Wii Sports Resort

Wednesday, July 16th, 2008


Nintendo’s Wii Sports sequelWii Sports Resortgoes tropical with three new games: Sword Play, Power Cruising, and Disc Dog.

I have been waiting for a Wii sword-fighting game for a long time — and it looks like there’s a reason:

The newly announced Wii MotionPlus — a new accessory that plugs into the base of the Wiimote to provide better tracking of arm movement — will come packed with the game.

Ah, sweet, sweet, faux-light saber action…

Testing of electric truck for Los Angeles port sparks enthusiasm

Wednesday, July 16th, 2008

Testing of electric truck for Los Angeles port sparks enthusiasm:

Although electric truck tests are still underway, the port has already ordered 20 more of the vehicles at a cost of $208,000 each.
[...]
The electric truck, which takes about three hours to charge, has a range of about 30 miles while pulling a 60,000-pound cargo container, and about 60 miles empty. Although that distance may not sound useful, much of freight hauling within the port complex is from terminals to nearby train yards.

It costs about 20 cents a mile to operate, or about four to nine times less than a diesel truck, depending on fluctuating fuel costs and operating conditions.

You can watch a short puff piece on the truck too.

Despite the fact that Los Angeles Harbor Commission President S. David Freeman says, “With diesel fuel selling for nearly $5 a gallon, this is the cheapest truck on the road,” that’s not clear at all.

How does the $208,000 price tag compare to the price of an equivalent diesel truck? How long does the battery last, and how much does it cost to replace? Why don’t those numbers ever make their way into an article about cost savings?

Anyway, I do believe that an electric truck makes perfect sense for moving cargo containers short distances across port facilities, and I know I’d rather work around electric trucks than diesels.

(Hat tip to FuturePundit.)

The Water Shortage Myth

Wednesday, July 16th, 2008

David Zetland debunks The Water Shortage Myth:

As it stands, Los Angeles households pay $2.80 for the first 885 gallons they use per day. That’s enough water to fill 18 bathtubs. The next 18 tubs cost $3.40, which is only 20% more. Most L.A. households don’t even see this price increase, since the average household of three uses just 350 gallons — about seven bathtubs — each day. For that water, the household pays only $35 a month. If they use twice the amount, the bill merely doubles.

I propose a system where every person gets the first 75 gallons, or 1.5 bathtubs, per day for free but pays $5.60 for each 75 gallons after that. Under my system, the monthly bill for the average household of three would come to $95.

My system is designed to reduce demand rather than cover costs. Revenue paid by guzzlers would cover the costs of those who use only a small amount of water. Any leftover profits could be refunded to consumers or used to enhance the quality or quantity of the water supply.



Incidentally, his system wouldn’t reduce demand — it would reduce the quantity demanded. His system actually reduces supply — the amount provided at a given price — but that doesn’t sound good to non-economists.

Ulcer bacteria may protect from asthma

Wednesday, July 16th, 2008

Ulcer bacteria may protect from asthma:

“Among teens and children ages 3 to 19 years, carriers of H. pylori were 25 percent less likely to have asthma.”

Children aged 3 to 13 were 59 percent less likely to have asthma if they also had H. pylori, they reported in the journal Clinical Infectious Diseases.

The researchers used data on more than 7,000 U.S. children from the National Health and Nutrition Survey conducted from 1999 to 2000 by the National Center for Health Statistics.

The study showed that 5.4 percent of children born in the 1990s tested positive for H. pylori.

“If you look at the people born in 1919, 60 percent are positive. That’s a huge change,” Blaser said in a telephone interview. “I have referred to this as global warming of the stomach.”

During the same time, asthma rates have soared. Among the children aged 3 to 19 in the study, 23 percent had asthma, Blaser said.
[...]
“Maybe the same antibiotics that made H. pylori go away make something else go away.” Or perhaps the bacteria somehow protects against asthma directly, perhaps by changing the body’s immune response.

Expectant moms who eat nuts boost child asthma risk

Wednesday, July 16th, 2008

Expectant moms who eat nuts boost child asthma risk:

Pregnant women who eat nuts or nut products like peanut butter daily raise the risk their children will develop asthma by 50 percent, Dutch researchers said on Tuesday.

The study also showed that moderate amounts did not seem to have an effect, meaning it is too soon to say whether pregnant women should give up nuts because they contain many important nutrients and healthy fats a developing fetus needs, they said.

Kindle 2.0 Coming Around October 2008

Wednesday, July 16th, 2008

Kindle 2.0 Coming Around October 2008:

An insider let slip that two new Amazon Kindle models will hit stores this holiday season, with the first coming as early as October.

