, the more critical we become, the more sensitive to slight discrepancies, variations, imperfections. However, if we go far enough away from the humanoid, then we much more readily accept the robot as being like us. This accounts for the success of so many movie robots — from R2-D2 to WALL-E. They act like humans but they don’t look like humans. There is a region of acceptability — the peaks around The Uncanny Valley, the zone of acceptability that includes completely human and sort of human but not too human. The existence of The Uncanny Valley also suggests that we are programmed by natural selection to scrutinize the behavior and appearance of others. Survival no doubt depends on such an innate ability.

EDWARD DOLNICK: [The art forger Van Meegeren] wants to avoid it. So his big challenge is he wants to paint a picture that other people are going to take as Vermeer, because Vermeer is a brand name, because Vermeer is going to bring him lots of money, if he can get away with it, but he can’t paint a Vermeer. He doesn’t have that skill. So how is he going to paint a picture that doesn’t look like a Vermeer, but that people are going to say, “Oh! It’s a Vermeer?” How’s he going to pull it off? It’s a tough challenge. Now here’s the point of The Uncanny Valley: as your imitation gets closer and closer to the real thing, people think, “Good, good, good!” — but then when it’s very close, when it’s within 1 percent or something, instead of focusing on the 99 percent that is done well, they focus on the 1 percent that you’re missing, and you’re in trouble. Big trouble.

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Van Meegeren is trapped in the valley. If he tries for the close copy, an almost exact copy, he’s going to fall short. He’s going to look silly. So what he does instead is rely on the blanks in Vermeer’s career, because hardly anything is known about him; he’s like Shakespeare in that regard. He’ll take advantage of those blanks by inventing a whole new era in Vermeer’s career. No one knows what he was up to all this time. He’ll throw in some Vermeer touches, including a signature, so that people who look at it will be led to think, “Yes, this is a Vermeer.”

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Van Meegeren was sometimes careful, other times astonishingly reckless. He could have passed certain tests. What was peculiar, and what was quite startling to me, is that it turned out that nobody ever did any scientific test on Van Meegeren, even the stuff that was available in his day, until after he confessed. And to this day, people hardly ever test pictures, even multi-million dollar ones. And I was so surprised by that that I kept asking, over and over again: why? Why would that be? Before you buy a house, you have someone go through it for termites and the rest. How could it be that when you’re going to lay out $10 million for a painting, you don’t test it beforehand? And the answer is that you don’t test it because, at the point of being about to buy it, you’re in love! You’ve found something. It’s going to be the high mark of your collection; it’s going to be the making of you as a collector. You finally found this great thing. It’s available, and you want it. You want it to be real. You don’t want to have someone let you down by telling you that the painting isn’t what you think it is. It’s like being newly in love. Everything is candlelight and wine. Nobody hires a private detective at that point. It’s only years down the road when things have gone wrong that you say, “What was I thinking? What’s going on here?” The collector and the forger are in cahoots. The forger wants the collector to snap it up, and the collector wants it to be real. You are on the same side. You think that it would be a game of chess or something, you against him. “Has he got the paint right?” “Has he got the canvas?” You’re going to make this checkmark and that checkmark to see if the painting measures up. But instead, both sides are rooting for this thing to be real. If it is real, then you’ve got a masterpiece. If it’s not real, then today is just like yesterday. You’re back where you started, still on the prowl.

A better alternative to text CAPTCHAs

business, science, security, technology / By /

From Rich Gossweiler, Maryam Kamvar, & Shumeet Baluja’s “What’s Up CAPTCHA?: A CAPTCHA Based On Image Orientation” (Google: 20-24 April 2009):

There are several classes of images which can be successfully oriented by computers. Some objects, such as faces, cars, pedestrians, sky, grass etc.

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Many images, however, are difficult for computers to orient. For example, indoor scenes have variations in lighting sources, and abstract and close-up images provide the greatest challenge to both computers and people, often because no clear anchor points or lighting sources exist.

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The average performance on outdoor photographs, architecture photographs and typical tourist type photographs was significantly higher than the performance on abstract photographs, close-ups and backgrounds. When an analysis of the features used to make the discriminations was done, it was found that the edge features play a significant role.

