Shooting Artillery from the Hip

Wednesday, November 16th, 2011

Don’t try this at home:



I’m reminded of the Japanese “knee” mortar — which wasn’t meant to be fired while propped on the leg; it just looked like it was.

(Hat tip to Buckethead’s Veil War site.)

Patient BW

Tuesday, November 15th, 2011

Russell Saunders of The League of Ordinary Gentlemen presents the medical records of one Patient BW:

DOB: 2/16/1971
Occupation: Industrialist
Insurance: Self-pay
Emergency Contact: Dick Grayson, XXX-269-9637

Interval History: Patient was seen for his last annual physical approximately one year ago. Since that time he has had numerous visits for acute illnesses or injuries, generally accompanied either by his companion Mr. Grayson or Alfred, a senior member of his household staff. These recent maladies appear to be in keeping with the pattern that has emerged over the past several years, in which significant medical problems are associated with odd or incongruous explanations. Most recently, patient was seen for numerous areas of lower extremity cutaneous blistering, erythema and thickening, consistent with moderate to severe frostbite. Patient had reportedly gotten lost while camping in the mountains, but could not account for how he had sustained these injuries in mid-August.

Past Medical History: As stated, patient has a somewhat lengthy and complicated medical history, best summarized by system —

[...]

(Hat tip to Law and the Multiverse, which goes on to discuss some of the legal complications.)

How Not to Hit Your Target

Tuesday, November 15th, 2011

I’ve mocked gangsta-style assault tactics before, and now we have some Libyan lessons in how not to hit your target:



Conversely, most combat really is about making a lot of noise, and they’re doing that just fine.

The Strength of the Wolf is in the Pack’s Distributed Behavioral Model

Monday, November 14th, 2011

Flocking seems like a complex behavior that should require careful collaboration between all the birds involved, but Craig Reynolds demonstrated back in 1986 that simulated birds, or boids, would realistically flock if they just followed three basic steering behaviors:

  • Separation: steer to avoid crowding local flockmates.
  • Alignment: steer towards the average heading of local flockmates.
  • Cohesion: steer to move toward the average position of local flockmates.

He went on to demonstrate all sorts of Steering Behaviors For Autonomous Characters, including pursuit and evasion — but not pack-hunting.

Now C. Muro et al. have demonstrated that the sophisticated teamwork of a wolf pack also stems from simple rules:

We have produced computational simulations of multi-agent systems in which wolf agents chase prey agents. We show that two simple decentralized rules controlling the movement of each wolf are enough to reproduce the main features of the wolf-pack hunting behavior: tracking the prey, carrying out the pursuit, and encircling the prey until it stops moving.

The rules are (1) move towards the prey until a minimum safe distance to the prey is reached, and (2) when close enough to the prey, move away from the other wolves that are close to the safe distance to the prey.

The hunting agents are autonomous, interchangeable and indistinguishable; the only information each agent needs is the position of the other agents. Our results suggest that wolf-pack hunting is an emergent collective behavior which does not necessarily rely on the presence of effective communication between the individuals participating in the hunt, and that no hierarchy is needed in the group to achieve the task properly.

Precision 120

Monday, November 14th, 2011

Back in February, the US Army decided to send smart mortars into the hills of Afghanistan, and soon the first precision 120 was fired in anger — where it put a shell within four meters of its intended target.

The Army’s M120 120mm mortar can launch shells 7,000 meters, and those shells have a 70-meter killing radius. Landing within 10 meters (half the time) may not seem necessary, but many targets aren’t in the open.

An ATK rep explains their mini-JDAM:

The Footage the NFL Won’t Show You

Sunday, November 13th, 2011

Reed Albergotti describes the footage the NFL won’t show you:

For decades, NFL TV broadcasts have relied most heavily on one view: the shot from a sideline camera that follows the progress of the ball. Anyone who wants to analyze the game, however, prefers to see the pulled-back camera angle known as the “All 22.”

While this shot makes the players look like stick figures, it allows students of the game to see things that are invisible to TV watchers: like what routes the receivers ran, how the defense aligned itself and who made blocks past the line of scrimmage.

By distributing this footage only to NFL teams, and rationing it out carefully to its TV partners and on its web site, the NFL has created a paradox. The most-watched sport in the U.S. is also arguably the least understood. “I don’t think you can get a full understanding without watching the entirety of the game,” says former head coach Bill Parcells. The zoomed-in footage on TV broadcasts, he says, only shows a “fragment” of what happens on the field.
[...]
Charley Casserly, a former general manager who was a member of the NFL’s competition committee, says he voted against releasing All-22 footage because he worried that if fans had access, it would open players and teams up to a level of criticism far beyond the current hum of talk radio. Casserly believed fans would jump to conclusions after watching one or two games in the All 22, without knowing the full story.

