Monday, March 05, 2007
Missed it by that much...
An independent scientific audit of the UK's climate change policies predicts that the government will fall well below its target of a 30% reduction in carbon dioxide emissions by 2020 - which means that the country will not reach its 2020 milestone until 2050.
Anyway, I plan to be living on the Moon by then in my transhumanist engineered robo-body. Either that, or in a retirement village close to the sea (which by then, will mean in Toowoomba.) This is assuming that CERN hasn't ended the universe beforehand.
I remain a "glass is half full" sort of guy.
Unimportant disasters
Humans speak more than 6,000 languages. Nearly all of them could be extinct in the next two centuries.
So what?
University of Alaska Fairbanks professor emeritus Michael Krauss addressed that question during his presentation at the American Association for the Advancement of Science annual meeting, which begins today in San Francisco.
"I claim that it is catastrophic for the future of mankind," Krauss said. "It should be as scary as losing 90 percent of the biological species."
I have no idea how to judge how scary that would be. Given nature's particular fondness for insects, I am guessing you could get close to 90% before even reaching the creatures we actually like. And if a significant number of the blood sucking, disease carrying ones went away, I may not be too worried at all. (Yes, I am half joking here. It's all very complicated, this inter species diversity stuff, so I am told. Still, I am not entirely sure what irreplaceable benefit to the ecosystem are, say, the malaria carrying mosquitoes.)But back to languages:
Humanity became human in a complex system of languages that interacted with each other.
"That is somehow interdependent such that we lose sections of it at the same peril that we lose sections of the biosphere," Krauss said. "Every time we lose (a language), we lose that much also of our adaptability and our diversity that gives us our strength and our ability to survive."
I have heard this sort of argument before, and never found it convincing. I would have thought that the evolution of language was something that just happened, and government intervention could only slow the inevitable. Furthermore, the idea used to be that a universal language would help promote world peace and understanding; but now that forecasts of ecological disaster are culturally popular, by analogy a loss of languages will also be a catastrophe.
How can any linguist really prove that losing a language is a detriment to society overall? What he is spruiking here does not even sound like real science to me.
If this line of argument is the best they can come up with, I will remain a firm non-believer.
Global warming and Europe
China problems
This seemed to be a crucial point:
George Friedman: The conservative count of non-performing loans is $600 billion in non-performing loans. A more realistic estimate that comes from companies like Ernst & Young are $900 billion in non-performing loans. There are some who say that non-performing loans are in the $1.2 to $1.3 trillion range. However you look at it, we're talking about somewhere between 30% and 60% of the Chinese GDP being bound up in bad loans. To benchmark it, when Japan reached about 15% non-performing loans of GDP it began its severe generation-long recession.
When East Asia, particularly South Korea, for example, reached about 20%, 22% it began to tumble.The news today that China is expanding its military spending was in line with what Friedman said here:
China is not that difficult a country to blockade, and the Chinese regard the Americans as highly unpredictable, not fully rational, and that makes them very nervous. So one of the things we've seen the Chinese do, we saw a Chinese submarine penetrate an American carrier battle group a few months ago which is a pretty aggressive and unusual move. We've seen them in space use lasers to try to blind American satellites, and we've seen them demonstrate an anti-satellite system.
So the Chinese are moving fairly aggressively in the high-tech side of things to develop counters to American power, and quite frankly they've got people in Washington quite concerned because they seem to be very good at it.
You really should read the whole interview.Sunday, March 04, 2007
A very trivial post
Outbreaks of cholera and eventual deterioration of the wooden Tamagawa conduits brought about the Shinjuku-based Yodobashi Purification Plant in 1892. Impressed with the plant's engineering, the Metropolitan Drinking Fountain and Cattle Trough Association of London presented Shinjuku with a ponderous commemorative fountain, which today sits just outside the east exit of Shinjuku Station.
I'm also not sure if these are official or unofficial names:
The claustrophobia-inducing underpass toward the west side of Shinjuku Station feeds into a web of yokocho (side alleys) with a postwar patina. The names of some alleys, shomben (urine) and gokiburi (cockroach) might be better lost in translation, but the Lilliputian yakitori and drinking joints are fully packed by 5 p.m. every night.
I think I have a photo of me in one of those.
Friday, March 02, 2007
Charles on the Moon
As he notes, a lot of the criticism of human space exploration comes from those on the left of politics, because of some crazy idea they have that human society on Earth is perfectable if only you spend enough money on it. As Charles says:
I find this objection incomprehensible. When will we stop having problems here on earth? In a fallen world of endless troubles, that does not stop us from allocating resources to endeavors we find beautiful, exciting and elevating -- opera, alpine skiing, feature films -- yet solve no social problems.
Well said, Charles, although he then hastens to add there is good science to be done on the Moon anyway.
Not only does he love space, we agree on priorities:
Sure, Mars would be better. It holds open the possibility of life and might even have water on its surface today. But the best should not be the enemy of the good. Mars is simply too far, too dangerous, too difficult, too expensive. We won't go there for a hundred years.