The first is an updated version with the same sized screen, a smaller form factor, and an improved interface. The source told us that Amazon has “skipped three or four generations,” comparing the old Kindle to the 1st gen iPod and the new version to something like the sexy iPod Mini.

The second new model, which is shaped like an 8 1/2 x 11-inch piece of paper, is considerably bigger than the current model and should be available next year.

Both models should come in multiple colors and may be aimed at younger readers.

Wii Music

Wednesday, July 16th, 2008

I’ve been wondering how long it would be until someone came out with a free-form version of Guitar Hero or Rock Band, where you could play your own music. Now it looks like Nintendo’s leading the way, with its upcoming Wii Music:

Nintendo this morning announced a new addition to the Wii family: Wii Music. Instead of your musical creativity being confined by the limitation of the number of plastic instruments that can fit in your living room, Wii Music uses the Wii Remote, Nunchuck and Balance Board to let the user play more than 60 different instruments.

But don’t get confused: Wii Music isn’t trying to compete with Rock Band and Guitar Hero. Instead, the game’s more like an open jam session where players improvise as they go—there are no notes to follow, no one to boo you off stage, no Star Power to reward you for a 100-note streak. It’s a non-judgmental way to rock out through your TV.

We heard a drum and sax solo, and then a few Nintendo executives demonstrated full-band play onstage by gracing us with a calypso rendition of the Mario theme song. But we’re still unsure how much skill is actually required to “play” each instrument. In fact, Nintendo’s press release says “the music always sounds great,” so we’re pretty sure anyone can pick up the controllers and put on an impressive show.

The drums were the most interesting instrument demonstrated. The remote and numchuck are used like drum sticks, so you need to move your arms around like you’re air drumming to get your sound. The Wii Balance Board is used like the drum pedals on any drum kit. It manages to seem very realistic without requiring a physical set the way Rock Band does. And the game gives you lessons, so theoretically you should learn how to play an actual drum set in a few weeks.

Wii Music also lets you record multi-track videos, so you can be your own one-man band. Or you can be like indy band The Postal Service and send tracks back and forth with friends through WiiConnect24. Bottom line: Even though it might not be as demanding as the other music-making games out there, Wii Music looks like a lot of fun. It will be in stories in time for the holidays—let’s just hope that Nintendo ships enough copies to satisfy all the Wii Fanatics out there.

The Doping Dilemma

Tuesday, July 15th, 2008

Michael Shermer examines The Doping Dilemma, specifically in cycling, and describes the immense advantage from using recombinant erythropoietin (r-EPO) to stimulate the production of red blood cells:

One of the subtle benefits of r-EPO in a brutal three-week race like the Tour de France is not just boosting HCT levels but keeping them high. Jonathan Vaughters, a former teammate of Armstrong’s, crunched the numbers for me this way: “The big advantage of blood doping is the ability to keep a 44 percent HCT over three weeks.” A “clean” racer who started with a 44 percent HCT, Vaughters noted, would expect to end up at 40 percent after three weeks of racing because of natural blood dilution and the breakdown of red blood cells. “Just stabilizing [your HCT level] at 44 percent is a 10 percent advantage.”

Scientific studies on the effects of performance-enhancing drugs are few in number and are usually conducted on nonathletes or recreational ones, but they are consistent with Vaughters’s assessment. (For obvious reasons, elite athletes who dope are disinclined to disclose their data.) The consensus among the sports physiologists I interviewed is that r-EPO improves performance by at least 5 to 10 percent. When it is mixed in with a brew of other drugs, another 5 to 10 percent boost can be squeezed out of the human engine. In events decided by differences of less than 1 percent, this advantage is colossal.

Science Has Become the New Frontier for Title Nine

Tuesday, July 15th, 2008

This is terrifying. Science Has Become the New Frontier for Title Nine:

Until recently, the impact of Title IX, the law forbidding sexual discrimination in education, has been limited mostly to sports. But now, under pressure from Congress, some federal agencies have quietly picked a new target: science.

The National Science Foundation, NASA and the Department of Energy have set up programs to look for sexual discrimination at universities receiving federal grants. Investigators have been taking inventories of lab space and interviewing faculty members and students in physics and engineering departments at schools like Columbia, the University of Wisconsin, M.I.T. and the University of Maryland.

So far, these Title IX compliance reviews haven’t had much visible impact on campuses beyond inspiring a few complaints from faculty members. (The journal Science quoted Amber Miller, a physicist at Columbia, as calling her interview “a complete waste of time.”) But some critics fear that the process could lead to a quota system that could seriously hurt scientific research and do more harm than good for women.