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It is important not to simply select random images for this task. There are many cues which can quickly reveal the upright orientation of an image to automated systems; these images must be filtered out. For example, if typical vacation or snapshot photos are used, automated rotation accuracies can be in the 90% range. The existence of any of the cues in the presented images will severely limit the effectiveness of the approach. Three common cues are listed below:

1. Text: Usually the predominant orientation of text in an image reveals the upright orientation of an image.

2. Faces and People: Most photographs are taken with the face(s) / people upright in the image.

3. Blue skies, green grass, and beige sand: These are all revealing clues, and are present in many travel/tourist photographs found on the web. Extending this beyond color, in general, the sky often has few texture/edges in comparison to the ground. Additional cues found important in human tests include "grass", "trees", "cars", "water" and "clouds".

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Second, due to sometimes warped objects, lack of shading and lighting cues, and often unrealistic colors, cartoons also make ideal candidates. … Finally, although we did not alter the content of the image, it may be possible to simply alter the color- mapping, overall lighting curves, and hue/saturation levels to reveal images that appear unnatural but remain recognizable to people.

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To normalize the shape and size of the images, we scaled each image to a 180×180 pixel square and we then applied a circular mask to remove the image corners.

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We have created a system that has sufficiently high human- success rates and sufficiently low computer-success rates. When using three images, the rotational CAPTCHA system results in an 84% human success metric, and a .009% bot-success metric (assuming random guessing). These metrics are based on two variables: the number of images we require a user to rotate and the size of the acceptable error window (the degrees from upright which we still consider to be upright). Predictably, as the number of images shown becomes greater, the probability of correctly solving them decreases. However, as the error window increases, the probability of correctly solving them increases. The system which results in an 84% human success rate and .009% bot success rate asks the user to rotate three images, each within 16° of upright (8-degrees on either side of upright).

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A CAPTCHA system which displayed ≥ 3 images with a ≤ 16-degree error window would achieve a guess success rate of less than 1 in 10,000, a standard acceptable computer success rates for CAPTCHAs.

…

In our experiments, users moved a slider to rotate the image to its upright position. On small display devices such as a mobile phone, they could directly manipulate the image using a touch screen, as seen in Figure 12, or can rotate it via button presses.

Roger Ebert on death

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From Roger Ebert’s “Go gentle into that good night” (Roger Ebert’s Journal: 2 May 2009):

What I expect will most probably happen [when I die] is that my body will fail, my mind will cease to function, and that will be that. My genes will not live on, because I have had no children. Perhaps I have been infertile. If I discover that somewhere along the way I conceived a child, let that child step forward and he or she will behold a happy man. Through my wife, I have had stepchildren and grandchildren, and I love them unconditionally, which is the only kind of love worth bothering with.

I am comforted by Richard Dawkins’ theory of memes. Those are mental units: thoughts, ideas, gestures, notions, songs, beliefs, rhymes, ideals, teachings, sayings, phrases, clichés, that move from mind to mind as genes move from body to body. After a lifetime of writing, teaching, broadcasting and happily torturing people with my jokes, I will leave behind more memes than many. They will all eventually die as well, but so it goes.

I drank for many years in a tavern that had a photograph of Brendan Behan on the wall, and under it this quotation, which I memorized:

I respect kindness in human beings first of all, and kindness to animals. I don’t respect the law; I have a total irreverence for anything connected with society except that which makes the roads safer, the beer stronger, the food cheaper and the old men and old women warmer in the winter and happier in the summer.

For 57 words, that does a pretty good job of summing it up. “Kindness” covers all of my political beliefs. No need to spell them out. Kindness is why I vote liberal and not conservative–but let’s not go there, not today. I believe that if, at the end of it all, according to our abilities, we have done something to make others a little happier, and something to make ourselves a little happier, that is about the best we can do. To make others less happy is a crime. To make ourselves unhappy is where all crime starts. We must try to contribute joy to the world. That is true no matter what our problems, our health, our circumstances. We must try. I didn’t always know this, and am happy I lived long enough to find it out.

Extreme male brains

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From Joe Clark’s “The extreme Google brain” (Fawny: 26 April 2009):

… Susan Pinker’s The Sexual Paradox, which explains, using scientific findings, why large majorities of girls and women behave almost identically at different stages of their lives – while large minorities of boys and men show vast variability compared to each other and to male norms.

Some of these boys and men exhibit extreme-male-brain tendencies, including an ability to focus obsessively for long periods of time, often on inanimate objects or abstractions (hence male domination of engineering and high-end law). Paradoxically, other male brains in these exceptional cases may have an ability to experiment with many options for short periods each. Pejoratively diagnosed as attention-deficit disorder, Pinker provides evidence this latter ability is actually a strength for some entrepreneurs.

