Salt Doesn’t Cause High Blood Pressure

Friday, September 12th, 2014

A new study published in the American Journal of Hypertension analyzed data from 8,670 French adults and found that salt consumption wasn’t associated with systolic blood pressure in either men or women after controlling for factors like age:

It should be noted, however, that even though the study found no statistically significant association between blood pressure and sodium in the diet, those patients who were hypertensive consumed significantly more salt than those without hypertension — suggesting, as other research has, that salt affects people differently.

As for the factors that did seem to influence blood pressure, alcohol consumption, age, and most of all BMI were strongly linked to a rise. Eating more fruits and vegetables was significantly linked to a drop.

Flying Cavalry Column

Friday, September 12th, 2014

Wei Qing and his nephew Huo Qubing achieved the first victories against the steppe nomads by using a flying cavalry column. T. Greer cites Sima Qian’s description:

The Han strategists plotted together, saying, “Zhao Xin, the marquis of Xi, who is acting as adviser to the Shanyu is convinced that, since the Xiongnu are living North of the desert, the Han forces can never reach them.” They therefore agreed to fatten the horses on grain and send out a force of 100,000 cavalry, along with 140,000 horses to carry baggage and other equipment (this in addition to the horses provided for transporting provisions). They ordered the force to split up into two groups commanded by the general in chief Wei Qing and the general of swift cavalry Huo Qubing. The former was to ride out of Dingxiang and the latter out of Dai; it was agreed that the entire force would cross the desert and attack the Xiongnu.

….Wei Qing’s army, having traveled 1,000 li [aprox 310 miles; 644 km] beyond the border, emerged from the desert just at the point where the Shanyu was waiting. Spying the Shanyu’s forces, Wei Qing likewise pitched camp and waited. He ordered the armored wagons to be ranged in a circle about the camp and at the same time sent out 5,000 cavalry to attack the Xiongnu. The Xiongnu dispatched some 10,000 of their own cavalry to meet the attack. Just as the sun was setting, a great wind arose, whirling dust into the faces of them until the two armies could no longer see each other. The Chinese then dispatched more men to swoop out to the left and the right and surround the Shanyu. When the Shanyu perceived how numerous the Han soldiers were and perceived that the men and horses were still in strong fighting condition, he realized that he could win no advantage in battle…. And accompanied by several hundred of his finest horsemen, broke through the Han encirclement and fled to the northwest…. All in all Wei Qing killed or captured 10,00 of the enemy, He then proceeded to Zhao Xin’s fort at Mt. Tianyan, where he seized the Xiongnu’s supplies of grain and feasted his men. He and his army remained there only a day, however, and then setting fire to the remaining grain, began the journey home.

Meanwhile Huo Qubing with his 50,000 cavalry rode more than 1,000 li north from Dai and Youbeiping and attacked the forces of the Wise King of the Left. He was accompanied by a force of carriages and baggage similar to what traveled with Wei Qing’s army, but had no subordinate generals beneath him…. When Huo Qubing’s army returned to the capital the emperor issued an edict which read: “The general of swift cavalry Huo Qubing has led forth the trips and personally commanded a force of barbarians captured in previous campaigns, carrying with him only light provisions and crossing the great dessert. Fording the Huozhangqu, he executed the enemy leader Bijuqi and then turned to strike at the enemy general of the left, cutting down his pennants and seizing his war drums. He crossed over Mt. Lihou, forded the Gonglu, captured the Tuntou king, the Han king, and one other, as well as eighty generals, ministers, household administrators, and chief commandments of the enemy… He seized a great multitude of the enemy, taking 70,443 captives while only three tenths of his own men were lost in the campaign.

A New US Army Air Corp

Friday, September 12th, 2014

The President has said that he will destroy the Caliphate, but there hasn’t been much shock or awe yet, Jerry Pournelle notes:

Of course one can only send what one has. What is really needed is Delta Force ground units with several squadrons of Warthogs (A-10 Thunderbolt). Actually, P-47 Thunderbolts would do, but we don’t have any of those. Ground units with adequate sir support under and air supremacy umbrella is generally successful in any kind of war, whether the enemy is the Wehrmacht of the North Vietnamese Army of 1972 when it invaded the South. Note that in that campaign, the North Vietnamese lost over 100,000 in killed, disabled, or captured; the US lost under 500 troops total in battles involving more enemy armor than many World War II engagements.