Given the disinclination of lefties to want to be in on colonizing anything (even barren rocks currently devoid of life), it would seem a fair bet that the politics of future space colonies might of the rather conservative, or perhaps libertarian, bent. (By the way, I have increasingly felt that the later novels of Robert Heinlein, with their libertarian societies and all kinds of marriage and sexual arrangements, have actually turned out to be more prophetic, and at much greater speed, than I ever expected when I read them in the 1980's. I still can't get over how quickly Western society has swung in its acceptance of gay marriage as a concept, for example.)
Anyway, I doubt there are going to be any socialists on the Moon, even if there will be a high degree of interdependence amongst the residents in small colonies.
Kevin Rudd - needs practice
People criticise John Howard often for taking a "best form of defence is offence" approach, but I still think it may be taken by the public as showing a greater resilience to pressure than the Rudd approach.
(Mind you, admitting to and apologising for mistakes is something that Peter Beatty in Queensland has elevated to an art form, and it did him no harm in the last election. The big difference, though, is that there is no credible alternative government in the present opposition in Queensland.)
Just half a glass of wine a day...
Doctors and death
In fact, doctors aren't bad at handling the details of dying. We know how to ease pain, promote comfort, and arrange the medical particulars. But we are disasters when it comes to death itself, just like the rest of the human species. (Morticians often have the same problem.) I admire Chen's and Stein's pep-club optimism, but they might have integrated Ernest Becker's seminal Denial of Death into their discussions. Becker's basic point is that all of human behavior can be traced to our inability to accept our own mortality. Cowards that we are, we not only refuse to consider our own inevitable death, but our patients', too: We duck the tough discussions, flinch and flutter and order another test, and finally leave it to a (usually much younger) colleague to sit down with the family. We don't slink away because we are bad people; we slink away because we are people.
I had never really thought before about how morticians cope with death in their own family.
By the way, I also had a conversation recently with someone with a lot of insider knowledge of the medical business world, who assured me that being a retail pharmacist with your own business in Australia is one of the most lucrative jobs around.
It doesn't seem particularly stressful, either. Is it too late for me to become one?
Thursday, March 01, 2007
The enforcers
Following the recent popularity of a YouTube video of a rabbit chasing off a snake, there's now a good one of chickens doing an extremely convincing impersonation of a couple of cops:
Why do these chickens care about 2 rabbits fighting?
The cat who loves Chavez
As one commenter notes:
"So-called 'dictator'":
He rules by decree. What more does one need to be labeled a dictator?
This comment further down by MalachiConstant is amusing (be sure to read it to the end):I must admit I have had a hard time making up my mind about Chavez. I like some of his policies very much, however he does seem a trifle ham-handed, autocratic, and a bit of a clown who is more concerned with scoring points on the world stage than sorting out the real problems of Venezuela (should he really be giving the people of London half-priced bus rides while the people of most Venezuelan towns use buses that would have been scrapped in the UK twenty years ago, all to buy friendship with a leftwing UK fringe of very limited influence?). However now that I know he is good buddies with George all doubts are put to rest - any friend of George's is certainly an authoritarian scum and to be opposed on all points. Thanks for sorting me out on that George.
Wednesday, February 28, 2007
Ride that laser
All this talk is inspired by recent success in powering up solid state lasers.
What with heat beam weapons, laser battle guns, and a return to the Moon, the 21st century is starting to look as if it might live up to a futuristic image after all. Just waiting for those flying cars and personal rocket belts, though.
Inherently safer nuclear (and free advice to the the Howard government)
As you may expect, pebble bed reactors get a mention, but so does another reactor (the Economic Simplified Boiling Water Reactor) which would, like Pebble Beds, could automatically shut down without any outside intervention:
The ESBWR replaces previous reactors' complex systems for residual heat removal with a design that uses no pumps or emergency generators--in fact, it possesses no moving parts at all, except for the neutron-absorbing control rods that are pulled partway out from its core so that nuclear fission can proceed. That fission reaction boils the water in the ESBWR's core, which becomes steam that gets carried away to large tubes in which it rises, releases its energy to turbines, and then condenses so that gravity causes it to flow back down to the core as water again. In short, the ESBWR runs wholly on natural circulatory forces. Rao says, "It could not be simpler. The control rods get pulled out, water comes in, and steam goes out, carrying heat that gets turned into electricity."
But even other, more complicated designs, are still much better than older plants:
This simplicity of design also features in other gen-III reactor designs like the Westinghouse AP1000, which has 60 percent fewer valves, 75 percent less piping, 80 percent less control cabling, 35 percent fewer pumps, and 50 percent less seismic building volume than currently operational reactors. This trend becomes more pronounced in gen-IV designs like the pebble bed reactor. In conjunction with "the modern computer-aided manufacturing technologies currently used most extensively in the ship-building industry," Peterson says, what's now possible is a modular approach to nuclear-plant construction, whereby large segments of the plants will be prefabricated in factories.
