The Atavist’s Futurist

January 27th, 2012

Ray Bradbury is the atavist’s futurist, Daniel J. Flynn says:

The obvious reading of Fahrenheit 451 reveals a story about censorship. This view lends itself to competing left-right interpretations, making Fahrenheit 451 the unique politically charged book that transcends the controversies of its day and finds welcome in conflicting political camps. Is it about McCarthyism or political correctness? The flexibility of political readings helps explain the 5 million copies in print. But the more subtle and important theme involves passive entertainment displacing the life of the mind. It is less about right-left than about smart-stupid.

Before Fahrenheit 451’s firemen came to burn books, the public deserted books. “I remember the newspapers dying like huge moths,” the story’s Professor Faber remarks. “No one wanted them back. No one missed them.” In attempting to please the masses, publishers took care not to offend the market and produced books “leveled down to a sort of pastepudding norm.” Attention spans waned in the wake of competing technology. “Picture it. Nineteenth-century man with his horses, dogs, carts, slow motion. Then, in the twentieth-century, speed up your camera. Books cut shorter. Condensations. Digests. Tabloids. Everything boils down to the gag, the snap ending.”

In the novel, people stopped reading before the state stopped them from reading. The predictable result was an ill-educated society fit for neither leisure nor the ballot. Women discuss voting for a candidate because of his handsome looks and abdicate the responsibilities of motherhood by dumping their children in front of television sets. The over-medicated, air-conditioned culture is awash in suicide, abortion, child neglect, and glassy-eyed passivity. Sound familiar?

Bradbury wrote from Los Angeles, the capital of mindless distraction. But he did so inside a citadel of the book: the library. Plugging away at coin-operated typewriters in the basement of UCLA’s library, the cash-strapped father finished the initial draft of Fahrenheit 451 in nine days for $9.80. One version was serialized in early numbers of Playboy, an ironic venue for both its constant attention from would-be firemen and its place among magazines as a favorite of readers with something other than literature on their minds. But that was Ray Bradbury, bashing the vacuity of television on “The Ray Bradbury Theater” cable show, highlighting the sins of science through science fiction, lambasting shrinking attention spans through the shortest of short stories.

The Pleistocene Yeti

January 27th, 2012

Did bigfoot really exist? Well, Gigantopithecus, the Pleistocene Yeti, did, in India, until 300,000 years ago:

Scientists first learned of Gigantopithecus in 1935, when Ralph von Koenigswald, a German paleoanthropologist, walked into a pharmacy in Hong Kong and found an unusually large primate molar for sale. Since then, researchers have collected hundreds of Gigantopithecus teeth and several jaws in China, Vietnam and India. Based on these fossils, it appears Gigantopithecus was closely related to modern orangutans and Sivapithecus, an ape that lived in Asia about 12 to 8 million years ago. With only dentition to go on, it’s hard to piece together what this animal was like. But based on comparisons with gorillas and other modern apes, researchers estimate Gigantopithecus stood more than 10 feet tall and weighed 1,200 pounds (at most, gorillas only weigh 400 pounds). Given their size, they probably lived on the ground, walking on their fists like modern orangutans.

Fortunately, fossil teeth do have a lot to say about an animal’s diet. And the teeth of Gigantopithecus also provide clues to why the ape disappeared.

The features of the dentition — large, flat molars, thick dental enamel, a deep, massive jaw — indicate Gigantopithecus probably ate tough, fibrous plants (similar to Paranthropus). More evidence came in 1990, when Russell Ciochon, a biological anthropologist at the University of Iowa, and colleagues placed samples of the ape’s teeth under a scanning electron microscope to look for opal phytoliths, microscopic silica structures that form in plant cells. Based on the types of phyoliths the researchers found stuck to the teeth, they concluded Gigantopithecus had a mixed diet of fruits and seeds from the fig family Moraceae and some kind of grasses, probably bamboo. The combination of tough and sugary foods helps explain why so many of the giant ape’s teeth were riddled with cavities. And numerous pits on Gigantopithecus‘s teeth — a sign of incomplete dental development caused by malnuntrition or food shortages — corroborate the bamboo diet. Ciochon’s team noted bamboo species today periodically experience mass die-offs, which affect the health of pandas. The same thing could have happened to Gigantopithecus.