The male brain, extreme or not, is compatible with visual design. It allows you to learn every font in the Letraset catalogue and work from a grid. In fact, the male-brain capacity for years-long single-mindedness explains why the heads of large ad agencies and design houses are overwhelmingly male. (It isn’t a sexist conspiracy.)

In the computer industry, extreme male brains permit years of concentration on hardware and software design, while also iterating those designs seemingly ad infinitum. The extreme male brain is really the extreme Google brain. It’s somewhat of a misnomer, because such is actually the average brain inside the company, but I will use that as a neologism.

Google was founded by extreme-male-brain nerds and, by all outward appearances, seems to hire only that type of person, not all of them male.

German twins commit the perfect crime

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From “Twins Suspected in Spectacular Jewelry Heist Set Free” (Spiegel Online International: 19 March 2009):

Saved by their indistinguishable DNA, identical twins suspected in a massive jewelry heist have been set free. Neither could be exclusively linked to the DNA evidence.

German police say at least one of the identical twin brothers Hassan and Abbas O. may have perpetrated a recent multimillion euro jewelry heist in Berlin. But because of their indistinguishable DNA, neither can be individually linked to the crime. Both were set free on Wednesday.

In the early morning hours of February 25, three masked men broke into Germany’s famous luxury department store Kaufhaus Des Westens (KaDeWe). Video cameras show how they climbed into the store’s grand main hall, broke open cabinets and display cases and made off with an estimated €5 million worth of jewelry and watches.

When police found traces of DNA on a glove left at the scene of the crime, it seemed that the criminals responsible for Germany’s most spectacular heist in years would be caught. But the DNA led to not one but two suspects — 27-year-old identical, or monozygotic, twins with near-identical DNA.

German law stipulates that each criminal must be individually proven guilty. The problem in the case of the O. brothers is that their twin DNA is so similar that neither can be exclusively linked to the evidence using current methods of DNA analysis. So even though both have criminal records and may have committed the heist together, Hassan and Abbas O. have been set free.

Fossils are the lucky ones

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From Errol Morris’ “Whose Father Was He? (Part Five)” (The New York Times: 2 April 2009):

I had an opportunity to visit the fossil collections at the Museum of the Rockies in Bozeman, Montana. It was part of a dinosaur fossil-hunting trip with Jack Horner, the premier hunter of T-Rex skeletons. Downstairs in the lab, there was a Triceratops skull sitting on a table. I picked it up and inserted my finger into the brain cavity. (I had read all these stories about how small the Triceratops brain had to have been and I wanted to see for myself.) I said to Jack Horner, “To think that someday somebody will do that with my skull.” And he said, “You should be so lucky. It’s only the privileged few of us who get to be fossils.”

Why did Thomas Jefferson bring a stuffed moose to France?

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From David G. Post’s “Jefferson’s Moose” (Remarks presented at the Stanford Law School Conference on Privacy in Cyberspace: 7 February 2000):

In 1787, Jefferson, then the American Minister to France, had the “complete skeleton, skin & horns of the Moose” shipped to him in Paris and mounted in the lobby of his hotel. One can only imagine the comments made by bemused onlookers and hotel staff.

This was no small undertaking at that time — I suppose it would be no small undertaking even today. It’s not as if he had no other things to do with his time or his money. It’s worth asking: Why did he do it? What could have possessed him?

He wanted, first, to shock. He wanted his French friends to stand back, to gasp, and to say: There really is a new world out there, one that has things in it that we can hardly imagine. He wanted them to have what Lessig called an “aha! moment” in regard to the New World from out of which Jefferson (and his moose) had emerged.

But there was another, more specific, purpose. He wanted to show them that this new world was not a degenerate place. The Comte de Buffon, probably the most celebrated naturalist of the late 18th Century, had propounded just such a theory about the degeneracy of life in the New World. Jefferson described Buffon’s theory this way:

“That the animals common both to the old and new world, are smaller in the latter; that those peculiar to the new, are on a smaller scale; that those which have been domesticated in both, have degenerated in America; and that on the whole the New World exhibits fewer species.”

Though it may be hard to appreciate from our more enlightened 21st century perspective, this was deadly serious stuff — both as science and, more to our point here, as politics; to Jefferson, Buffon’s theory had ominous political implications, for it was, as he put it, “within one step” of the notion that man, too, would degenerate in the New World. Thus, it could and did give a kind of intellectual cover to the notion that man in the New World could not be trusted to govern himself.