It seems to me that if the Howard government wants to defuse some of the Labor Party's "tell us where in Australia would you locate a reactor" scare campaign, it should be talking loudly about these new reactor designs which are safer, cheaper, and probably just becoming available when we would want our first reactor anyway.
It may be premature to do so, but it could be even better to commit to only allowing reactors with strong passive safety, such as a pebble bed or that ESBRW described above. I mean, if the thing can't melt down, even if something goes wrong while everyone is at the Christmas picnic, that has to be a strong selling point in the public's mind.
This aspect of the future of nuclear power generation is not getting the publicity it deserves.
My other advice to John Howard: it's not too late to get rid of that goose of a Defence Minister Brendan Nelson.
The Economist on reasons to be skeptical about carbon offsets
When you donate money to build a new windfarm, you don't take any of the old, polluting power offline; you increase the supply of power, reducing the price until others are encouraged to buy more carbon-emitting power. On the margin, it may make some difference, since demand for electricity is not perfectly elastic, but nowhere near the one-for-one equivalence that carbon offsets would seem to suggest. Especially since the worst offenders, big coal-fired plants, are not the ones that renewables will substitute for; solar and wind power are not good replacements for baseload power. Instead, renewables are likely to take relatively clean (and expensive) natural gas plants offline, since those are the ones that provide "extra" power to the system. Similarly, by giving villagers in Goa energy-saving CFL bulbs, you do not lessen the amount of electricity consumed; rather, you make it possible for other people to purchase the extra energy freed up by more efficient lightbulbs. This may be excellent poverty policy, but it does not lessen the carbon footprint of your international flight.
The post is inspired by Al Gore's defence of his very energy hungry house by his use of carbon offsets.
No one has commented on the post at The Economist yet. I have no doubt there will be carbon offset defenders coming out in Al's defence, but it will interesting to see if they can counter the basic argument.
By coincidence...
In 1792, with a revolutionary glint in his eye, he made a pilgrimage to Paris, and was an appalled witness to the violence of the mob as they processed through the streets with bits of the bodies they had torn apart, like a grotesque parody of the enlightened surgical techniques he had gone there to learn....
Burch doesn't gloss over the unpleasant aspects of Cooper's personality: the vanity that sometimes confused the "theatre" of surgery with a love of self-display; the clumsy sense of humour that led him once to ask his hairdresser to reach into a tub of hair powder which he had replaced with monkey entrails; the willingness to use body-snatchers in his quest for new anatomical specimens; and especially the obsession with dissection that seemed to go well beyond the needs of medical science. If some of Cooper's experiments are hard to stomach, such as his decision to close the urethra of a rabbit merely to see what would happen (the rabbit died a slow and painful death), others are merely hard to fathom. One wonders what contribution to the knowledge of human anatomy was made by his public dissection of, among others, "elephants, cuttlefish, baboons, polar bears, walruses, lemurs, leopards, the lymphatics of a porpoise, kangeroos, tortoises, porcupines, panthers and seals and the stomach of a cormorant".
Quite the dissecting showman, wasn't he.
Gruesome WWII story
Over the course of four months before the defeat of the Japanese forces in March 1945, Mr Makino cut open the bodies of ten Filipino prisoners, including two teenage girls. He amputated their limbs, and cut up and removed their healthy livers, kidneys, wombs and still beating hearts for no better reason than to improve his knowledge of anatomy.
“It was educational,” he said. “Even today when I go to see doctors, they are impressed by my knowledge of the human body. But if I’m really honest, the reason we did it was to take revenge on these people who were spying for the Americans. Now, of course I feel terrible about the cruel thing that I did, and I think of it so often. But at the time what I felt for these people was closer to hatred than to pity.”...
The “operation” took about an hour; when it was over the body was sewn up and thrown into a hole in the earth. Eight more vivisections followed, Mr Makino said, up to three hours long. “Over the course of time, I got used to it,” he said. “We removed some of the organs, and amputated legs and arms. Two of the victims were women, young women, 18 or 19 years old. I hesitate to say it, but we opened up their wombs to show the younger soldiers. They knew very little about women - it was sex education.
Rather like young boys who play cruelly with insects, isn't it?
And some Japanese wonder why people get upset over visits to Yasukuni Shrine.
A fundamental problem for Hawking Radiation?
The actual paper is here. (Actually, it seems to be a year old, so why is PhysOrg running it now?)
Its conclusion:
A robust statement of this result leads to a severe formulation of the black-hole information paradox: Either unitarity fails or Hawking’s semi-classical predictions must break down. The
no-hiding theorem rigorously rules out any “third possibility” that the information escapes from the black hole but is nevertheless inaccessible as it is hidden in correlations between semi-classical Hawking radiation and the black hole’s internal state. This provides a criterion to test any proposed resolution of the paradox: Any resolution that preserves unitarity must predict a breakdown in Hawking’s analysis [2] even for cosmologically-sized black holes.
Hey, I didn't say it was easy! But I am assuming that a "breakdown in Hawking's analysis" means that possibly Hawking Radiation doesn't exist. (Which, for any new readers of this blog, is relevant to the issue of whether micro black holes that may be created at CERN soon will evaporate and be no danger to the Earth.)