A surprising dose of sanity from the Times:

Despite supposed obstacles like “unconscious bias” and a shortage of role models and mentors, women now constitute about half of medical students, 60 percent of biology majors and 70 percent of psychology Ph.D.’s. They earn the majority of doctorates in both the life sciences and the social sciences. They remain a minority in the physical sciences and engineering. Even though their annual share of doctorates in physics has tripled in recent decades, it’s less than 20 percent. Only 10 percent of physics faculty members are women, a ratio that helped prompt an investigation in 2005 by the American Institute of Physics into the possibility of bias.

But the institute found that women with physics degrees go on to doctorates, teaching jobs and tenure at the same rate that men do. The gender gap is a result of earlier decisions. While girls make up nearly half of high school physics students, they’re less likely than boys to take Advanced Placement courses or go on to a college degree in physics.

These numbers don’t surprise two psychologists at Vanderbilt University, David Lubinski and Camilla Persson Benbow, who have been tracking more than 5,000 mathematically gifted students for 35 years.

They found that starting at age 12, the girls tended to be better rounded than the boys: they had relatively strong verbal skills in addition to math, and they showed more interest in “organic” subjects involving people and other living things. Despite their mathematical prowess, they were less likely than boys to go into physics or engineering.

But whether they grew up to be biologists or sociologists or lawyers, when they were surveyed in their 30s, these women were as content with their careers as their male counterparts. They also made as much money per hour of work. Dr. Lubinski and Dr. Benbow concluded that adolescents’ interests and balance of abilities — not their sex — were the best predictors of whether they would choose an “inorganic” career like physics.

A similar conclusion comes from a new study of the large gender gap in the computer industry by Joshua Rosenbloom and Ronald Ash of the University of Kansas. By administering vocational psychological tests, the researchers found that information technology workers especially enjoyed manipulating objects and machines, whereas workers in other occupations preferred dealing with people.

Once the researchers controlled for that personality variable, the gender gap shrank to statistical insignificance: women who preferred tinkering with inanimate objects were about as likely to go into computer careers as were men with similar personalities. There just happened to be fewer women than men with those preferences.

Economics of a POW Camp

Tuesday, July 15th, 2008

R. A. Radford, writing in Economica in 1945, explains the economics of a POW camp, including the cigarette currency, which arose spontaneously:

Although cigarettes as currency exhibited certain peculiarities, they performed all the functions of a metallic currency as a unit of account, as a measure of value and as a store of value, and shared most of its characteristics. They were homogeneous, reasonably durable, and of convenient size for the smallest or, in packets, for the largest transactions. Incidentally, they could be clipped or sweated by rolling them between the fingers so that tobacco fell out.

Cigarettes were also subject to the working of Gresham’s Law. Certain brands were more popular than others as smokes, but for currency purposes a cigarette was a cigarette. Consequently buyers used the poorer qualities and the Shop rarely saw the more popular brands: cigarettes such as Churchman’s No. 1 were rarely used for trading. At one time cigarettes hand-rolled from pipe tobacco began to circulate. Pipe tobacco was issued in lieu of cigarettes by the Red Cross at a rate of 25 cigarettes to the ounce and this rate was standard in exchanges, but an ounce would produce 30 home-made cigarettes. Naturally, people with machine-made cigarettes broke them down and rerolled the tobacco, and the real cigarette virtually disappeared from the market. Hand-rolled cigarettes were not homogeneous and prices could no longer be quoted in them with safety: each cigarette was examined before it was accepted and thin ones were rejected, or extra demanded as a make-weight. For a time we suffered all the inconveniences of a debased currency.

Machine-made cigarettes were always universally acceptable, both for what they would buy and for themselves. It was this intrinsic value which gave rise to their principal disadvantage as currency, a disadvantage which exists, but to a far smaller extent in the case of metallic currency; – that is, a strong demand for non-monetary purposes. Consequently our economy was repeatedly subject to deflation and to periods of monetary stringency. While the Red Cross issue of 50 or 25 cigarettes per man per week came in regularly, and while there were fair stocks held, the cigarette currency suited its purpose admirably. But when the issue was interrupted, stocks soon ran out, prices fell, trading declined in volume and became increasingly a matter of barter. This deflationary tendency was periodically offset by the sudden injection of new currency. Private cigarette parcels arrived in a trickle throughout the year, but the big numbers came in quarterly when the Red Cross received its allocation of transport. Several hundred thousand cigarettes might arrive in the space of a fortnight. Prices soared, and then began to fall, slowly at first but with increasing rapidity as stocks ran out, until the next big delivery. Most of our economic troubles could be attributed to this fundamental instability.