Sometimes a picture — or, better yet, a carcass — is worth a thousand words. So out comes the moose; larger than its European counterparts (the reindeer and caribou), its brooding presence in downtown Paris would surely make observers think twice about Buffon’s theory. Jefferson was no fool; he knew full well that one data point does not settle the argument, and he would provide, in his “Notes on the State of Virginia,” a detailed refutation of Buffon’s charge, page after page of careful analysis of the relative sizes of American and European animals.

The hard truths science reveals

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From Steven Weinberg’s “Without God” (The New York Review of Books: 25 September 2008):

Worse, the worldview of science is rather chilling. Not only do we not find any point to life laid out for us in nature, no objective basis for our moral principles, no correspondence between what we think is the moral law and the laws of nature, of the sort imagined by philosophers from Anaximander and Plato to Emerson. We even learn that the emotions that we most treasure, our love for our wives and husbands and children, are made possible by chemical processes in our brains that are what they are as a result of natural selection acting on chance mutations over millions of years. And yet we must not sink into nihilism or stifle our emotions. At our best we live on a knife-edge, between wishful thinking on one hand and, on the other, despair.

4 sources of tension between science and religion

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From Steven Weinberg’s “Without God” (The New York Review of Books: 25 September 2008):

But if the direct conflict between scientific knowledge and specific religious beliefs has not been so important in itself, there are at least four sources of tension between science and religion that have been important.

The first source of tension arises from the fact that religion originally gained much of its strength from the observation of mysterious phenomena – thunder, earthquakes, disease – that seemed to require the intervention of some divine being. There was a nymph in every brook, and a dryad in every tree. But as time passed more and more of these mysteries have been explained in purely natural ways. Explaining this or that about the natural world does not of course rule out religious belief. But if people believe in God because no other explanation seems possible for a whole host of mysteries, and then over the years these mysteries were one by one resolved naturalistically, then a certain weakening of belief can be expected.

…

Of course, not everything has been explained, nor will it ever be. The important thing is that we have not observed anything that seems to require supernatural intervention for its explanation. There are some today who cling to the remaining gaps in our understanding (such as our ignorance about the origin of life) as evidence for God. But as time passes and more and more of these gaps are filled in, their position gives an impression of people desperately holding on to outmoded opinions.

The problem for religious belief is not just that science has explained a lot of odds and ends about the world. There is a second source of tension: that these explanations have cast increasing doubt on the special role of man, as an actor created by God to play a starring part in a great cosmic drama of sin and salvation. We have had to accept that our home, the earth, is just another planet circling the sun; our sun is just one of a hundred billion stars in a galaxy that is just one of billions of visible galaxies; and it may be that the whole expanding cloud of galaxies is just a small part of a much larger multiverse, most of whose parts are utterly inhospitable to life. As Richard Feynman has said, “The theory that it’s all arranged as a stage for God to watch man’s struggle for good and evil seems inadequate.”

…

A third source of tension between science and religious belief has been more important in Islam than in Christianity. Around 1100, the Sufi philosopher Abu Hamid al-Ghazzali argued against the very idea of laws of nature, on the grounds that any such law would put God’s hands in chains. According to al-Ghazzali, a piece of cotton placed in a flame does not darken and smolder because of the heat of the flame, but because God wants it to darken and smolder. Laws of nature could have been reconciled with Islam, as a summary of what God usually wants to happen, but al-Ghazzali did not take that path.

Al-Ghazzali is often described as the most influential Islamic philosopher. I wish I knew enough to judge how great was the impact on Islam of his rejection of science. At any rate, science in Muslim countries, which had led the world in the ninth and tenth centuries, went into a decline in the century or two after al-Ghazzali. As a portent of this decline, in 1194 the Ulama of Córdoba burned all scientific and medical texts.

Nor has science revived in the Islamic world. … in 2002 the periodical Nature carried out a survey of science in Islamic countries, and found just three areas in which the Islamic world produced excellent science, all three directed toward applications rather than basic science. They were desalination, falconry, and camel breeding.

Something like al-Ghazzali’s concern for God’s freedom surfaced for a while in Christian Europe, but with very different results. In Paris and Canterbury in the thirteenth century there was a wave of condemnations of those teachings of Aristotle that seemed to limit the freedom of God to do things like create a vacuum or make several worlds or move the heavens in straight lines. The influence of Thomas Aquinas and Albertus Magnus saved the philosophy of Aristotle for Europe, and with it the idea of laws of nature. But although Aristotle was no longer condemned, his authority had been questioned – which was fortunate, since nothing could be built on his physics. Perhaps it was the weakening of Aristotle’s authority by reactionary churchmen that opened the door to the first small steps toward finding the true laws of nature at Paris and Lisieux and Oxford in the fourteenth century.