Tuesday, February 27, 2007
Gender and India
Many families therefore elect to not have a girl at all. Medical clinics -- which Sister Mary calls "womb raiders" -- have advertised "better 500 rupees now [for an abortion] rather than 50,000 rupees later" [for a dowry]. The first amount is about $11; the second is $1,100.
Dowries are theoretically banned under the 1961 Dowry Prohibition Act, but enforcement is poor and other religious groups such as Muslims and Christians have been caught up in the custom...
Surprisingly, it seems it is the richer areas that have the biggest problem:
She cites the Indian state of Haryana, just north of New Delhi, which has the country's second highest per capita income. It also has India's second worst sex ratio, after Punjab state to the west. For every 1,000 boys born in Haryana, just 820 girls were born, according to the 2001 census. In 1991, it was 879 girls.
Punjab is similarly wealthy; thus, instead of the poor killing their children, it's the rich, says Ms. Chowdhry, a former senior fellow at the Nehru Memorial Institute and Library.
"Punjab and Haryana are the two highest per capita income states, but they have such regressive trends," she says. "How can they call themselves modern?"
As for the extent of the problem worldwide:
Early this year, the British medical journal Lancet estimated the male-female gap at 43 million. Worldwide, Lancet said, there are 100 million "missing girls" who should have been born but were not. Fifty million of them would have been Chinese and 43 million would have been Indian. The rest would have been born in Afghanistan, South Korea, Pakistan and Nepal.
China gave an even bleaker assessment last month, with the government saying that its men will outnumber women in the year 2020 by 300 million.
There's a serious need for cultural re-education here.
UPDATE: if you don't trust the Washington Times on anything because of its right wing politics, you can read pretty much the same story (better written too) at The Guardian. The article confirms that richer areas in fact have the bigger problem:
India's paradox is that prosperity has not meant progress. Development has not erased traditional values: in fact, selective abortion has been accelerated in a globalising India. On the one hand there has been new money and an awareness of family planning - so family sizes get smaller. But wealthier - and better- educated - Indians still want sons. A recent survey revealed that female foeticide was highest among women with university degrees.
Wow. How is this going to be dealt with when even better education of the women is not helping?
The upside of gloom
...instead of optimism we have a kind of European baby-boomer guilt - the feeling that we are the last privileged generation. And it is definitely a European thing - you do not find the same gloom in rising parts of the world or in the US. And if Europeans in general tend towards pessimism as a reflection of their reduced weight in the world, perhaps European intellectuals are even more pessimistic as a reflection of their reduced weight in their own societies too.
But perhaps we should draw some optimism from the pessimism of the British and European thinking classes. After all, 100 years ago the main emotion in politics was hope - and then look what happened. The despairing tone of some of these responses may be a sign that we are on the threshold of a period of unprecedented peace and prosperity.
Reasons not to visit Saudi Arabia
Three Frenchmen who lived Saudi Arabia were killed by gunmen Monday in the desert on the side of a road leading to the holy city of Medina in an area restricted to Muslims only....
The men were resting on the side of a road about 17 kilometers (10.6 miles) north of Medina when gunmen fired at their car, instantly killing two of them, al-Turki said. The third man died later after he was taken to a hospital, and the fourth Frenchman was in serious condition at an area hospital, al-Turki said.
Women and children also were with the group but they were uninjured, the Interior Ministry spokesman said.
The area the group was traveling in is restricted for Muslims only. Non-Muslims are barred from the area around Medina and neighboring Mecca, the holiest cities in Islam. ...
Al-Turki said the group was probably making a Muslim pilgrimage. But it was possible they were traveling to another ancient site north of Medina where the Saudi government recently started allowing non-Muslims to visit.
Were they killed for not looking like Muslims? Nice country.Monday, February 26, 2007
Oh no, Maxine
Even before it was known whether she really wanted to run for Parliament, it seemed to me that her background as the journalist with whom politicians of both sides could enjoy a friendly lunch/interview (even though it may have been "on the record") made it a little unfair of her to now want to actually be a political player. Isn't it likely that as a politician she is in a position to abuse information gleaned in her former occupation, which probably traded to some extent on a perceived trustworthiness to keep certain comments and asides confidential?
You could probably argue this for almost all political journalists, and say that you can't have a rule that they should not run for Parliament.
But still, with McKew, it seems to me a question of the style of some of her journalism which makes it questionable. Of course, all Liberals interviewed by her knew she was married to a key Labor identity, and that may have made them more cautious anyway, but I don't know. Maybe she was still able to charm comments out of them which they would now regret having made.
The other argument may be that she could cause just as much harm by being a Rudd staffer anyway. That would be true, but all politicians need media advisors and they are often former journalists. I just feel that is part of the political territory, but I still don't like journalists running for Parliament, or at least ones that you can imagine politicians finding charming. (By this criteria, I would have no objection to Margo Kingston or Alan Ramsay running for Parliament!)