Pro Boxer’s Punch Carries Heavy Weight

Tuesday, July 15th, 2008

Unsurprisingly a pro boxer's punch carries a heavy weight — just how heavy is pretty surprising though:

Researchers at the University of Manchester in England were curious about just how much force a top boxer can generate with a punch. So they enlisted local boxer Ricky Hatton, an undefeated 28 year old light welterweight and welterweight world champ. And they had him hit a 30 kilogram punching bag with sensors attached.

The results should make any spectators who figure they could last a while in the ring with a pro think again. Because Ricky Hatton, who’s nickname is The Hitman, generated a force of about 400 kilograms. An average person with no boxing training can generate only about one tenth that much force with a punch.

Slow motion video found that Hatton could typically generate punch speeds of 25 miles per hour, with one blow reaching 32 mph. The best punch speed that one of the researchers could achieve was about 15 miles per hour.

I guess there’s the question of whether a researcher is in fact average in punching power, or much, much weaker. Anyway, a factor of 10 is a big factor.

By the way, welterweight is between light and medium — just 152 lbs — so Hatton is not a big guy.

And, of course, 400 kilograms is not a measure of force — but we know what they mean.

Hunger Can Make You Happy

Tuesday, July 15th, 2008

Hunger can make you happy — or at least motivated:

When our bodies notice we need more calories, levels of a hormone called ghrelin increase. Ghrelin is known to spur hunger, but new research suggests this may be a side effect of its primary job as a stress-buster.

Researchers manipulated ghrelin levels in mice through a variety of methods, including prolonged calorie restriction, ghrelin injection and a genetic modification rendering the mice numb to ghrelin’s effect.

Mice who had limited ghrelin activity seemed depressed. If pushed into deep water they made no effort to swim. When introduced to a maze, they clung to the entryway. And when placed with other mice, they tended to keep to themselves. (These behaviors were reversed when the mice were given a low-dose antidepressant commonly prescribed to humans.)

In contrast, mice with high levels of ghrelin swam energetically in deep water, looking for escape. They eagerly explored new environments. And they were much more social.

The 100,000 most trustworthy and responsible adults in the country

Tuesday, July 15th, 2008

Mencius Moldbug has been promoting the idea that a government is just a corporation, if a poorly run one, and that we really should declare our current state bankrupt, put it into receivorship, and transfer control to the 100,000 most trustworthy and responsible adults in the country:

By what process will we select these individuals? Who shall recruit the recruiters? It is difficult and expensive to find just one individual with these executive qualifications. Moreover, in a sovereign context, the filtering process itself will serve as a political football — many progressives might decide, for example, that only progressives can be trusted. It is impossible to end a fight by starting a new fight.

This insane recruiting process cannot occur either under [the current government] or under [the new sovereign corporation government]. It cannot occur under [the current government], because it will be subject to [current government] politics and will carry those politics, which are uniformly poisonous, forward into [the sovereign corporation]. At this point the reset is not a reset. But it cannot occur under [the sovereign corporation], because the trustees are needed to select the Receiver. And there can be no intervening period of anarchy.

But there is a hack which can work around this obstacle. You might think it’s a cute hack, or you might think it’s an ugly hack. It probably depends on your taste. I think it’s pretty cute.

The hack is a precise heuristic test to select trustees. The result of the test is one bit for every citizen of [the country]: he or she either is or is not a trustee. The test is precise because its result is not a matter of debate — it can be verified trivially. And it is heuristic because it should produce a good result on average, with only occasional horrifying exceptions.

My favorite [precise heuristic test] defines the trustees as the set of all active, certified, nonstudent pilots who accept the responsibility of trusteeship, as of the termination date of [the current government]. The set does not expand — you cannot become a trustee by taking flying lessons, and any rejection or resignation of the responsibility is irreversible. In other words, to paraphrase Lenin: all power to the pilots. (There are about 500,000 of them.)

Let’s look at the advantages of this [precise heuristic test]. I am not myself a pilot — I am neither wealthy enough, nor responsible enough. But everyone I’ve ever met who was a pilot, whether private, military or commercial, has struck me as not only responsible, but also independent-minded, often even adventurous. This is a particularly rare combination. To be precise, it is an aristocratic combination, and the word aristocracy is after all just Greek for good government. Pilots are a fraternity of intelligent, practical, and careful people who are already trusted on a regular basis with the lives of others. What’s not to like?