What is really needed is to form a new United States Army Air Corps with a 3-star general in command; its mission would be to design, develop, procure, train, and generally plan operations of air weapons suitable for support of the field army. That structure would provide a career path for those who wish to specialize in air/ground war. Of course USAF will never allow this, although they don’t understand or want the ground support operations mission, even though that is what is decisive in this kind of war.

USAF has one of the world’s best civil engineering capabilities: they build and operate bases. Perhaps the Army could borrow USAF construction units to build bases in Peshmurga controlled Iraq; the Army would have to provide security. Under present USAF/US Army turf treaties, the Army has to use helicopters, which are far more vulnerable to ground based opposition. This gives hot USAF pilots more missions, since air supremacy (which includes elimination of ground based anti-air weapons) is an Air Force specialty and they are very good at it. The problem is that when it comes to any budget crises, it’s the Thunderbolts that go first, leaving the Army stuck with vulnerable helicopters.

An American ground/air expeditionary force with unified command structure sounds like the Marines, but they don’t have optimum ground army support aircraft either.

Four squadrons of Warthogs and a regiment of Green Berets would eliminate the Caliphate in short order, recapturing or destroying the expensive weapons we gave the ineffective Iraqi forces which threw them down in their retreat from ISIS. Of course it would be hard on the areas that must be reconquered, but so is occupation by the Caliphate.

Regarding the President’s speech, in the wake of our operations since Benghazi, I am not sure that the Caliphate has been impressed. Had dawn come up over Iraq to reveal massive air strikes including carpet bombing by B-52’s, along with a maximum effort from Navy and Marine aircraft, the result might be different.

We have Delta Force, the CIA teams, and the Green Beret forces; we have ground support aircraft, and we have an Air Force that, once it is told unmistakably that the mission is to support our Legionnaires who will guide the Peshmerga, can do this job. Of course that is expensive. Perhaps we can take some of the profits from the oil fields we will liberate. I am sure the Kurds will be glad to share that revenue with us. And the sight of a US-Kurdish cooperative venture resulting in victory should provide a salutary lesson to the new Iraqi government – as well as give Iran something to think about.

Of course nothing of this sort will happen under President Obama. One does wonder what Vice President Biden would do if put in charge. At least he has said that we will pursue the Caliphate to the gates of Hell.

The Forward Slope

Friday, September 12th, 2014

Gen. DePuy recommends against having troops dig in on the forward slope:

After the Bulge had collapsed and we started back to the east, we crossed a series of rivers. When we got up between the Prum and the Kyll Rivers, we encountered a very high open ridge. One of my company commanders put his “C” Company out in the snow on a bare forward slope. They dug in and everyplace they dug they made dark doughnuts in the snow. On the other side of the river there was another ridge. On top of that ridge were some German
assault guns, and they waited until the company commander had all of his troopers scattered around in their foxholes on the forward slope, and then, they just started firing with their two assault guns. It was murder. Finally, after they killed and wounded maybe 20 men in that company, the rest of them just got up and bolted out of there and went over to the reverse slope, which is where they belonged in the first place. So, being on a forward slope when the enemy has direct fire weapons, high velocity direct fire weapons, is suicide. And, every time I went to Germany, I tried to convince Blanchard and the 1st Armored Division, the 3rd Armored Division, and the 3rd Division, at Hohenfels, of that. But, time after time, I’d find them all lined up in exposed, uncamouflaged, half-finished positions right within the sights of a Russian T-62 tank. It’s suicide unless they have frontal cover and are camouflaged. A trench is better. You see, a trench is a superior solution to that. And, a lot of people, the North Koreans, the South Koreans, the North Vietnamese, the Russians, and some Germans, use trenches. The Arabs, the Egyptians, the Syrians and the Israelis, sometimes use trenches. Why? Because you don’t know where they are when they’re in the trenches. When you are trying to shoot at people in a trench line, you have to ask yourself, “What part of a trench line do I shoot at?” You can waste a lot of ammunition trying to suppress a trench. But, trying to suppress clearly visible American foxholes or bunkers with high velocity weapons is a Cakewalk. It’s suicide to go into battle like that. But, our Army as a whole, doesn’t know that.