Further evidence of Gigantopithecus‘ food preferences and habitat was published last November. Zhao LingXia of the Chinese Academy of Sciences and colleagues analyzed carbon isotopes in a sample of Gigantopithecus teeth. Plants have different forms of carbon based on their type of photosynthesis; this carbon footprint is then recorded in the teeth of animals that eat plants. The team determined Gigantopithecus — and the animals living alongside it, such as deer, horses and bears — ate only C3 plants, evidence the ape lived in a forested environment. This work also supports the proposed bamboo diet, as bamboo is a C3 plant.

So what happened to this Pleistocene Yeti? Zhang’s team suggested the rise of the Tibetan plateau 1.6 million to 800,000 years ago altered the climate of South Asia, ushering in a colder, drier period when forests shrank.

The Caging of America

January 27th, 2012

Adam Gopnik addresses the caging of America:

Over all, there are now more people under “correctional supervision” in America — more than six million — than were in the Gulag Archipelago under Stalin at its height.

It should be obvious why there weren’t too many prisoners in the gulags at any one time — they tended to die. Keeping prisoners fed and housed is expensive; only advanced economies can afford it — advanced economies like ours:

The accelerating rate of incarceration over the past few decades is just as startling as the number of people jailed: in 1980, there were about two hundred and twenty people incarcerated for every hundred thousand Americans; by 2010, the number had more than tripled, to seven hundred and thirty-one. No other country even approaches that. In the past two decades, the money that states spend on prisons has risen at six times the rate of spending on higher education.

Comparing the rate of increase of spending on prisons versus universities is rather pointless.

Anyway, how did we get here?

How is it that our civilization, which rejects hanging and flogging and disembowelling, came to believe that caging vast numbers of people for decades is an acceptably humane sanction?

If you reject hanging and flogging and disembowelling, what choice do you have? You either let crime go unpunished — the 1960s “solution” — or you resort to less overtly cruel punishments.

Gopnik asserts that “prison plays at best a small role in stopping even violent crime,” and this leads him to suggest a bit of “radical common sense”: very few people, rich or poor, should be in prison for a nonviolent crime:

Neither the streets nor the society is made safer by having marijuana users or peddlers locked up, let alone with the horrific sentences now dispensed so easily. For that matter, no social good is served by having the embezzler or the Ponzi schemer locked in a cage for the rest of his life, rather than having him bankrupt and doing community service in the South Bronx for the next decade or two. Would we actually have more fraud and looting of shareholder value if the perpetrators knew that they would lose their bank accounts and their reputation, and have to do community service seven days a week for five years.

I wouldn’t equate all nonviolent crime with marijuana possession, which many Americans consider a non-crime, or white-collar fraud. And while I’m in favor of forcing white-collar criminals to pay restitution, I have no trouble imagining the media reaction to rich white criminals “paying their way out of prison.”

Lego Is for Girls

January 27th, 2012

The Lego store might as well have a “No Girls Allowed” sign, Peggy Orenstein quips, because, as Brad Wieners explains, their boy-focused turnaround has been so successful:

Revenue has increased 105 percent since 2006, according to the privately held company’s 2010 annual report, and Lego topped $1 billion in U.S. sales for the first time last year. It’s on track to do that again in 2011. “They’re killing it now,” says Gerrick Johnson, equities analyst at BMO Capital Markets, who has followed the company’s impact on listed toymakers such as Mattel (MAT) and Hasbro (HAS) for a decade. Lego, he says, “is the hottest toy company in the boy segment, and maybe the hottest in toys overall.”