Speaking of mice...
Bryan Appleyard's blog brought this to my attention. (Has it been on LGF before? If not, I guess it will be soon.)
Saturday, February 24, 2007
Rat excitement in New York
I find rats sort of cute, but there are limits as to where I would prefer to meet them.
Friday, February 23, 2007
Rocket explosion over Australia
Pebble bed in China
It gives the impression that it is working fine already, but the detail was slim. It was good to see what the "pebbles" actually look like.
Profitable things to do on the Moon
I seem to recall that some years ago there was a proposal for privately funding a lunar rover to be operated remoting by paying customers on earth. Sounded cool to me.
Whoever does it, they really need to get some robotic exploration of interesting areas on the moon going. The lunar poles, and areas with possible lava tubes, are where I would be headed first.
Losing interest in cinema
It is almost certainly something to do with my stage in life, and if I was younger I would take risks again in seeing movies which may or may not turn out to be better than expected. But at the moment, I am lucky to be seeing one adult movie a year at the cinema, plus maybe another 2 child-friendly ones. The one adult movie, chosen because by all accounts I should like it, has been a disappointment in the last few years.
I only saw the last Star Wars on DVD about 6 months ago. Disappointing. (I reckon Orson Scott Card did a good job criticising the vacuousness of its moral philosophy here.) It's gorgeous to look at, but even that is just a cover for inadequate emotional logic in the story telling. I liked Village Voice's take on the visual style:
In debt to lurid sci-fi-novel cover art, Revenge of the Sith achieves the ultimate in what could be called Baroque Nerdism, a frame-filling aesthetic of graphic overdesign that began with The Phantom Menace and has now been jacked up to an absurd degree. Half the film takes place at dawn or dusk, so that the Marin County team can geek out on artificial roseate glow—a sugary luminence used so frequently one wonders if they developed a Maxfield Parrish plug-in to get the job done. On metropolitan Coruscant, background windows buzz with distant air-cars of various models; on DVD zoom mode, they will likely reveal individual license plate numbers.
What about Babel, this year's serious movie Oscar contender? I am not encouraged by the David Denby review in the New Yorker:
My friend Herbert was rude to his mother last spring, and, some time later, Mt. St. Helens erupted. And three girls I met on the Central Park carrousel were kicked out of school for smoking, and the price of silver dropped by forty thousand rupiah in Indonesia. With these seemingly trivial events from my own life, I illustrate the dramatic principle by which the Mexican-born director Alejandro González Iñárritu makes his movies. Iñárritu, who made “Amores Perros” (2000), is one of the world’s most gifted filmmakers. But I had the same reaction to “Babel” that I had to his most recent movie, “21 Grams” (2003): he creates savagely beautiful and heartbreaking images; he gets fearless performances out of his actors; he edits with the sharpest razor in any computer in Hollywood; and he abuses his audience with a humorless fatalism and a piling up of calamities that borders on the ludicrous.
As I have commented before, I think cinema goes through joyless phases from time to time, but this current one is lasting an inordinately long time. It's like waiting for a drought to break.
UPDATE: good to see it's not just me. I wrote this post before I read this Slate story, claiming that some Oscar voters are deliberately leaving the "Best Movie" ballot blank!
Also, it's probably an appropriate time to note again that some of the loss of interest in cinema is partly to do with the lack of charm or reliable likeability in the current raft of mainstream Hollywood actors. Can't any studio sign up a bunch of new, young-ish stars and promote it a new start in something resembling the old studio talent system? (Sign them up to an updated morals clause too, so they can be dumped as soon as they start turning up at parties without underwear.)
UPDATE 2:
I just read Danny Katz talking about Babel:
There was a huge selection of teary, jerky movies this year: there was the chirpy-weepy Little Miss Sunshine, and the baklava-syrupy The Pursuit Of Happyness - but the award goes to Babel, which was so magnificently miserable, for two and a half hours, all I could hear was the cast crying, the audience crying, and even the projectionist crying, from inside his sound-proofed, triple-glazed glass booth. I saw this film with my friend, Roger, and afterwards we were so shattered by the powerful themes of human fear and cultural isolation, we sat down in a cafe and discussed the movie's most profound question: how do you pronounce "Babel"? - I thought it was pronounced "Babble" but Roger said it was pronounced "Bay-bel" and I said "No, I'm pretty sure it's Babble" and he said "NO, IT'S DEFINITELY BAY-BEL" and this went on for about an hour and a half, yeah I really love those intense kind of post-cinema intellectual discussions.
Made me laugh.
Thursday, February 22, 2007
Careers to avoid: clowning in Cucuta
Two circus clowns have been shot dead during a performance in the eastern Colombian city of Cucuta, police say....
Local reports say the audience of about 20 people, mostly children, thought the shooting was part of the show before realising both men had been killed.
Last year, a prominent circus clown, known as Pepe, was also shot dead by a unknown assailant in Cucuta.