Ask Peter Thiel Anything

Thursday, September 11th, 2014

Peter Thiel is doing a Reddit AMA. Some highlights:

  • Most people deal with aging by some strange combination of acceptance and denial. I think the psychological blocks to thinking about aging run very deep, and we need to think about it in order to really fight it.
  • The zero-sum world [The Social Network] portrayed has nothing in common with the Silicon Valley I know, but I suspect it’s a pretty accurate portrayal of the dysfunctional relationships that dominate Hollywood.
  • Start with focusing on a small market and dominate that market first.
  • What did you think when you first met Elon Musk? Very smart, very charismatic, and incredibly driven — a very rare combination, since most people who have one of these traits learn to coast on the other two.
    It was kind of scary to be competing against his startup in Palo Alto in Dec 1999-Mar 2000.
  • Is Palantir a front for the CIA? No, the CIA is a front for Palantir.
  • If technology involves doing more with less, than US health care (like US education) is the core of “anti-technology” in this country: For the last four decades, we have been spending more and more for the same (or even for less).
  • At 22, I didn’t think it was important to meet people.
  • In your view, has the Thiel Fellowship been a success? Yes, on both a micro and a macro scale.
    Micro: the 83 fellows have collectively raised $63 million, and a number of their companies are tracking towards solid Series B venture rounds. Almost all of them did and learned far more than they would have in college.
    Macro: we started an important debate about the education bubble. Student debt is over $1 trillion in this country, and much of that money has gone to pay for lies that people tell about how great the education they received was.
  • I like the genre of past books written about the future, e.g.: Francis Bacon, The New Atlantis; JJ Servan-Schreiber, The American Challenge; Norman Angell, The Great Illusion; Neal Stephenson, The Diamond Age.
  • In the Soviet Union, chess was considered a sport — and I think that’s the one thing the communists got right.
  • I don’t agree with the libertarian description of the NSA as “big brother.” I think Snowden revealed something that looks more like the Keystone Kops and very little like James Bond.
  • Most people believe that capitalism and competition are synonyms, and I think they are opposites. A capitalist accumulates capital, and in a world of perfect competition all the capital gets competed away: The restaurant industry in SF is very competitive and very non-capitalistic (e.g., very hard way to make money), whereas Google is very capitalistic and has had no serious competition since 2002.
  • PayPal built a payment system but failed in its goal in creating a “new world currency” (our slogan from back in 2000). Bitcoin seems to have created a new currency (at least on the level of speculation), but the payment system is badly lacking.
    I will become more bullish on Bitcoin when I see the payment volume of Bitcoin really increase.
  • What is your view on Neoreaction? Sounds like a self-contradiction — if you’re reactionary, why do you need the “neo?”
  • I think there’s been a Gresham’s Law in science funding in this country, as the political people who are nimble in the art of writing government grants have gradually displaced the eccentric and idiosyncratic people who typically make the best scientists. The eccentric university professor is a species that is going extinct fast.
  • If our great expectations about the future are not realized, then we need to save way more than we are doing today. China (with 40% savings) is perhaps more “rational” than the US (with about 0% savings), at least in a world of general stagnation.
  • Sociopathic investor behavior that worked shockingly well in the 1980s and 90s will work much less well in today’s more transparent and founder-centric world.
    As an investor, I think one must always maintain a certain amount of humility. There is only so much we can do to help the companies in which we invest. And because of this, the act of making the investment (rather than the ability to fix things later) remains by far the most important thing we do.
  • A sense of mission is critical, but I think the word “social” is problematically ambiguous: it can mean either (1) good for society, or (2) seen as good by society.
    In the second meaning, it leads to me-too copycat companies. I think the field of social entrepreneurship is replete with these, and that this is one of the reasons these businesses have not been that successful to date.
  • Biggest mistake ever was not to do the Series B round at Facebook.
    General lesson: Whenever a tech startup has a strong up round led by a top tier investor (Accel counts), it is generally still undervalued. The steeper the up round, the greater the undervaluation.
  • Yes, I think [Henry] George is a really interesting thinker. The idea that we should tax land heavily (and perhaps not tax anything else at all) is very interesting, since many of the bad monopolies in our society involve the unholy coalition of urban slumlords and pseudo-environmentalists.
  • I think Andreessen is half-right: Snowden is both a hero and a traitor.
    It is really unfortunate that there were no internal checks in our system, and so it took something like Snowden breaking all the rules for us to have a serious discussion about the NSA.
  • Even when one understands that exponential growth and exponential forces are incredibly important, it is still hard to internalize this. PayPal was growing at 7%/day at the time of the launch (Oct 99-Apr 2000, from 24 users to 1 million), and we did not fully fathom the rocket we were riding.
  • I do not find myself fully on the side of any of our political leaders — because none of them are fully on my side.