There is a fourth source of tension between science and religion that may be the most important of all. Traditional religions generally rely on authority, whether the authority is an infallible leader, such as a prophet or a pope or an imam, or a body of sacred writings, a Bible or a Koran. …

Of course, scientists rely on authorities, but of a very different sort. If I want to understand some fine point about the general theory of relativity, I might look up a recent paper by an expert in the field. But I would know that the expert might be wrong. One thing I probably would not do is to look up the original papers of Einstein, because today any good graduate student understands general relativity better than Einstein did. We progress. Indeed, in the form in which Einstein described his theory it is today generally regarded as only what is known in the trade as an effective field theory; that is, it is an approximation, valid for the large scales of distance for which it has been tested, but not under very cramped conditions, as in the early big bang.

We have our heroes in science, like Einstein, who was certainly the greatest physicist of the past century, but for us they are not infallible prophets.

Intelligent Design? How about a flat earth?

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From Steven Weinberg’s “Without God” (The New York Review of Books: 25 September 2008):

Contradictions between scripture and scientific knowledge have occurred again and again, and have generally been accommodated by the more enlightened among the religious. For instance, there are verses in both the Old and New Testament that seem to show that the earth is flat, and as noted by Copernicus (quoted by Galileo in the same letter to Christina) these verses led some early Church fathers like Lactantius to reject the Greek understanding that the earth is a sphere, but educated Christians long before the voyages of Columbus and Magellan had come to accept the spherical shape of the earth. Dante found the interior of the spherical earth a convenient place to store sinners.

What was briefly a serious issue in the early Church has today become a parody. The astrophysicist Adrian Melott of the University of Kansas, in a fight with zealots who wanted equal time for creationism in the Kansas public schools, founded an organization called FLAT (Families for Learning Accurate Theories). His society parodied creationists by demanding equal time for flat earth geography, arguing that children should be exposed to both sides of the controversy over the shape of the earth.

Michael Pollan’s rules for food

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Image by rsgranne via Flickr

From John Schwenkler’s “Food for thought: renewing the culinary culture should be a conservative cause” (The American Conservative: 2008):

Michael Pollan’s In Defense of Food deconstructs the pretensions of “food science” in often hilarious fashion and distills all you need to know about eating into three directives: Eat food (as opposed to things with unfamiliar or unpronounceable ingredients, packaged “food products” that make government-sanctioned health claims, and pretty much anything from the middle aisles of the grocery store); Not too much (go for quality over quantity, and eat at a table, with others); Mostly plants (in unprocessed form when possible).

More on Google’s server farms

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From Joel Hruska’s “The Beast unveiled: inside a Google server” (Ars Technica: 2 April 2009):

Each Google server is hooked to an independent 12V battery to keep the units running in the event of a power outage. Data centers themselves are built and housed in shipping containers (we’ve seen Sun pushing this trend as well), a practice that went into effect after the brownouts of 2005. Each container holds a total of 1,160 servers and can theoretically draw up to 250kW. Those numbers might seem a bit high for a data center optimized for energy efficiency—it breaks down to around 216W per system—but there are added cooling costs to be considered in any type of server deployment. These sorts of units were built for parking under trees (or at sea, per Google’s patent application).

By using individual batteries hooked to each server (instead of a UPS), the company is able to use the available energy much more efficiently (99.9 percent efficiency vs. 92-95 percent efficiency for a typical battery) and the rack-mounted servers are 2U with 8 DIMM slots. Ironically, for a company talking about power efficiency, the server box in question is scarcely a power sipper. The GA-9IVDP is a custom-built motherboard—I couldn’t find any information about it in Gigabyte’s website—but online research and a scan of Gigabyte’s similarly named products implies that this is a Socket 604 dual-Xeon board running dual Nocono (Prescott) P4 processors.

Why we can easily remember jingles but not jokes

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From Natalie Angier’s “In One Ear and Out the Other” (The New York Times: 16 March 2009):

In understanding human memory and its tics, Scott A. Small, a neurologist and memory researcher at Columbia, suggests the familiar analogy with computer memory.