This is story crying out for further explanation.A new concept for the day
I will soon be doing a post about cosmologist Frank Tipler too, and his upcoming book claiming to show the physics behind various miracles in the Bible (or the New Testament, at least.) His previous book "The Physics of Immortality" got rubbished by most of his scientist colleagues, but I expect that will be nothing compared to the shellacking the new book is likely to take.
Targetting for beginners
Wednesday, February 21, 2007
Debating the multiverse
Tuesday, February 20, 2007
Good surgeons play with monkey
The LA Times notes:
New research today found that surgeons with the highest scores on "Super Monkey Ball 2," "Stars Wars Racer Revenge" and "Silent Scope" performed best on tests of suturing and laparoscopic surgery.....
"For as little as three hours a week, you could help your children become the cyber-surgeons of the 21st century," said Dr. James C. Rosser Jr. of Beth Israel Medical Center in New York and lead author of the study in the Archives of Surgery.
The research looked at 33 surgeons attending a course on laparoscopic surgery and found that their game-playing skill was a better predictor of success on the surgical tests than years of medical practice or number of surgeries performed.
Expertise with "Super Monkey Ball 2," which involves steering a ball containing a monkey down a serpentine track while simultaneously targeting bananas, was most closely linked with high test scores.
No news today
Monday, February 19, 2007
The cause of ice ages
The comments to the post include these one, which I add here just to give some background on the whole history of ice ages:
...the question "What triggers ice ages?" only applies to the late Pleistocene (since about 800,000 years ago). From the onset of northern-hemisphere glaciation (about 3 million years ago) to the "mid-Pleistocene transition" (about 800,000 years ago), glacial advance and retreat follows a strong 41,000-year cycle, which has led to its being called "the 41 ky world" (Raymo & Nisancioglu 2003, Paleoceanography, 18, 1011). This is surely due to the changes of earth's obliquity, since changes in the amplitude of the climate signal correspond to changes in the amplitude of the obliquity cycle (Lisiecki & Raymo 2007, Quaternary Science Reviews, 26, 56).
But since the mid-Pleistocene transition (not precisely since, this happens intermittently before that time) glacial changes are dominated by a 100,000-year cycle. The behavior during the "late Pleistocene" was originally attributed to changes in earth's eccentricity, but that idea has now fallen out of favor. Huybers & Wunsch (2005, Nature, 434, 491) and Huybers (Quaternary Science Reviews, 26, 37) have convincingly shown that even during the late Pleistocene, the timing of deglaciations is strongly correlated to the obliquity cycle. They find no such relationship for the precession cycle or the eccentricity cycle.
(This comment seems to be by someone the scientists who run Real Climate trust.)
And this comment is make by one of the Real Climate authors, in response to the question of when would we be next due for an ice age were it not for global warming:
We've just come out of one of the big every-100KYr glaciations, and the normal course of events is to build up to another biggy through a series of small, short glaciations over the next 100KYr. In the normal course of events, the first try at an ice age would be due sometime in the next 20,000 years but I myself wouldn't try to pin it down more than that. One of the most interesting attempts so far to say what global warming might do to the glacial cycle is in the paper (pdf) by Archer and Ganopolski that appeared in the AGU journal GGG. I'll leave it to David to say whether that has been followed up by more detailed GCM work.
By the way, I don't post this to express scepticism about legitimate concern over CO2 levels, but it is interesting that something as significant as ice ages are not properly understood yet.
Japanese culture corner
I guess it's a similar phenomena to the decline of the Western as a genre. Anyone who was a child in the '60's can remember just how many cowboy and wild west shows were made in those days. I suspect the 1950's was probably the height of its popularity in the cinema, but I could be wrong. TV now is dominated by gritty crime shows, I suppose, and plain crap of all varieties. (Someday, a good sitcom about adults that doesn't always deal with sex will emerge again.)
Anyway, this got me thinking about the one childhood Japanese show that I can recall - The Samurai. The Wikipedia entry is relatively short, but points out that the show was very popular in Japan, Australia and the Phillipines, but was hardly shown anywhere else. How odd.
For those who can vaguely recall what the lead character Shintaro looked like, here he is:
(The picture is from a small fansite here.) Not exactly rugged good looks, but a sister-in-law of mine used to swoon over him, so she tells me.
I think most kids were most impressed by the evil ninja who jumped up backwards into trees, snuck around the houses with paper walls, and had an endless supply of throwing stars.
It would probably be seen as hopelessly violent for children today.
Pearson visits home
Talk about your intractable social problems. It's also interesting to note yet again how communities as a whole faired so much better under the Christian mission system.
Sunday, February 18, 2007
Easy global cooling?
Benford has a proposal that possesses the advantages of being both one of the simplest planet-cooling technologies so far suggested and being initially testable in a local context. He suggests suspension of tiny, harmless particles (sized at one-third of a micron) at about 80,000 feet up in the stratosphere. These particles could be composed of diatomaceous earth. "That's silicon dioxide, which is chemically inert, cheap as earth, and readily crushable to the size we want," Benford says. This could initially be tested, he says, over the Arctic, where warming is already considerable and where few human beings live. Arctic atmospheric circulation patterns would mostly confine the deployed particles around the North Pole. An initial experiment could occur north of 70 degrees latitude, over the Arctic Sea and outside national boundaries. "The fact that such an experiment is reversible is just as important as the fact that it's regional," says Benford.