Euharamiyida

Thursday, September 11th, 2014

New specimens place three species of Euharamiyida firmly within the class of Mammals — a long, long time ago:

Paleontologists have described three new small squirrel-like species that place a poorly understood Mesozoic group of animals firmly in the mammal family tree. The study, led by scientists at the American Museum of Natural History and the Chinese Academy of Sciences, supports the idea that mammals — an extremely diverse group that includes egg-laying monotremes such as the platypus, marsupials such as the opossum, and placentals like humans and whales — originated at least 208 million years ago in the late Triassic, much earlier than some previous research suggests.

The study is published today in the journal Nature.

“For decades, scientists have been debating whether the extinct group, called Haramiyida, belongs within or outside of Mammalia,” said co-author Jin Meng, a curator in the Museum’s Division of Paleontology. “Previously, everything we knew about these animals was based on fragmented jaws and isolated teeth. But the new specimens we discovered are extremely well preserved. And based on these fossils, we now have a good idea of what these animals really looked like, which confirms that they are, indeed, mammals.”

The three new species — Shenshou lui, Xianshou linglong, and Xianshou songae — are described from six nearly complete 160-million-year-old fossils found in China. The animals, which researchers have placed in a new group, or clade, called Euharamiyida, likely looked similar to small squirrels. They weighed between 1 and 10 ounces and had tails and feet that indicate that they were tree dwellers.

Arboreal Mammals in a Jurassic Forest

“They were good climbers and probably spent more time than squirrels in trees,” Meng said. “Their hands and feet were adapted for holding branches, but not good for running on the ground.”

The members of Euharamiyida likely ate insects, nuts, and fruit with their “strange” teeth, which have many cusps, or raised points, on the crowns. Mammals are thought to evolve from a common ancestor that had three cusps; human molars can have up to five. But the newly discovered species had two parallel rows of cusps on each molar, with up to seven cusps on each side. How this complex tooth pattern evolved in relation to those of other mammals has puzzled scientist for many decades.

Despite unusual tooth patterning, the overall morphology, or physical characteristics, seen in the new haramiyidan fossils is mammalian. For example, the specimens show evidence of a typical mammalian middle ear, the area just inside the eardrum that turns vibrations in the air into ripples in the ear’s fluids. The middle ears of mammals are unique in that they have three bones, as evidenced in the new fossils.

However, the placement of the new species within Mammalia poses another issue: Based on the age of the Euharamiyida species and their kin, the divergence of mammals from reptiles had to have happened much earlier than some research has estimated. Instead of originating in the middle Jurassic (between 176 and 161 million years ago), mammals likely first appeared in the late Triassic (between 235 and 201 million years ago). This finding corresponds with some studies that used DNA data.

“What we’re showing here is very convincing that these animals are mammals, and that we need to turn back the clock for mammal divergence,” Meng said. “But even more importantly, these new fossils present a new suite of characters that might help us tell many more stories about ancient mammals.”

Society Is Fixed, Biology Is Mutable

Thursday, September 11th, 2014

While sitting through a lecture on ADHD, Scott Alexander realized that he rejected a popular premise:

There’s this stereotype that the Left believes that human characteristics are socially determined, and therefore mutable. And social problems are easy to fix, through things like education and social services and public awareness campaigns and “calling people out”, and so we have a responsiblity to fix them, thus radically improving society and making life better for everyone.

But the Right (by now I guess the far right) believes human characteristics are biologically determined, and biology is fixed. Therefore we shouldn’t bother trying to improve things, and any attempt is just utopianism or “immanentizing the eschaton” or a shady justification for tyranny and busybodyness.

And I think I reject this whole premise.

See, my terrible lecture on ADHD suggested several reasons for the increasing prevalence of the disease. Of these I remember two: the spiritual desert of modern adolescence, and insufficient iron in the diet. And I remember thinking “Man, I hope it’s the iron one, because that seems a lot easier to fix.”