We have our version of a buffer, he said, a short-term working memory of limited scope and fast turnover rate. We have our equivalent of a save button: the hippocampus, deep in the forebrain is essential for translating short-term memories into a more permanent form.

Our frontal lobes perform the find function, retrieving saved files to embellish as needed. And though scientists used to believe that short- and long-term memories were stored in different parts of the brain, they have discovered that what really distinguishes the lasting from the transient is how strongly the memory is engraved in the brain, and the thickness and complexity of the connections linking large populations of brain cells. The deeper the memory, the more readily and robustly an ensemble of like-minded neurons will fire.

This process, of memory formation by neuronal entrainment, helps explain why some of life’s offerings weasel in easily and then refuse to be spiked. Music, for example. “The brain has a strong propensity to organize information and perception in patterns, and music plays into that inclination,” said Michael Thaut, a professor of music and neuroscience at Colorado State University. “From an acoustical perspective, music is an overstructured language, which the brain invented and which the brain loves to hear.”

A simple melody with a simple rhythm and repetition can be a tremendous mnemonic device. “It would be a virtually impossible task for young children to memorize a sequence of 26 separate letters if you just gave it to them as a string of information,” Dr. Thaut said. But when the alphabet is set to the tune of the ABC song with its four melodic phrases, preschoolers can learn it with ease.

And what are the most insidious jingles or sitcom themes but cunning variations on twinkle twinkle ABC?

Really great jokes, on the other hand, punch the lights out of do re mi. They work not by conforming to pattern recognition routines but by subverting them. “Jokes work because they deal with the unexpected, starting in one direction and then veering off into another,” said Robert Provine, a professor of psychology at the University of Maryland, Baltimore County, and the author of “Laughter: A Scientific Investigation.” “What makes a joke successful are the same properties that can make it difficult to remember.”

This may also explain why the jokes we tend to remember are often the most clichéd ones. A mother-in-law joke? Yes…

Facebook & the Dunbar number

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From The Economist‘s “Primates on Facebook” (26 February 2009):

Robin Dunbar, an anthropologist who now works at Oxford University, concluded that the cognitive power of the brain limits the size of the social network that an individual of any given species can develop. Extrapolating from the brain sizes and social networks of apes, Dr Dunbar suggested that the size of the human brain allows stable networks of about 148. Rounded to 150, this has become famous as “the Dunbar number”.

Many institutions, from neolithic villages to the maniples of the Roman army, seem to be organised around the Dunbar number. Because everybody knows everybody else, such groups can run with a minimum of bureaucracy. But that does not prove Dr Dunbar’s hypothesis is correct, and other anthropologists, such as Russell Bernard and Peter Killworth, have come up with estimates of almost double the Dunbar number for the upper limit of human groups. Moreover, sociologists also distinguish between a person’s wider network, as described by the Dunbar number or something similar, and his social “core”. Peter Marsden, of Harvard University, found that Americans, even if they socialise a lot, tend to have only a handful of individuals with whom they “can discuss important matters”. A subsequent study found, to widespread concern, that this number is on a downward trend.

The rise of online social networks, with their troves of data, might shed some light on these matters. So The Economist asked Cameron Marlow, the “in-house sociologist” at Facebook, to crunch some numbers. Dr Marlow found that the average number of “friends” in a Facebook network is 120, consistent with Dr Dunbar’s hypothesis, and that women tend to have somewhat more than men. But the range is large, and some people have networks numbering more than 500, so the hypothesis cannot yet be regarded as proven.

What also struck Dr Marlow, however, was that the number of people on an individual’s friend list with whom he (or she) frequently interacts is remarkably small and stable. The more “active” or intimate the interaction, the smaller and more stable the group.

Thus an average man—one with 120 friends—generally responds to the postings of only seven of those friends by leaving comments on the posting individual’s photos, status messages or “wall”. An average woman is slightly more sociable, responding to ten. When it comes to two-way communication such as e-mails or chats, the average man interacts with only four people and the average woman with six. Among those Facebook users with 500 friends, these numbers are somewhat higher, but not hugely so. Men leave comments for 17 friends, women for 26. Men communicate with ten, women with 16.

What mainly goes up, therefore, is not the core network but the number of casual contacts that people track more passively. …

Put differently, people who are members of online social networks are not so much “networking” as they are “broadcasting their lives to an outer tier of acquaintances who aren’t necessarily inside the Dunbar circle,” says Lee Rainie, the director of the Pew Internet & American Life Project, a polling organisation.