“I was concerned about misinformation being spread about players and coaches and their ability to do their job,” he said. “It becomes a distraction that you have to deal with.” Now an analyst for CBS, Casserly takes an hour-and-a-half train once a week to NFL Films headquarters in Mt. Laurel, N.J. just to watch the All-22 film.

Lonnie Marts, a former linebacker for the Jacksonville Jaguars, says there are thousands of former NFL players who could easily pick apart play-calling and player performance if they had access to this film. “If you knew the game, you’d know that sometimes there’s a lot of bonehead plays and bonehead coaching going on out there,” he says.

Home Is Where the School Is

Sunday, November 13th, 2011

Back in 1975, before the homeschooling movement got going, the New York Times published a piece, Home Is Where the School Is, about a family that had decided to keep their four kids out of school:

Each person has his own definition of a good school. For me, a good school has come to mean one that encourages children to learn and to love learning in a happy, relaxed atmosphere. A good school is not one that maintains strict discipline, is not one that boasts a high reading score on all grade levels, is not one that sends at high percentage of its students on to bigger and better schools. A good school is a community of teachers and students engaged in an exhilarating search for knowledge and self-awareness. Whether or not a school is good has nothing to do with test scores or the number of degrees shared by the faculty. It has to do with the teachers’ attitudes toward students and their perception of what education is all about. I would send my children to a school that fostered a family feeling. However, I have not been in one American public school that comes close to my definition.

This lack of good schools has sent some friends to the suburbs with great reluctance, and has caused others to spend an inordinate amount of money on private schools. I have rejected these two “solutions” to the problem because I want to live in the city and bocause schools in the suburbs are not any better than their city Cousins. Safer, perhaps, but I would not want my children to attend them, either. As for private schools, my husband, Jack, and I cannot afford them, and if we could I would like to think that we would still not send our children to them.

The action we have taken is, of course, illegal,* but a social worker from the St. Louis Board of Education who was sent to investigate our children’s absence from school told us she thought we had the right to educate our children ourselves and would support us in our effort to do so. In addition, she felt our children were happy and well-adjusted and obviously receiving an excellent education at home, and she recommended to the local school principal that we be left alone, in part because we were going to Mexico for a brief period. We had to1d the social worker during a long, friendly talk that we would refuse to send the children to school if we were ordered to do so and that we were prepared to go to court. Jack and I felt that we would be dishonest toward ourselves and our children if we were to do otherwise.

The mother cites Summerhill, by A.S. Neill, How Children Learn, by John Holt, and De-Schooling Society, by Ivan Illich, as pushing her toward something like unschooling.

One of her daughters tells her story of life with home-schooling anarchists for parents — and the transition to “real” school:

Our transition to formal schooling happened to coincide with the moment St. Louis was trying to address the problem of its segregated school system. To avoid forced busing, the city decided to open several magnet schools with specialized curricula to attract students of all races from around the city. To my parents (perhaps conveniently), these schools sounded as if they offered the kind of progressive learning atmosphere they had been seeking. They quickly enrolled us. James and I were to attend the school dedicated to math and science; Mary and John the one focused on performing arts. We had no transcripts but were readily accepted. These brave new academic worlds needed white faces to succeed.

The night before our first day of school, instead of staying up worrying about what it would be like, we looked forward to it as “the latest adventure,” John recalls, “like moving to Mexico or England.” That sentiment was shared by James: “I was cocksure of myself because I thought what we had done was very cool.”

One early September morning, our parents dropped us off in front of our respective schools. They didn’t walk us into the building. They didn’t introduce us to our new teachers. They didn’t even tell us what grade we were in. John remembers it this way: “Luckily, Mary and I deduced that, because I was 10, I would go into the lowest grade (fifth), and as an 11-year-old, she would go into the next (sixth).” As the youngest, only 5 that fall, I burst into tears when I was separated from my brother James. I hadn’t been warned that we’d be in different classes. When I questioned my mother about why she left us to puzzle all this out on our own, she defended herself, saying, “I assumed you’d know what to do.”