Society is really hard to change. We figured drug use was “just” a social problem, and it’s obvious how to solve social problems, so we gave kids nice little lessons in school about how you should Just Say No. There were advertisements in sports and video games about how Winners Don’t Do Drugs. And just in case that didn’t work, the cherry on the social engineering sundae was putting all the drug users in jail, where they would have a lot of time to think about what they’d done and be so moved by the prospect of further punishment that they would come clean.

And that is why, even to this day, nobody uses drugs.

On the other hand, biology is gratifyingly easy to change. Sometimes it’s just giving people more iron supplements.

Neighborhood Deprivation

Thursday, September 11th, 2014

Do bad neighborhoods cause crime? Nope:

Background A number of studies suggest associations between neighbourhood characteristics and criminality during adolescence and young adulthood. However, the causality of such neighbourhood effects remains uncertain.

Methods We followed all children born in Sweden from 1975–1989 who lived in its three largest cities by the age of 15 years and for whom complete information was available about individual and contextual factors (N = 303 465). All biological siblings were identified in the sample (N = 179 099). Generalized linear mixed-effects models were used to assess the effect of neighbourhood deprivation on violent criminality and substance misuse between the ages of 15 and 20 years, while taking into account the cross-classified data structure (i.e. siblings in the same families attending different schools and living in different neighbourhoods at age 15).

Results In the crude model, an increase of 1 SD in neighbourhood deprivation was associated with a 57% increase in the odds of being convicted of a violent crime (95% CI 52%–63%). The effect was greatly attenuated when adjustment was made for a number of observed confounders (OR 1.09, 95% CI 1.06–1.11). When we additionally adjusted for unobserved familial confounders, the effect
was no longer present (OR 0.96, 95% CI 0.84–1.10). Similar results were observed for substance misuse. The results were not due to poor variability either between neighbourhoods or within families.

Conclusions We found that the adverse effect of neighbourhood deprivation on adolescent violent criminality and substance misuse in Sweden was not consistent with a causal inference. Instead, our findings highlight the need to control for familial confounding in multilevel studies of criminality and substance misuse.

Nomad Mobility

Thursday, September 11th, 2014

The steppe nomads may have been poor and primitive, with one-twentieth the population of China, but they had the advantage of mobility:

When we moderns think of the advantages mobile horse archers have over infantry armies our minds jump to the tactical — Parthian archers wheeling about at Carrhae, Mongol faux-retreats, and their like. However, for most of Inner Asian history nomadic mobility had its greatest impact at the strategic level of warfare. The nomads had no population centers to defend. They had no walls to guard and did not have to worry about holding key strategic points. When an enemy force threatened their homes they could simply pack these homes up and move them somewhere else until the danger was over. If an enemy army could not be beat in a pitched battle then the nomads would not fight a pitched battle. They would retreat, disappearing into the desert or grasslands until the enemy was forced to return home. These retreats and migrations took a toll on the nomads’ herds, but it did not bring them to economic ruin.

The same was never true for the Chinese. The economic costs of any expedition against a nomadic foe were enormous. To call a soldier on a campaign was to take him away from a farm; the state not only had to pay him for his service but had to do so with a smaller tax base. The state also had to feed him while on the campaign. The bigger the force the more supplies needed to feed it. The steppe is hostile to invading armies; there are few farms to plunder or cities to loot. Everything the army will eat on the campaign must be brought with it. This means long supply trains. The further the Chinese chased the nomads into the steppe the longer and less protected these supply trains would become. Eventually the invading force would reach a point where their supply lines could be stretched no farther. If at this point they decide to turn around and return home then they have wasted their entire treasury and gained nothing from it. On the other hand, if they try to hold their position the nomads will circle round, cut the supply lines, and leave the invading force to starve in the desert. The Chinese are offered a grim choice between retreat and death.

Worst of all, once the invaders have returned home and disbanded (or if they chose death and were all slaughtered in the desert) there is nothing to stop the nomads from returning to the border and continuing on with the standard raids, surprise attacks, and pillaging nomadic warriors are famous for.

We never had to fire a shot

Thursday, September 11th, 2014

Gen. DePuy recalls an attack he led between Bastogne and Wiltz:

Our attack began about four o’clock in the morning. It was mid-winter in that part of Europe, so the days were very short.