Dark Knight Shift

Monday, July 14th, 2008

In Dark Knight Shift, JR Minkel of Scientific American interviews E. Paul Zehr on why Batman could exist — but not for long:

How would Batman get enough rest?
The difficulty for Batman is he’s going to be trying to sleep during the day. He’s going to be really tired, actually, unless he can shift himself over to just being up at night. If he were just a nocturnal guy, he would actually be a lot healthier and have a lot better sleep than if he were doing what he does now, which is getting some light here and there. That’s going to mess up his sleep patterns and duration of sleep.

Wouldn’t fighting Gotham’s thugs every night take its toll?
The biggest unreal part of the way Batman’s portrayed is the nature of his injuries. Most of the time, in the comics and in the movies, even when he wins, he usually winds up taking a pretty good beating. There’s a real failure to show the cumulative effect of that. The next day he’s shown out there doing the same thing again. He’d likely be quite tired and injured.

Is there any indication in the comics of how long Batman’s career lasts?
The comics are really vague on this, of course. In Frank Miller’s The Dark Knight Returns, he deliberately shows an aging Batman coming back after he’s retired, and he highlights him being tired and weaker. Somewhere around age 50 to 55, he should probably retire. His performance is going down. He’s always facing younger adversaries. That is well at the end of when he’s going to be able to defend himself and be able to not have to deal that lethal force. This was actually shown in an animated series called Batman Beyond.

Oh right. It’s the future; Batman is old and he trains a kid to replace him.
You’re familiar with that one? What we learn is that Batman, when he was older but before he retired, actually picked up a gun against a thug because he had to. His skills had let him down so that he wasn’t able to defend himself without harming another person. So that’s when he decided to retire.

How would all those beat-downs have affected his longevity?
Keeping in mind that being Batman means never losing: If you look at consecutive events where professional fighters have to defend their titles—Muhammad Ali, George Foreman, Ultimate Fighters—the longest period you’re going to find is about two to three years. That dovetails nicely with the average career for NFL running backs. It’s about three years. (That’s the statistic I got from the NFL Players Association Web site.) The point is, it’s not very long. It’s really hard to become Batman in the first place, and it’s hard to maintain it when you get there.

I believe Dr. Zehr has overlooked a key aspect of being the Batman — he doesn’t fight fair. Criminals are a cowardly and superstitious lot, and the Dark Knight plays on their fears, while choosing the time and place of his attack.

I can’t say I agree with Zehr’s training advice either:

What’s a realistic training regimen?
I didn’t give a training manual in my book, but he’d want to do specialized weight training to build up an ability to work at a really high rate for maybe 30 seconds to a minute (the maximum time period associated with his fights). One of the early comics shows him holding an enormous weight over his head. That’s not the right kind of adaptation toward punching and kicking. He’s got to make sure he’s doing all the skill training at the same time so that he’s actually using the (physical) adaptations he’s slowly gaining. In conventional martial arts, when people take weapons training, you’re doing a kind of power-strength training.

What effects would all that training have on Bruce Wayne’s body?
I looked up what DC Comics and some other books said (about Batman’s physique). I settled on the estimate that Bruce Wayne started off at about six-foot-two and 185 pounds. I gave him a body fat of 20 percent (slightly below average) and a body mass index of 26. Let’s say after 10 or 15 years, after he’s become the Batman, he’s weighing about 210 pounds and has a body fat of 10 percent. He’s probably gained 40 pounds of muscle. His bones will actually be more dense, kind of the opposite of osteoporosis.

Are we talking freakishly dense bones?
The percentage change is actually quite small—maybe 10 percent. In judo, where people do a lot of grappling and throwing, you’re going to have more density in the long bones of the trunk. In karate and other martial arts where they’re doing a lot of kicking, there’s going to be a lot higher density in the legs. Muay Thai (kickboxing) is a great example. They’re always doing these low shin kicks. They try to condition the body by kicking progressively harder objects and for longer.

Lifting an enormous weight overhead — i.e. doing a clean & jerk — is excellent training for building up the muscles, bones, tendons, and ligaments of the legs and core, which are used extensively in judo — and in jumping from rooftop to rooftop. But Zehr is a Chito-Ryu karate-do practitioner who, I suppose, rarely jumps from rooftop to rooftop.

What Batman needs is a cross-fit routine with an emphasis on judo/jiu-jitsu, kickboxing, and parkour.

Also, I’d hardly say that Bruce Wayne was 185 lbs. at 20 percent body-fat before training. First, he started training as a teen — his parents were killed while he was a child — and, second, even a mildly active young man can be, say, 8 percent body-fat without really trying.

Nobody Lives Past Thirty

Monday, July 14th, 2008

Al Fin shares an amusing cartoon. I hope I don’t ruin the joke by pointing out that the average age of paleolithic humans might have been quite low, but some early humans lived to be quite old.