Going from yoga and tea (with parents) to gym and a packed lunchroom was a shock to our systems. And feeling lost wasn’t the hardest part. Looking like Goodwill poster children was. “I thought I looked great in my huaraches and striped, fiesta-themed peasant pants,” Mary says. “But everyone else in the sixth grade was wearing a Led Zeppelin T-shirt and jeans. I was not too naïve to realize I needed to get some jeans. Quick.”

Everything about the single-file, cliquey public-school system was counter to our counter-lifestyle. “I was in math class,” John recalls, “sitting at a desk wondering, Am I going to have to sit in this same spot every single day from now on? The teacher was grilling kids on decimals, which I did not understand. To me it just looked like a dot! Then the teacher asked me to recite the nine multiplication table. I answered, totally nonchalantly, ‘I don’t know it.’ The teacher paused, eyes zeroing in on me, and said, ‘Boy, I’m gonna have fun with you.’ ” Slowly the meaning of being unable to recite lines from “Star Wars” (we’d never seen Hollywood movies) and not having feathered hair began to sink in. We were weirdos.

In 1978, NPR interviewed my mother about her home-schooling experiment when a multistate teachers strike left thousands of parents wondering what to do with their homebound children. After asking, “I’m curious about how you basically stood it all day,” Cokie Roberts repeatedly pressed my mother about our socialization. To gain independence and prepare children for the realities of adulthood, didn’t they need to be with their peers and suffer all the harsh experiences that entails?

“I don’t know if children should be put through bad school situations just so they can be socialized,” my mom replied. It was a noble sentiment, but unfortunately bad situations were exactly what was in store for us, especially for John and James. “I was very green, and a few days into school this kid pushed me so hard I fell over a desk,” John remembers. “I just couldn’t understand. Why would a kid want to fight me? At home, James and I were like two peas in a pod.”

At my schoolyard, James, in third grade, was instantly picked on. Within the first week, he recalls, “an older kid kicked me in the butt really hard. The other boys were laughing. A girl finally told me someone put a ‘kick me’ sign on my back. I never heard of that, teasing and pranks.” James was also taken to the back of the bus and “punched incessantly” for the better part of grade school. “Oh, God, it was awful.” James never told my parents. He just “took it.” Was Cokie Roberts right? James thinks so. “I wasn’t around kids,” he says. “The four of us were never threatened, so I didn’t learn how to stick up for myself.”

My mother worried that when we went to school, she would lose her identity. But she flourished in her new job as an editor at St. Louis magazine. We were the ones who lost ours. Mary never told anyone she’d been home-schooled. “By sixth grade I knew that kids weren’t, especially back then. When you’re a kid, you don’t want to be different, you want to fit in.” Mary conformed quickly and even liked the rules, like having to “write your name at the top of paper.” John was picked on until he fought back, pushing his tormentor over a desk. James learned how to fit in by observing the other kids and copying what they did. “It was a chameleon act. I was never the most popular, but I eventually made friends.”

Academically, my siblings were all over the map. Mary, the avid reader, did well without much effort. “And if I didn’t understand something, I wasn’t afraid to raise my hand and ask.” John was taken under the wing of Mr. I’m Gonna Have Fun With You, who drilled him on math one on one until John caught up. James excelled in subjects like science and history but had a hard time with reading. “It was very stressful,” he remembers. “I couldn’t get it.” Yet according to my mother’s Times article, “the amazing thing about my experience with James learning to read is that it is painless.” Was this an extension of her policy to “criticize the children infrequently”?

James now wishes our parents had made reading a priority for him. “It would have made my life a lot easier,” he recalls. “Struggling wasn’t fun. I was frustrated that I couldn’t do better in school.” I can vividly remember him in the sixth grade, crying about his drama class. “Because when I read aloud,” James says, “I would trip up over simple words.” But he did have the wherewithal to seek help. In eighth grade, James was so concerned about his atrocious spelling that he asked a teacher what he could do. She gave him a third-grade spelling book and told him to start on Page 1.

These academic shortcomings can be traced to my mom’s desire for educational spontaneity. At first, as she wrote, she was “careful to keep exactly to the schedule.” But she soon relaxed. “Classes were canceled whenever something interesting materialized. How to open an art-house movie theater was a course,” she said. “That’s what you did for months instead of having classes.” While watching “The Blue Angel” is fun, inasmuch as a psychosexual German film can be for a child, it doesn’t help prepare you for the realities of a typical classroom or provide you with building blocks for the fundamentals.