Anyway, I attacked in the dark and got through. I had a theory which, I think, worked every time. The Germans always defended on the tops of the hills and in the valleys. If you went to the top of the hill, you would find a German position; if you went to the bottom, you would find a German position. But, there was never a defensive position on the hillsides. Every time we made an attack in that area of high forested hills, the whole battalion would go single file. We’d go around the side of the hill and right through the German positions and get behind them. We never had to fire a shot. The Germans would be down on the bottom, or up on the top, so they couldn’t see us. There was snow and it was quiet. We’d go right through. We did that three times in that particular fight. So, we didn’t have to fight to penetrate. It was something we learned in Normandy — don’t fight them head-on; find out where they are and go someplace else. Of course, it was even easier at night.

Video Conference Seminars

Wednesday, September 10th, 2014

Is the Minerva Project the future of college?

Minerva is an accredited university with administrative offices and a dorm in San Francisco, and it plans to open locations in at least six other major world cities. But the key to Minerva, what sets it apart most jarringly from traditional universities, is a proprietary online platform developed to apply pedagogical practices that have been studied and vetted by one of the world’s foremost psychologists, a former Harvard dean named Stephen M. Kosslyn, who joined Minerva in 2012.

Nelson and Kosslyn had invited me to sit in on a test run of the platform, and at first it reminded me of the opening credits of The Brady Bunch: a grid of images of the professor and eight “students” (the others were all Minerva employees) appeared on the screen before me, and we introduced ourselves.

[...]

[French physicist Eric] Bonabeau began by polling us on our understanding of the reading, a Nature article about the sudden depletion of North Atlantic cod in the early 1990s. He asked us which of four possible interpretations of the article was the most accurate. In an ordinary undergraduate seminar, this might have been an occasion for timid silence, until the class’s biggest loudmouth or most caffeinated student ventured a guess. But the Minerva class extended no refuge for the timid, nor privilege for the garrulous. Within seconds, every student had to provide an answer, and Bonabeau displayed our choices so that we could be called upon to defend them.

Bonabeau led the class like a benevolent dictator, subjecting us to pop quizzes, cold calls, and pedagogical tactics that during an in-the-flesh seminar would have taken precious minutes of class time to arrange. He split us into groups to defend opposite propositions—that the cod had disappeared because of overfishing, or that other factors were to blame. No one needed to shuffle seats; Bonabeau just pushed a button, and the students in the other group vanished from my screen, leaving my three fellow debaters and me to plan, using a shared bulletin board on which we could record our ideas. Bonabeau bounced between the two groups to offer advice as we worked.

(Hat tip to Al Fin.)

A Tale of Two Charter Schools

Wednesday, September 10th, 2014

Michael Strong tells a tale of two charter schools, both starting their fourth year of operation:

School A is in a precarious position. Started by an uncertified, incompetent administrator, it has received numerous audit findings and has received low performance ratings from the state department of education. State-mandated academic standards were not being taught. Many of the original faculty were unqualified, though that is finally being remedied. Building code violations were a problem throughout its first several years. The school was chronically late turning its data in to the state. Discipline problems were chronic at the school; on one occasion an unlicensed volunteer teacher tried to choke a student in the classroom. At one point the school had to be supervised by the local district because it lacked a qualified administrator; the second one had quit after only one semester. Although it is now led by an experienced, professional, properly licensed administrator, given the school’s history of chronic problems it is not surprising that the school district questions the ongoing independence of the school and has filed a complaint against the school with the state department of education. The school may yet be shut down as the district believes it ought to be.

School B is arguably one of the greatest charter school success stories in the nation. Started by an experienced administrator whose innovative pedagogy had been recognized by leading national experts in learnable intelligence and brain-based learning as well as a McArthur Genius award-winning educator, the school has been dramatically successful at creating a culture of learning in one of the most academically backward regions of the country. In its second year of operation, the school had taken students who had never taken an AP test at their previous school (AP was almost non-existent in this part of the country) and become one of the top 200 public high schools in the country based on Newsweek’s Challenge Index. In its third year of operation, it had moved into the top 100 in the nation. The state AP organization organized a week-long summer AP training so that the administrator and faculty could share their expertise with other teachers across the state. SAT scores increased at a rate double the national average. The federal department of education awarded the school a large grant to replicate its physical education program in charter schools across the state. Several foundations rewarded the school with hundreds of thousands of dollars of grants for its obvious successes. Most of the students love the school and love learning at the school. Teachers moved from across the country to teach at the school. Parents moved from across the country to send their children to this school. Students across a broad range of learning abilities, including highly gifted and autistic students, flourish at the school. Twenty percent of the students commute almost an hour each direction through a dangerous mountain canyon to get to this school. Residents of nearby towns have expressed an interest in having this school replicate itself so that their children can benefit from this school’s unique program.