Now, after four years of research, design, and exhaustive testing, Lego believes it has a breakthrough, and Lego is for girls, too:

On Dec. 26 in the U.K. and Jan. 1 in the U.S., Lego will roll out Lego Friends, aimed at girls 5 and up. (French Lego retailers are going rogue and plan to bring out Lego Friends on Dec. 15.) In Lego’s larger markets, like the U.S., Lego determined it was better to introduce the new line after the holidays, when Wal-Mart Stores (WMT), for example, would give the line dedicated shelf space it wouldn’t during the holiday sales rush. The company’s confidence is evident in the launch — a full line of 23 different products backed by a $40 million global marketing push. “This is the most significant strategic launch we’ve done in a decade,” says Lego Group Chief Executive Officer Jørgen Vig Knudstorp. “We want to reach the other 50 percent of the world’s children.”

If you found yourself desperately hunting for gifts for a little girl for Christmas, you may be thinking, “Lego, are you messing with me on purpose?”

Anyway, how did they appeal to girls?

To develop Lego Friends, Knudstorp relaunched the same extensive field research — more cultural anthropology than focus groups — that the company conducted in 2005 and 2006 to restore its brand. It recruited top product designers and sales strategists from within the company, had them join forces with outside consultants, and dispatched them in small teams to shadow girls and interview their families over a period of months in Germany, Korea, the U.K., and the U.S.

The research techniques and findings have been controversial at Lego from the moment it became clear that if the company were serious about appealing to girls, it would have to do something about its boxy minifigure, its 4-centimeter plastic man with swiveling legs, a yellow jug-head, and a painted-on face. “Let’s be honest: Girls hate him,” says Mads Nipper, the executive vice-president for products and markets, Lego’s equivalent of a chief marketing officer. In terms of Lego iconography, the minifigure is second only to the original studded brick. It’s as hallowed as a 1 5/8th-inch piece of plastic can ever be.
[...]
During ’05 and ’06, the Lego “anthros,” as the research teams have been called, discovered some underappreciated cultural gaps. The idea of creative play as conducive to learning, or even formal education, is an article of faith at Lego that goes back to its founder, who defended his decision to become a toymaker during the Great Depression by pointing out that all animals use play to develop their brains. In Japan, however, Lego found that study and play were more clearly delineated. Few Japanese parents bought Lego, as they do in Germany or the U.S., because they were “toys with vitamins in them,” as Lego senior director Søren Holm only half-jokingly puts it.

American boys, meanwhile, turned out to be the least free of any group Lego tracked. British and German boys are far more likely to play unsupervised in yards and wooded areas and even have greater latitude in decorating their bedroom walls. Among slightly older American boys, 9 to 12, building with Lego represented a rare chance to be left alone. (On one subject, boys of all ages and nationalities agreed: A castle without a dragon is worse than no castle at all.)

Lego won’t say how much it spent on its anthropology, but research went on for months and shattered many of the assumptions that had led the company astray. You could say a worn-out sneaker saved Lego. “We asked an 11-year-old German boy, ‘what is your favorite possession?’ And he pointed to his shoes. But it wasn’t the brand of shoe that made them special,” says Holm, who heads up the Lego Concept Lab, its internal skunkworks. “When we asked him why these were so important to him, he showed us how they were worn on the side and bottom, and explained that his friends could tell from how they were worn down that he had mastered a certain style of riding, even a specific trick.”

The skate maneuvers had taken hours and hours to perfect, defying the consensus that modern kids don’t have the attention span to stick with painstaking challenges, especially during playtime. To compete with the plug-and-play quality of computer games, Lego had been dumbing down its building sets, aiming for faster “builds” and instant gratification. From the German skateboarder onward, Lego saw it had drawn the wrong lessons from computer games. Instead of focusing on their immediacy, the company now noticed how kids responded to the scoring, ranking, and levels of play — opportunities to demonstrate mastery. So while it didn’t take a genius or months of research to realize it might be a good idea to bring back the police station or fire engine that are at the heart of Lego’s most popular product line (Lego City), the “anthros” informed how the hook-and-ladder or motorcycle cop should be designed, packaged, and rolled out.