James has conflicting feelings about my parents’ teaching style. He acknowledges that his own son, Zac, who was introduced to formal education early, has many of his own learning difficulties. But his approach is the opposite of my parents’. “I’m on top of Zac,” James told me. “I don’t want him to fall behind like I did.”

Hey, Bro, That’s My Little Pony!

Saturday, November 12th, 2011

Even the Wall Street Journal is discussing My Little Pony‘s surprising popularity with men, or bronies:

It wasn’t supposed to be this way. When Hasbro Inc. and Discovery Communications Inc. revived the “My Little Pony” franchise on a new television network called The Hub, an executive told investors the remake was for “the three- to six-year-old girl and her mom, who has fond memories of ‘My Little Pony’ from her childhood.”
[...]
The Hub Chief Executive Margaret Loesch said she is aware of the show’s strong following among young males, but says the majority of adult viewers are still overwhelmingly female. “I think part of why it resonates is the funky, flying mystical creatures,” she says. “The combination of plenty of action and heart gives it broad appeal.”

Some bronies disdain Hasbro’s Pony figurines, which they find too commercial and not “show-accurate.” A pet peeve: On TV, Princess Celestia is a heavenly white, but the toy is cotton-candy pink. So the bronies frequently buy unofficial merchandise from each other, including treasures such as pipe-cleaner Ponies.

Making the Grade: Why the Cheapest Maple Syrup Tastes Best

Saturday, November 12th, 2011

When I read the headline, Making the Grade: Why the Cheapest Maple Syrup Tastes Best, I assumed that high-grade syrup would have fewer “impurities” — and I was right.

What did surprise me was maple syrup’s long history in progressive politics:

After the Revolution, Americans looked at the maple tree in a new light. To the eminent Philadelphia patriot and physician Benjamin Rush, maple sugar seemed perfectly tailored to the new republic. Here was a commodity that could compete in a global market, bolstering the independence of yeoman farmers, and demonstrating the superiority of free labor. It tapped an abundant resource, required only a small amount of labor, and used supplies most farmers already owned. Best of all, it would destroy the market for Caribbean sugar cane, produced by slaves laboring in horrifying conditions. Rush set down his reflections in the form of a letter to his friend Thomas Jefferson, which he presented publicly in 1791, concluding:

I cannot help contemplating a sugar maple tree with a species of affection and even veneration, for I have persuaded myself, to behold in it the happy means of rendering the commerce and slavery of our African brethren, in the sugar islands as unnecessary, as it has always been inhuman and unjust.

A minor maple sugar bubble ensued, mixing frontier land speculation with fervent abolitionism. One Pennsylvania Quaker, enthralled by the idea of deriving profit from virtue, organized an association for the purpose, dispatching a sample to the president. Washington expressed his thanks for the sugar, which he was “much pleased to find of so good a quality.” William Cooper hitched his fledgling town to the enterprise. Dutch investors organized a consortium.

All of these efforts failed commercially. Rush had praised maple sap for its ability to produce refined sugar of “superior purity,” offering sweetness without any flavor. But as a refined commodity, competing on cost alone, maple sugar simply could not match the low-priced products of the cane plantations. The late-season sap, with its strong flavor, certainly offered a distinctive product, but not one capable of attracting consumers who had access to more refined alternatives. Rush speculated that it might find some commercial outlet, anyway, if it could be processed into something more desirable. “It affords a most agreeable molasses,” he wrote, suggesting that it “might compose the basis of a pleasant summer beer.” It was at least as well suited for rum, but Rush piously expressed his hope that “this precious juice will never be prostituted by our citizens to this ignoble purpose.”

It was, of course, but not often. Most maple syrup continued to be turned into sugar by frugal farm families for use as a homely sweetener, with any surplus bringing in a small amount of cash. And as a symbol of freedom, it remained potent. Adherents of the Free Produce movement shunned the products of slave labor, and sought out maple sugar. “So long as the maple forests stand,” urged a Vermont almanac in 1844, “suffer not your cup to be sweetened by the blood of slaves.”

The artist Eastman Johnson met the outbreak of the Civil War with a series of paintings depicting maple sugaring operations, blending their abolitionist virtues with nostalgia for a simpler age. Those who left their farms for burgeoning cities, or moved west after the war, brought with them a similar wistfulness for the taste of the maple tree. Sugar was relatively cheap and abundant; it was the flavor of the syrup, which their forebears had never quite succeeded in eliminating, that these migrants came to crave. Vermont Maple Syrup became a valuable brand. By the end of the nineteenth century, the Department of Agriculture scorned the idea of refining maple sap into white sugar, noting that maple sugar and syrup were “prized for their peculiar flavor, and are luxuries rather than staple articles of the daily diet.”