The challenge facing those who would like to see charter schools lead innovation and thereby improve education for all students? School A and School B are the same school, the first seen through the eyes of the state and the second through the eyes of supporters of the school.

He recommends reading Seeing Like a State to better understand the problem.

Taming the Barbarians

Wednesday, September 10th, 2014

Confucian norms and philosophy never caught hold in Inner Asia:

This explains why attempts to “corrupt” the Xiongnu and subordinate the Shanyu to the emperor failed so dismally. The nomads were eager to seize Chinese goods and luxury items, but were never economically dependent on them. Unlike in Japan, Korea, Vietnam, and the “barbarian” statelets of South China, the economic structure of the Xiongnu empire was radically different than agrarian China’s. There simply was not enough common ground between the two peoples for Chinese lifestyles to be grafted onto the Xiongnu people.

This is a recurring theme of Inner Asian history: nomadic elites could adopt the trappings of Chinese culture, but without moving off of the steppe they could never absorb its substance. The social worlds of the two peoples were simply too different. The ritualized and hierarchical relationships of the traditional Chinese family had no analogue in the egalitarian family life of the steppe. The first recorded Chanyu seized power by murdering his own father. The notion that “filial piety” — or any of the other civilized virtues China hoped to “tame” the barbarians with — could be instilled in the Xiongnu by giving them wives and clothes and toys was a political fantasy.

Holding up a Regiment

Wednesday, September 10th, 2014

At the time, Gen. DePuy was impressed by how a handful of Germans could hold up a regiment by sighting* their weapons properly:

If they had two assault guns and 25 men, they put one assault gun on one side of the road, perhaps on the reverse slope firing through a saddle, and put another one behind a stone house, firing across the road. They protected them with some infantry and had a couple of guys with Panzerfausts up on the road itself, or just off the road in pits or behind houses. Now, here comes the point of an American unit roaring down the road, a couple of jeeps or maybe a tank, and bang, you lost a tank or two. The company commander then decides to maneuver a platoon around and boom, he loses another tank. So, the commander decides to wait for the battalion commander to come up. And, the battalion commander, if he is very imaginative, might say, “All right, while I’m trying to solve this thing, “C” Company go wide around to the right and come up behind this town.” Those were the tactics which kept the thing moving. But, sometimes a unit would stay there and fight all day against 25 men and two assault guns. And, that happened all too often.

Commanders would too often attack the enemy head-on, whereas if they could just screen that position, just block it with something and find another way around, then they could keep going. Eventually, that is what almost always happened. They found their way around. Some units would find their way around in a matter of minutes and hours; other units couldn’t find their way around except after having lost a whole day fiddling with one of these little things. Now, what one learned from fighting a lot of these things, is an understanding of tactics. The big lesson is not to take him head-on. Anything is better than that. And, you get an understanding of sighting weapons. The Germans were just superior at that. And, to this day, they are very good at it.

*I’m pretty sure placing your artillery is siting it, while aiming it is sighting it, with a gh.

How to Give Your Child an Expensive Private Education — For Less Than $3,000 per Year

Tuesday, September 9th, 2014

Michael Strong explains how to give your child an expensive private education for less than $3,000 per year — by working toward complete autodidacticism with a coach, rather than covering curriculum with a teacher:

Consider the advantage your child will have had if she has spent 3–5 hours each day reading for the past ten years, 2–3 hours engaged in mathematical activity for the past ten years, and 2–3 hours writing each day for the past ten years.  Most students sit in class listening for six hours per so each day, of which much of that time actually consists of teachers managing the class rather than teaching.  The only real time that children practice skills are when they do homework at night, at which point they may be tired and longing for play or free time.  A child that reads, writes, and does math from 9–5 p.m. each day, with time off for lunch, will spend far more hours actually learning than does a child who goes to school — plus that child will be free to spend family time together in the evening instead of chained to their desk at night doing homework.

In the early years, this means working on three things:

  1. Reading, reading, reading, and more reading.
  2. The development of sophisticated writing skills.
  3. As much advancement in mathematics as is possible.