Encouraged by what it had learned about boys, Lego sent its team back out to scrutinize girls, starting in 2007. The company was surprised to learn that in their eyes, Lego suffered from an aesthetic deficit. “The greatest concern for girls really was beauty,” says Hanne Groth, Lego’s market research manager. Beauty, on the face of it, is an unsurprising virtue for a girl-friendly toy, but based on the ways girls played, Groth says, it came, as “mastery” had for boys, to stand for fairly specific needs: harmony (a pleasing, everything-in-its-right-place sense of order); friendlier colors; and a high level of detail.

“It was an education,” recalls Fenella Blaize Holden, an under-30 British designer, on the process of getting Lego Friends made. “No one could understand, why do we need more than one handbag? So I’d have to say, well, is one sword enough for the knights, or is it better to have a dagger, too? And then they’d come around.”

Lego confirmed that girls favor role-play, but they also love to build — just not the same way as boys. Whereas boys tend to be “linear” — building rapidly, even against the clock, to finish a kit so it looks just like what’s on the box — girls prefer “stops along the way,” and to begin storytelling and rearranging. Lego has bagged the pieces in Lego Friends boxes so that girls can begin playing various scenarios without finishing the whole model. Lego Friends also introduces six new Lego colors — including Easter-egg-like shades of azure and lavender. (Bright pink was already in the Lego palette.)

Then there are the lady figures. Twenty-nine mini-doll figures will be introduced in 2012, all 5 millimeters taller and curvier than the standard dwarf minifig. There are five main characters. Like American Girl Dolls, which are sold with their own book-length biographies, these five come with names and backstories. Their adventures have a backdrop: Heartlake City, which has a salon, a horse academy, a veterinary clinic, and a café. “We had nine nationalities on the team to make certain the underlying experience would work in many cultures,” says Nanna Ulrich Gudum, senior creative director.

The key difference between girls and the ladyfig and boys and the minifig was that many more girls projected themselves onto the ladyfig — she became an avatar. Boys tend to play with minifigs in the third person. “The girls needed a figure they could identify with, that looks like them,” says Rosario Costa, a Lego design director. The Lego team knew they were on to something when girls told them, “I want to shrink down and be there.”

The Lego Friends team is aware of the paradox at the heart of its work: To break down old stereotypes about how girls play, it risks reinforcing others. “If it takes color-coding or ponies and hairdressers to get girls playing with Lego, I’ll put up with it, at least for now, because it’s just so good for little girls’ brains,” says Lise Eliot. A neuroscientist at the Rosalind Franklin University of Medicine and Science in Chicago, Eliot is the author of Pink Brain Blue Brain, a 2009 survey of hundreds of scientific papers on gender differences in children. “Especially on television, the advertising explicitly shows who should be playing with a toy, and kids pick up on those cues,” Eliot says. “There is no reason to think Lego is more intrinsically appealing to boys.”

Maybe not, but even Knudstorp acknowledges that Lego’s girl problem will be hard to conquer.

How Thick Is Your Bubble?

January 26th, 2012

How thick is your bubble? Quite thick, I suspect, as Charles Murray’s Coming Apart quiz should demonstrate:

5. Have you ever walked on a factory floor?

6. Have you ever held a job that caused something to hurt at the end of the day?

7. Have you ever had a close friend who was an evangelical Christian?

I actually have walked on a factory floor, although I haven’t truly worked on one, and I have held a job that caused physical pain by the end of the day, but only as a teenager, and I do have strongly Christian friends, at least since I started shooting regularly.

Readers of this blog almost certainly score points for having friends with whom they disagree politically.

But, really, laugh at the SWPLs all we like, we’re in the upper-middle-class bubble.

(Hat tip à mon père.)

SE Android

January 26th, 2012

The US Army’s “Nett Warrior” program — supposedly named after Medal of Honor winner Robert Nett — is dropping it’s iconic wearable computer for a new NWEUD — that’s Nett Warrior End-User Device — based on commercial smart phones and tablets, so NSA has produced a “hardened” version of the Android OS, called SE Android, based on its Security-Enhanced version of Linux.