"Benford" is Gregory Benford, the scientist/science fiction writer. A couple of years ago he was in Canberra talking up the prospects of a rotating space mirror as an engineering solution to global warming. He is evidently looking at more down to earth options now.
The quote is from Technology Review, which seems a pretty neat publication generally. What it doesn't explain is how to get the silicon dioxide up there, and how long it will stay. I thought you also were not supposed to breath the stuff (from what I recall of using diatomaceous earth in an old pool filter,) so I am not sure what is meant to happen when it comes back to earth.
Friday, February 16, 2007
The history of declining birthrates
Before the 1800s, children were educated at home or in church. Children became more expensive to care for and less helpful around the house once public schooling became available. At the same time, women were freed up from all-day children-rearing, allowing mothers to enter the paid labor force.
However, money isn't the only incentive for smaller families, experts say.
"We know for sure that you don't have to reach a high level of per capita income for fertility to decline, but we don't know exactly what sets it off," said historian George Atler at Indiana University. "Whether it's general change or attitudes about birth control is still a question debated among demographers today.
It's interesting, but still doesn't help answer why some Muslim countries have such high birth rates. I can't say I have ever seen much explanation of that.Who knows...
First one:
A new report on climate over the world’s southernmost continent shows that temperatures during the late 20th century did not climb as had been predicted by many global climate models....
“It’s hard to see a global warming signal from the mainland of Antarctica right now,” he said. “Part of the reason is that there is a lot of variability there. It’s very hard in these polar latitudes to demonstrate a global warming signal. This is in marked contrast to the northern tip of the Antarctic Peninsula that is one of the most rapidly warming parts of the Earth.”
Bromwich says that the problem rises from several complications. The continent is vast, as large as the United States and Mexico combined. Only a small amount of detailed data is available – there are perhaps only 100 weather stations on that continent compared to the thousands spread across the U.S. and Europe. And the records that we have only date back a half-century.
The second report is about vast amounts of water under the ice:
Scientists using NASA satellites have discovered an extensive network of waterways beneath a fast-moving Antarctic ice stream that provide clues as to how "leaks" in the system impact sea level and the world's largest ice sheet. Antarctica holds about 90 percent of the world's ice and 70 percent of the world's reservoir of fresh water.
It's a very interesting place.
Ranking the sharks
The number of attacks in the United States, the world’s leader, dipped slightly from 40 in 2005 to 38 in 2006; well below the 53 recorded in 2000, he said.
As in past years, Florida was the world’s shark capital, with 23 attacks, Burgess said. This was slightly higher than the 19 cases reported in 2005 but considerably lower than the annual average of 33 between 2000 and 2003, he said.
Elsewhere in the world, Burgess tracked seven attacks in Australia, four in South Africa, three in Brazil, two in the Bahamas and one each in Fiji, Guam, Mexico, New Zealand, Puerto Rico, La Reunion, Spain and Tonga.
Someone should do it on a per capita basis to get a better idea of how competitive our sharks are internationally.
The Catholics take over
Average Sunday attendance of both churches stood even at nearly one million in 2005, according to the latest statistics available for England and Wales, but the attendance at Mass is expected to soar.
A Church of England spokesman said: “I don’t think you can talk in terms of decline in the Church of England. It is fairly clear that with small fluctuations the worshipping population of the Church of England is 1.7 million a month. That is actually a stable figure.”
But looking at the total numbers shows how very, very few Anglicans attend church:Figures for 2005 show that there are 4.2 million Catholics in England and Wales, under one fifth the 25 million baptised Anglicans and double the number of Muslims.
If it's anything like here, the migrants are going to have to bring their own priests with them. It will also be interesting to see if it means a more conservative Church, and a more conservative influence on politics. I certainly get the impression that the Tories have virtually given up on espousing anything much resembling social conservatism.
Thursday, February 15, 2007
On a meta-blogging note...
Anyway, a blog like one is just as much use to myself in terms of keeping track of articles and thoughts as it is a popularity exercise. But it would be nice to have a better idea about what sort of posts I make that have the most interest to most people.
I must go over to Catallaxy and read the recent reader's analysis post. I haven't got around to that yet...
Hitchens and Hillary
Great moments in Council politics
Some interesting energy stories
The standard 1.5 MW structure is now 40 stories, taller than the statue of liberty. The 3 MW towers waiting in the wings are as tall as New York's Citicorp Center, the third tallest building in Manhattan.
That is big.
2. This story was in Newsweek in January, but I missed it 'til now:
The Kremlin has set about recasting Russia's once top-secret nuclear industry as the world's leading mass marketer of cheap, reliable reactors. As energy prices soar, nuclear power has been gaining in popularity, and Russia is the market leader in cut-price reactors....