The continuing emphasis on a light, delicate flavor, though, made the product particularly susceptible to adulteration. Shelves filled with syrup cut with glucose, sorghum, or corn; some purveyors added decoctions of maple wood, hickory, or even of corn cobs. Others relied on appearance alone, boiling brown sugar.  By the beginning of the twentieth century, one reforming scientist estimated the amount of Vermont Maple Syrup sold every year at ten times the actual production; another cracked that a dense maple forest must stretch from the east coast to Chicago, just to supply the necessary sap.

So maple syrup became a crucial symbol in a new crusade, this time to secure the authenticity of the food supply. Consumers were incensed by the notion that they might be paying premium prices for brown sugar water. Their outrage at the violation of this iconic American product helped rally support for the Pure Food and Drug Act. The law was passed in 1906, and the USDA’s Bureau of Chemistry set about cleaning up the nation’s grocery shelves.

The pure food and drug laws restored truth to labeling, but they couldn’t keep consumers from seeking out cheaper alternatives. Most of these ersatz syrups took pains to replicate the light color and mild flavor of premium syrup, associating themselves with the old notion of refinement. Mapleine, a flavoring launched in 1905, emphasized its ability to reproduce “the delicate elusive tang of the Maple Sap,” reminding consumers that “if it isn’t delicate, it isn’t delicious.”

Not Quite Salamander Territory

Friday, November 11th, 2011

It’s not quite salamander territory, but a new Pentagon-backed project out of the University of Pittsburgh is regrowing soldiers’ muscles from pig cells:

Badylak and colleagues at the University of Pittsburgh’s McGowan Institute for Regenerative Medicine are only one of several groups leading far-out research projects that are part of the Pentagon’s Armed Forces Institute of Regenerative Medicine (AFIRM), a massive, $250 million undertaking meant to quickly usher regenerative medicine into the mainstream. Already, military brass have fast-tracked clinical trials for “bone cement” to replace metal screws and plates and accelerated the sophistication of face and hand transplants — a handful of which have now been conducted in the United States.

The tantalizing prospect of regrowing tissue using Badylak’s technique first made headlines in 2007, when he announced the successful regrowth of a small portion of fingertip using a concoction based on cells derived from a pig’s bladder. His approach with muscle tissue is similar: Surgeons start by implanting what’s called an extracellular matrix, a sort of “cellular glue,” whose key components are growth factor proteins from pig bladders. Those proteins trigger the body’s own stem cells to flock to the area and initiate the process of tissue growth and wound repair — which adult muscles normally wouldn’t do. Combined with an intensive rehab program to essentially “exercise” the nascent muscle, the body is able to restore not only basic muscle tissue, but the tendons and nerves that are necessary for function.

Part Two of The Veil War

Friday, November 11th, 2011

Part Two of Buckethead’s Marines-vs-Goblins tale, The Veil War, is ready for action:

“Alright then. We’re on. Prep the mortar teams — I’m sure those bastards don’t realize they’re in range of our mortars. After the planes hit, lay it on them, as fast as you can — and concentrate on the near side of the south camp. The other bastards know us. We need to introduce ourselves the new arrivals. We’ll hit them on foot from the far side.”

The Final Weapon

Thursday, November 10th, 2011

In Steinbeck’s The Acts of King Arthur and His Noble Nights, the Lady Lyne lays down the law for her young protegé, Sir Ewain:

Now — I will lay down the law and you will learn it word by word, and every word must be edged with fire. This is the law. The purpose of fighting is to win. There is no possible victory in defense. The sword is more important than the shield, and skill is more important than either. The final weapon is the brain, all else is supplementary.

Private Navy to Start Within Five Months

Thursday, November 10th, 2011

Convoy Escort Programme Ltd. will be deploying its private navy — of seven former naval patrol boats, each with eight armed men aboard — to the Gulf of Aden within the next five months:

The bullet-proofed boats will charge about $30,000 per ship traveling in a convoy of around four vessels over three to four days, he said.

“We are going to be a deterrent,” Campbell said. “We are not in the business of looking for trouble but if anybody tries to attack a vessel we are escorting, our security teams will deploy force if they have to act in self defence.”