Armchair Pilots

January 26th, 2012

A few armchair pilots have gone far beyond installing Microsoft Flight Simulator on their home PC:

Mr. Krohn’s cockpit is part of a homemade flight simulator that never leaves his home. Yet it has dials, switches and pedals almost exactly like those on a genuine jet plane. The 52-year-old banker has spent more than 15 years building his machine, at a cost of more than $20,000.
[...]
“Mine’s made out of beer cans and truck parts,” says Australian Matt Sheil, who built a 747 jumbo jet cockpit in the garage of his truck-equipment company in Sydney. His simulator runs off 14 computers using 45 programs, some of them custom written. It can bank and pitch, like a real plane. Yet the steering column is an exhaust pipe. “You’d be surprised how many parts a Kenworth truck and a Boeing 747 have in common.”

Pediatric Autoimmune Neuropsychiatric Disorder Associated with Streptococcus

January 26th, 2012

Some children get sick, get well, and go on with their lives. Others get sick, get well, and then come down with pediatric autoimmune neuropsychiatric disorder associated with streptococcus, or PANDAS:

PANDAS is thought to be caused by antibodies generated as a result of an infection, usually strep. Normally, an infection causes the body to generate antibodies that fight the infection and promote healing. But in PANDAS, the antibody response is thought to go awry, attacking brain cells and resulting in OCD symptoms.

What kind of OCD symptoms?

Brody Kennedy was a typical sixth-grader who loved to hang out with friends in Castaic and play video games. A strep-throat infection in October caused him to miss a couple of days of school, but he was eager to rejoin his classmates, recalls his mother, Tracy.

Then, a week after Brody became ill, he awoke one morning to find his world was no longer safe. Paranoid about germs and obsessed with cleanliness, he refused to touch things and showered several times a day. His fear prevented him from attending school, and he insisted on wearing nothing but a sheet or demanding that his mother microwave his clothes or heat them in the dryer before dressing.
[...]
“He washed his hands over and over and was using hand-sanitizer nonstop,” said Tracy Kennedy, who has home-schooled her 11-year-old son since early November. “He had never been like this before. Ever. He just woke up with it.”

Heavy Boots

January 25th, 2012

William Newman just called our attention to the importance of heavy boots:

About 6-7 years ago, I was in a philosophy class at the University of Wisconsin, Madison (good science and engineering school) and the teaching assistant was explaining Descartes.

He was trying to show how things don’t always happen the way we think they will and explained that, while a pen always falls when you drop it on Earth, it would just float away if you let go of it on the Moon. My jaw dropped a little. I blurted “What?!” Looking around the room, I saw that only my friend Mark and one other student looked confused by the TA’s statement. The other 17 people just looked at me like “What’s your problem?” “But a pen would fall if you dropped it on the Moon, just more slowly.” I protested.

“No it wouldn’t.” the TA explained calmly, “because you’re too far away from the Earth’s gravity.” Think. Think. Aha! “You saw the APOLLO astronauts walking around on the Moon, didn’t you?”

I countered, “why didn’t they float away?”

“Because they were wearing heavy boots.” he responded, as if this made perfect sense (remember, this is a Philosophy TA who’s had plenty of logic classes). By then I realized that we were each living in totally different worlds, and did not speak each others language, so I gave up.

As we left the room, my friend Mark was raging. “My God! How can all those people be so stupid?” I tried to be understanding. “Mark, they knew this stuff at one time, but it’s not part of their basic view of the world, so they’ve forgotten it. Most people could probably make the same mistake.”

To prove my point, we went back to our dorm room and began randomly selecting names from the campus phone book. We called about 30 people and asked each this question: 1

1. If you’re standing on the Moon holding a pen, and you let go, will it
a) float away,
b) float where it is,
or c) fall to the ground?

About 47 percent got this question correct. Of the ones who got it wrong, we asked the obvious follow-up question:

2. You’ve seen films of the APOLLO astronauts walking around on the Moon, why didn’t they fall off?

About 20 percent of the people changed their answer to the first question when they heard this one! But the most amazing part was that about half of them confidently answered, “Because they were wearing heavy boots.”