"Our power stations are not a bit worse than anyone else's," says Sergei Shmatko, the president of Atomstroyexport, Russia's atomic-power-station construction company. "My dream," he adds, "is to make the export and construction of our nuclear stations as simple and as fast as putting IKEA furniture together."
3. My favourite underdog in the clean energy stakes, the Pebble Bed Reactor, continues to attract very little attention here, but in South Africa it is definitely going ahead after appeals against development approval were rejected. First demonstration plant due by 2010, and commercial modules may be available by 2013.
The cut that might sent you mad!
I wonder whether such a connection might only be noticed now due to (what I presume was) the relative infrequency of the operation until about the 1970's. Is the first big wave of men who had the operation only now reaching advanced ages?
(There is also the issue of how the operation is done. From what I read, sealing both ends was popular, but appears to be associated with increased risk of long term pain as a side effect. The new trend is therefore to leave the tap open, so to speak. This was the subject of my previous post here.)
More research needed, but personally I have never liked the idea of letting one's "boys" get out into the blood stream where they don't belong.
A new type of black hole to ask CERN about, as well as "bubbles of nothing"
Just like the central black hole, the ring would be defined by its event horizon, a boundary beyond which nothing can escape the object's gravity. The ring could be thin like a rubber band or fat like a doughnut, and the rotation would flatten it – "like a doughnut that you have squashed," says Elvang. The spinning ring would also drag space-time around with it, making the central black hole spin as well.
The black Saturn can only exist in a space with four dimensions, rather than the three we inhabit. In 3D, a black ring is impossible, so there are no big black Saturns out there for astronomers to spot – but at a microscopic level, they might really exist....
If extra dimensions exist, black Saturns might be produced in the Large Hadron Collider (LHC) particle accelerator in Geneva, due to open at the end of 2007. Because there are so many ways to make a black Saturn, with different sizes of ring and different spins, they might even be produced in greater numbers than 'ordinary' black holes.Actually, I had noticed the arxiv paper on this recently, but as it was not clear whether the authors thought they may be made by a particle accelerator, I did not post about it.
New Scientist notes that, as with any micro black hole, the physicists expect it will evaporate instantaneously into Hawking Radiation, but as long time readers are aware, a few credible scientists wonder whether HR really exists.
So, if a stable (non evaporating) "black saturn" is created, would its ability to absorb particles be greater that your "normal" micro black hole? How would a string of them created close together interact? Let a bunch of slow moving ones sink into the centre of the earth and what happens?
Of course, CERN's other big argument against there being any danger from micro black holes is that the moon and earth have been bombarded by cosmic rays with much higher energies for billions of years, so if they are still here any micro black holes that can be created are not planet eaters. However, as long time readers would know, there are arguments that question this analysis. (Basically, ones created at CERN may be slow moving and readily fall into the earth. Ones made by cosmic rays move fast and may zip right through most astronomical bodies)
(One day I will get around to tagging my old posts on micro black holes, but my first long article is here. For the others, a use the blog search on this page and they will all appear.)
My argument remains that CERN appears to have done a poor job at taking risk analysis seriously. They have very high expectation that HR is really the answer, even though this radiation has not been observed anywhere. (Yet it is possible that the decay debris could be observed in the Earth's atmosphere if evaporating micro black holes are being created there by cosmic ray collisions. It is just, I think, that not enough experimental work has been done yet to clearly answer the question of whether it is there.)
There is plenty of theoretical work coming out all the time that raises questions about the very nature of black holes and their decay process that should be taken into account in proper risk assessment. If CERN is actually looking at each case and coming up with good reasons why they are not a risk, even if HR does not exist, it would nice of them to tell us. Instead, it seems to just all be on a "trust us we know what we are doing" basis.
Here's one other thing I have been reading about lately: the idea of "bubbles of nothing" being created as part of black hole decay. Some of these, if I understand it correctly, could expand and be a danger. As noted in a recent arxiv paper:
Horowitz [20] has recently argued that a class of charged bubbles of nothing are a possible
decay product of black holes/strings/branes in quantum gravity. If true this would be a new,
unsuspected and disastrous endpoint of quantum black hole dynamics.
They don't explain exactly what they mean by "disastrous endpoint", but I would like to know more. (It may be that the authors of the paper think there is no danger anyway, but they do not write in anything resembling plain enough English for the layperson to understand their points.)
Has CERN looked at this work? Are there reasons to also question the "cosmic ray" analogy that I expect may also be used to argue against danger?
All question worth asking, I think, but getting answers is not easy.
Wednesday, February 14, 2007
Why 6 megapixels is all you'll need
If a 6 megapixel camera is all that any amateur photographer really needs, and this is virtually the entry level size now, what features are the manufacturers going to come up with to entice us to keep upgrading?
Why England won't disappear under ice any time soon
Good to see such reporting in the NYT.
Tuesday, February 13, 2007
Obama reviewed
The overall feeling you get, though, is that his life experiences so far mean that he is not exactly ready for the Presidency.