“Whenever I encounter a student who is a habitual reader,” Strong says, “I regard the educational problem as 90% solved”:

Although this sounds odd to modern ears, in many cases some of the most famous thinkers in history self-educated simply by reading, “and then I read all the books in my father’s library.”

Just as reading skills are developed by means of many hours of reading, writing skills are developed by means of many hours of writing — and talking:

But expository writing, the ability to explain his or her understanding of the world and how they obtained such an understanding, is the key to all of collegiate writing and much adult professional writing. Although one can “teach” techniques for such writing, such teaching proceeds far more naturally if one has spent many thousands of hours talking with your child and asking them why they liked the story, why they respected certain characters, how and why they might have handled certain situations differently, etc.

The ideal is to create a home atmosphere in which thinking and talking about life and how one understands life has become second nature, in which dinner time conversations routinely move ever more deeply into explorations of what happened during the day and why, in which explicitly understanding the world by means of conscious thought is the daily norm.

For children raised in such a rich dialogic atmosphere, for children who have “rehearsed” their thoughts in conversations for thousands of hours, expository writing becomes a natural extension of their habitual conversations. As they write more and longer pieces, you as parent, or a hired writing coach if you prefer, can assign various structures, coach on the detailed use of mechanics, and develop in your child a rich, distinctive writing voice well before adolescence. Indeed, a bright child raised in a conversationally rich home environment can easily develop a mastery of Strunk and White by means of coached writing of long essays while most school children are still doing formulaic book reports at school.

The chief flaw of most school math programs is that the pace is far too slow:

Develop in your child the habit of sitting down to work on solving mathematics problems for at least an hour per day, preferably a couple of hours per day.

Many children spontaneously love to read, and do not need to be forced to read. With a sufficiently rich conversational atmosphere, one can develop in young people an appetite for writing. Such a spontaneous love for mathematical problem solving seems to be rarer. This is the single area in which the development of a routine, daily disciplined work period is probably the most important.

Math curricula are fairly linear and standardized. You (or your child’s math coach) should closely monitor progress to ensure that the child is practicing enough to learn each concept without engaging in repetition to the point of boredom. Ideally this would be highly individualized; there are some children who grasp some mathematical concepts almost instantaneously and do not need many repetitions. Other students may need many repetitions of some concepts but grasp other concepts quickly. Individualized mathematics coaching, combined with an ideal of two hours of highly disciplined practice each day, is one way in which your child can develop a tremendous advantage over students in school. Because even elite private schools typically adhere to the glacial grade level pace of American mathematics education, a personally coached mathematics student with good work habits can easily arrive at middle school age one, two, three or more years ahead of his or her age-level peers.

At some point your child should undertake a substantial enterprise:

In traditional cultures young people typically underwent a right of passage at the age of thirteen or so, after which they were welcomed into the adult community with adult responsibilities. In American culture prior to the imposition of compulsory schooling, individuals such as Benjamin Franklin, Andrew Carnegie, and Thomas Edison began their careers at thirteen and built a foundation for lifetime achievement upon real world achievements in adolescence. This type of real world achievement should be a goal for you and your child.

Often parents eager to get their children into elite colleges are eager for their children to participate in many school “activities.” And yet colleges are overwhelmed with students who list participation in numerous activities. They are more interested in real achievement than in long lists of “participations.” It is one thing to be student body president; it is another to create a successful business, publish an academic article, or develop a career as a professional musician prior to entry into college.

Existing K-12 education, Strong notes, is largely training in immaturity:

We neither expect nor allow our children to aspire to real achievement. It is all a game for children, and they know it. One of the goals of having read real books, magazines, journals, and newspapers rather than textbooks is to have introduced your child fully into the adult world as it really is. They should know about business, and government, and relationships, and entertainment not as “subjects” to be taught but as living realities in the adult communities in which they were raised. The thousands of hours of conversations should have focused them not on preparation for tests, but rather on understanding the real world of real life.

So, how much does this education cost?

Twenty-five dollars an hour buys an excellent tutor (or academic coach) in most parts of the country. Many graduate students or retired people would be glad to teach a well-behaved, motivated young person for $25 per hour. Two days of mathematics coaching would thus be $50 per week; another two days of humanities (reading, writing, and conversation) coaching would be another $50 per week. At one hundred dollars per week one can buy thirty weeks per year of personalized academic coaching for $3,000.