More on the Burning Question of Heavy Boots

I decided to settle this question once and for all. Therefore, I put two multiple choice questions on my Physics 111 test, after the study of elementary mechanics and gravity.

13. If you are standing on the Moon, and holding a rock, and you let it go, it will:
(a) float away
(b) float where it is
(c) move sideways
(d) fall to the ground
(e) none of the above

25. When the Apollo astronauts wre on the Moon, they did not fall off because:
(a) the Earth’s gravity extends to the Moon
(b) the Moon has gravity
(c) they wore heavy boots
(d) they had safety ropes
(e) they had spiked shoes

The response showed some interesting patterns! The first question was generally of average difficulty, compared with the rest of the test: 57% got it right. The second question was easier: 73% got it right. So, we need more research to explain the people who got #25 right but did not get #13 right!

The second interesting point is that these questions proved to be excellent discriminators: that is, success on these two questions proved to be an extremely good predictor of overall success on the test. On the first question, 92% of those in the upper quarter of the test score got it right; only 20% of those in the bottom quarter did. They generally chose answers (a) or (b). On the second question, 97% in the upper quarter got it right and 33% in the lower quarter did. The big popular choice of this group was (c)…33% chose heavy boots, followed closely by safety ropes at 27%.

A telling comment on the issue of fairness in teaching elementary physics: Two students asked if I was going to continue asking them about things they had never studied in the class.

Hyper-Ambush Predators

January 25th, 2012

The saber-toothed “tiger” (Smilodon) had long, saber-like teeth — as did a couple other saber-toothed species — and those saber-like teeth seem to come with massive arms:

Back in 2010, Meachen-Samuels placed Smilodon fossils in an X-ray machine, and showed that it has extra-thick, reinforced bone in its upper arms, with large attachment points for its large muscles. It was a particularly butch cat.

The study confirmed the idea that Smilodon used its huge teeth in a very different way to its modern relatives. Living cats use their jaws to close the throat or nose of their prey, choking them to death. Their conical canines are well-suited to the task, able to withstand forces in all directions. Sabre-teeth, while they look formidable, were actually quite fragile. They were long and flattened, rather than short and conical. If the cat’s prey struggled, its teeth would have shattered. If the teeth hit bone during a bite, they would have shattered.

So Smilodon used the sabres like an assassin’s dagger rather than a swordsman’s blade, dispatching victims with quick stabs. Its big arms helped it to restrain its prey for the killing blow. Meachen-Samuels wondered if other sabre-toothed predators shared the same adaptations.

She compared the skeletons of 15 species of living cats with fossils from 8 species of sabre-toothed ones, 5 nimravids and 1 barbourofelid. Across the groups, Meachen-Samuels found that the species with the most exaggerated canines also had the most robust front legs and the widest paws. Based on the dimensions of these limbs, you could predict whether one of these animals had sabre teeth with almost perfect accuracy.

The Word “Sustainable” Is Unsustainable

January 24th, 2012

The word “sustainable” is unsustainable:

Physicists Lose The Lecture

January 24th, 2012

Leave it to physicists to test whether lectures teach anything or not:

When Eric Mazur began teaching physics at Harvard, he started out teaching the same way he had been taught. [...] But then in 1990, he came across articles written by David Hestenes, a physicist at Arizona State. Hestenes got the idea for the series when a colleague came to him with a problem. The students in his introductory physics courses were not doing well: Semester after semester, the class average never got above about 40 percent.

“I noted that the reason for that was that his examination questions were mostly qualitative, requiring understanding of the concepts rather than just calculational, using formulas, which is what most of the instructors did,” Hestenes says.

Hestenes had a suspicion students were just memorizing the formulas and never really getting the concepts. So he and a colleague developed a test to look at students’ conceptual understanding of physics. It’s a test Maryland’s Redish has given his students many times.

Here’s a question from the test: “Two balls are the same size but one weighs twice as much as the other. The balls are dropped from the top of a two-story building at the same instant of time. The time it takes the ball to reach the ground will be…”

The possible answers include about half as long for the heavier ball, about half as long for the lighter ball, or the same time for both. This is a fundamental concept but even some people who’ve taken physics get this question wrong.