Attacks reached a record this year and cost the global economy an estimated $7 billion to $12 billion annually, according to the United Nations’ International Maritime Organization. About 23,000 vessels carrying $1 trillion of trade pass through the Gulf of Aden every year, the U.K. government estimates.

About 25 percent of vessels that sail in the Gulf of Aden and Indian Ocean use armed guards, and their owners pay $120 million a year to London insurers for protection against the risks of pirate hijacks, Andrew Voke, chairman of the Lloyd’s Market Association marine committee, told a U.K. parliamentary hearing in June.

There is a shortage of naval assets protecting ships from piracy, said Campbell, whose company is looking for investors to complete the boat purchases. The convoys will police the same 490 nautical-mile long stretch of water within the Gulf of Aden, known as Internationally Recognized Transit Corridor, as the world’s state-backed navies.

The King of Human Error

Wednesday, November 9th, 2011

Michael Lewis describes the King of Human Error, Daniel Kahneman, and his new book, Thinking, Fast and Slow:

He was born in 1934 and grew up a Jew in France during the German occupation. His boyhood had been punctuated by dramatic examples of the unpredictability of human behavior and the role of accident in life. His father was captured in a German dragnet that sent many French Jews to die in concentration camps—but then, at the last moment, he was mysteriously released. With his parents and his sister, Danny fled from Paris to the South of France and then to Limoges, where they lived in a chicken coop at the back of a rural pub. One evening he violated the curfew for Jews, and found himself face-to-face in the street with a man in the black uniform of the German SS. The man picked him up and hugged him, then showed him a picture of his own little boy and gave him money. Later in the war, after his family had disguised their Jewish identity, he watched a young Frenchman, a Nazi collaborator and passionate anti-Semite, be well enough fooled by his sister’s disguise to fall in love with her. (“After the Liberation she took enormous pleasure in finding him and letting him know he had fallen in love with a Jew.”) For a time his father held a job, but it was a long bus ride from the chicken coop, and he was away during the week. On weekends Danny and his mother would watch the bus stop from their house, waiting for his father’s bus to arrive. Each time was a cliff-hanger: he knew his father was in constant danger and was never sure that he would come home. “I remember waiting with my mother, and as we waited we darned socks,” he said. “And so darning socks for me has always been an incredibly anxious activity.” His relationship to his father, whom he adored, was further queered by a mere typo; in the phony identity papers his father procured for them there was a mistake. Danny’s last name had been printed as “Godet”; his father’s had been printed as “Cadet.” Because of this typo Danny was required to address his father as “uncle.”

Through it all his father suffered from diabetes, which, after the Germans arrived, went untreated. On the day of his death, in 1944, he took Danny, then 10 years old, out for a walk. “He must have known he was dying,” says Kahneman. “I remember him saying it was now time for me to become the man of the family. I was really angry about him dying. He had been good. But he had not been strong.”

After the war his mother moved the family to what was then Palestine and would soon become Israel, where he became first a platoon commander in the Israeli Defense Forces and then a professor of psychology. It apparently never seriously occurred to him to become anything else. He was always bookish, precocious, and curious about what made people tick. His wartime experience may or may not have heightened his curiosity about the inner workings of the human mind; at any rate, he’s reluctant to give the Germans too much credit for his career choice. “People say your childhood has a big influence on who you become,” he says. “I’m not at all sure that’s true.”
[...]
Kahneman walks the lay reader (i.e., me) through the research of the past few decades that has described, as it has never been described before, what appear to be permanent kinks in human reason. The story he tells has two characters—he names them “System 1” and “System 2”—that stand in for our two different mental operations. System 1 (fast thinking) is the mental state in which you probably drive a car or buy groceries. It relies heavily on intuition and is amazingly capable of misleading and also of being misled. The slow-thinking System 2 is the mental state that understands how System 1 might be misled and steps in to try to prevent it from happening. The most important quality of System 2 is that it is lazy; the most important quality of System 1 is that it can’t be turned off. We pass through this life on the receiving end of a steady signal of partially reliable information that we only occasionally, and under duress, evaluate thoroughly. Through these two characters the author describes the mistakes your mind is prone to make and then explores the reasons for its errors.

Jaime Lalinde presents a quiz based on Kahneman’s work. Try it.

British SBS in Afganistan

Wednesday, November 9th, 2011

This footage of the British SBS in Afganistan, in the early days of the war, raises some questions:



This is my question: Do SBS commandos normally fire their machine-guns from the hip?

(Hat tip to Kit Up!.)