[...]

While most physics students can recite Newton’s second law of motion, Harvard’s Mazur says, the conceptual test developed by Hestenes showed that after an entire semester they understood only about 14 percent more about the fundamental concepts of physics. When Mazur read the results, he shook his head in disbelief. The test covered such basic material.

“I gave it to my students only to discover that they didn’t do much better,” he says.

The test has now been given to tens of thousands of students around the world and the results are virtually the same everywhere. The traditional lecture-based physics course produces little or no change in most students’ fundamental understanding of how the physical world works.

“The classes only seem to be really working for about 10 percent of the students,” Arizona State’s Hestenes says. “And I maintain, I think all the evidence indicates, that these 10 percent are the students that would learn it even without the instructor. They essentially learn it on their own.”

[...]

Mazur’s physics class is now different. Rather than lecturing, he makes his students do most of the talking.

At a recent class, the students — nearly 100 of them — are in small groups discussing a question. Three possible answers to the question are projected on a screen. Before the students start talking with one another, they use a mobile device to vote for their answer. Only 29 percent got it right. After talking for a few minutes, Mazur tells them to answer the question again.

This time, 62 percent of the students get the question right. Next, Mazur leads a discussion about the reasoning behind the answer. The process then begins again with a new question. This is a method Mazur calls “peer Instruction.” He now teaches all of his classes this way.

“What we found over now close to 20 years of using this approach is that the learning gains at the end of the semester nearly triple,” he says.

One value of this approach is that it can be done with hundreds of students. You don’t need small classes to get students active and engaged. Mazur says the key is to get them to do the assigned reading — what he calls the “information-gathering” part of education — before they come to class.

Enhanced E-Books

January 23rd, 2012

Customers haven’t been asking for enhanced e-books, but a few have become break-out hits:

A book about skulls by Simon Winchester features a gallery of more than 300 human and animal skulls that can be rotated 360 degrees, enlarged and viewed in three dimensions with 3-D glasses. “The Elements,” which has interactive images of each element, became a runaway best seller, selling 250,000 copies at $13.99, bringing in more than $2.5 million in revenue. A widely praised app for T.S. Eliot’s “The Wasteland” includes a facsimile of the manuscript with edits by Ezra Pound, readings by Eliot recorded in 1933 and 1947 and a video performance of the poem by actress Fiona Shaw.

The highly produced apps — the digital equivalent of coffee-table books — are expensive to make, but so far they’ve been profitable, says Touch Press’s creative director Theodore Gray. Touch Press spent $120,000 on “The Wasteland” and recovered its investment in 4½ weeks. The app, priced at $13.99, hit No. 1 on Apple’s list of best-selling book apps, prompting hope among publishers that literature can hold its own in the app world.

Developing Talent in Young People

January 23rd, 2012

In a 1984 study, educational psychologist Benjamin Bloom found that one-to-one tutoring was dramatically better than conventional classroom teaching. Students randomly chosen to receive one-to-one instruction performed at the 98th percentile (of the conventionally instructed control group). Because one-to-one instruction doesn’t come cheap, this finding became known as Bloom’s 2 Sigma Problem.

His imperfect solution to the problem was mastery learning, where students perform corrective work until they master the material before moving on.

Now, where I would have concluded that conventional classroom teaching is largely a waste of time, Bloom and other educational psychologists concluded that we can close the achievement gap. Sure, I suppose, if you don’t let the sharper students move ahead.

Anyway, this led me to pick up a copy of Bloom’s Developing Talent in Young People, which looks at 120 individuals who, before the age of 35, had demonstrated the highest level of accomplishment in piano, tennis, swimming, sculpture, math, or research neurology.

None of them got there through conventional classroom training. Across most of the fields studied, the young experts-to-be had parents with some interest, but not necessarily any exceptional skill, in the field. The piano players’ parents, for instance, generally had classical music playing on the record player at home, and some played piano as a hobby, but they weren’t themselves concert pianists. The tennis players had families who spent the weekend at the country club, playing tennis. The mathematicians and neurologists had families who discussed important ideas around the dinner table.

The athletes and musicians generally got put into lessons fairly early, and their parents made sure they practiced. Although basically all of the experts described themselves as fast learners who picked up their field faster than the other kids, Bloom places zero weight on this and more or less dismisses the notion. He (rightly) points out that none of these future experts showed up as a prodigy, able to perform like an adult expert overnight. They all put in long hours of practice over the course of years, moving from a friendly local teacher or coach, to a more serious instructor, to a world-class one, as they progressed.

The mathematicians and neurologists, by the way, considered their early schooling a waste of time, at least as far as math and science were concerned. The mathematicians in particular disliked most of their math classes, with the exception of those “classes” where the teacher left them alone with a good math book to work through independently. Outside of school, they tended to like science and engineering projects, and many had their own home laboratories. They didn’t really get any coaching in their field until college and grad school.

The sculptors, by the way, scoffed at art classes and did their own art projects as they grew up — but few had any access to working artists, for guidance, or real materials, for sculpting, until art school.

Again, conventional classroom teaching is largely a waste of time — but mentoring talented and motivated students is immensely valuable.

The New American Divide

January 22nd, 2012

Charles Murray summarizes his new book, Coming Apart: The State of White America, for the Wall Street Journal and describes the new American divide between upper-middle-class Belmont and working-class Fishtown:

If you were an executive living in Belmont in 1960, income inequality would have separated you from the construction worker in Fishtown, but remarkably little cultural inequality. You lived a more expensive life, but not a much different life. Your kitchen was bigger, but you didn’t use it to prepare yogurt and muesli for breakfast. Your television screen was bigger, but you and the construction worker watched a lot of the same shows (you didn’t have much choice). Your house might have had a den that the construction worker’s lacked, but it had no StairMaster or lap pool, nor any gadget to monitor your percentage of body fat. You both drank Bud, Miller, Schlitz or Pabst, and the phrase “boutique beer” never crossed your lips. You probably both smoked. If you didn’t, you did not glare contemptuously at people who did.

When you went on vacation, you both probably took the family to the seashore or on a fishing trip, and neither involved hotels with five stars. If you had ever vacationed outside the U.S. (and you probably hadn’t), it was a one-time trip to Europe, where you saw eight cities in 14 days—not one of the two or three trips abroad you now take every year for business, conferences or eco-vacations in the cloud forests of Costa Rica.

You both lived in neighborhoods where the majority of people had only high-school diplomas—and that might well have included you. The people around you who did have college degrees had almost invariably gotten them at state universities or small religious colleges mostly peopled by students who were the first generation of their families to attend college. Except in academia, investment banking, a few foundations, the CIA and the State Department, you were unlikely to run into a graduate of Harvard, Princeton or Yale.

Even the income inequality that separated you from the construction worker was likely to be new to your adulthood. The odds are good that your parents had been in the working class or middle class, that their income had not been much different from the construction worker’s, that they had lived in communities much like his, and that the texture of the construction worker’s life was recognizable to you from your own childhood.

Taken separately, the differences in lifestyle that now separate Belmont from Fishtown are not sinister, but those quirks of the upper-middle class that I mentioned—the yogurt and muesli and the rest—are part of a mosaic of distinctive practices that have developed in Belmont. These have to do with the food Belmonters eat, their drinking habits, the ages at which they marry and have children, the books they read (and their number), the television shows and movies they watch (and the hours spent on them), the humor they enjoy, the way they take care of their bodies, the way they decorate their homes, their leisure activities, their work environments and their child-raising practices. Together, they have engendered cultural separation.
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The best thing that the new upper class can do to provide that reinforcement is to drop its condescending “nonjudgmentalism.” Married, educated people who work hard and conscientiously raise their kids shouldn’t hesitate to voice their disapproval of those who defy these norms. When it comes to marriage and the work ethic, the new upper class must start preaching what it practices.