Archive for the ‘Science’ Category

In case you missed it

Monday, February 8th, 2010 by adam

Water, water everywhere, and not a drop to drink.

Albion

Friday, January 8th, 2010 by cwalsh

Snow-covered Great Britain

Courtesy of the BBC.

Things Darwin Didn’t Say

Tuesday, January 5th, 2010 by adam

There’s a great line attributed to Darwin:


It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change.”

The trouble is, he never said it. Background here.

Original sources are important and fun.

Monkeys krak-oo krak-oo

Tuesday, December 8th, 2009 by adam

monkey-cat.jpg
According to “Campbell’s Monkeys Use Affixation to Alter Call Meaning:”

We found that male alarm calls are composed of an acoustically variable stem, which can be followed by an acoustically invariable suffix. Using long-term observations and predator simulation experiments, we show that suffixation in this species functions to broaden the calls’ meaning by transforming a highly specific eagle alarm to a general arboreal disturbance call or by transforming a highly specific leopard alarm call to a general alert call. We concluded that, when referring to specific external events, non-human primates can generate meaningful acoustic variation during call production that is functionally equivalent to suffixation in human language.

Sorta via Wired, who, not being monkeys, did not use the invariable suffix “here’s a link.”

Photo: Macque monkey and kitten by Kaz Campbell.

Deny thy father and refuse thy gene sequence?

Tuesday, November 24th, 2009 by adam

There’s a fascinating article in the NYTimes magazine, “Who Knew I Was Not the Father?” It’s all the impact of cheap paternity testing on conceptions of fatherhood. Men now have a cheap and easy way to discovering that children they thought were theirs really carry someone else’s genes.

This raises the question, what is fatherhood? Is it the genes or the relationship? There’s obviously elements of both, but perhaps there’s a rule in here: adding identity to a system makes the system more brittle.

Another good metaphor, killed by science

Saturday, October 17th, 2009 by adam

Wired has a First Look: Dyson’s Blade-Free Wonder Fan Blows Our Minds:

Dyson-Bladeless-Fan.jpg

Future generations will have no idea why the shit hitting the fan is any worse than it hitting anything else.

Atoms, Photographed

Tuesday, September 15th, 2009 by adam
atoms-photographed.jpg

The pictures, soon to be published in the journal Physical Review B, show the detailed images of a single carbon atom’s electron cloud, taken by Ukrainian researchers at the Kharkov Institute for Physics and Technology in Kharkov, Ukraine….To create these images, the researchers used a field-emission electron microscope, or FEEM. They placed a rigid chain of carbon atoms, just tens of atoms long, in a vacuum chamber and streamed 425 volts through the sample. The atom at the tip of the chain emitted electrons onto a surrounding phosphor screen, rendering an image of the electron cloud around the nucleus.

InsideScience, “First Detailed Photos of Atoms.”

Caster Semenya, Alan Turing and “ID Management” products

Saturday, September 12th, 2009 by adam

caster-semenya-cover-girl.jpgSouth African runner Caster Semenya won the womens 800-meter, and the attention raised questions about her gender. Most of us tend to think of gender as pretty simple. You’re male or you’re female, and that’s all there is to it. The issue is black and white, if you’ll excuse the irony.

There are reports that:

Two Australian newspapers reported Friday that gender tests show the world champion athlete has no ovaries or uterus and internal testes that produce large amounts of testosterone. … Semenya is hardly alone. Estimates vary, but about 1 percent of people are born with abnormal sex organs, experts say. These people may have the physical characteristics of both genders or a chromosomal disorder or simply ambiguous features. (“When someone is raised female and the genes say XY,” AP)

For more on the medical end of this, see for example the “Consensus statement on management of intersex disorders” in the Journal of the American Academy of Pediatrics.

The athletics associations rules don’t cover all of these situations well. The real world is far messier and more complex than most people have cause to address. There are a great many apparently simple things that are really complicated as you dig in.

What the sports associations and news media are doing to Semenya is reprehensible. (There are over 10,000 stories listed on Google News, versus 13,000 for Derek Jeter, who just broke a Yankees record.) She didn’t come into running knowing that she had no ovaries. Having to deal with the identity issues that her testing brings up under the harsh light of the entire world (including me) is simply unfair.

It’s unfair in almost the same way as the British government’s treatment of Alan Turing, the mathematician who Time named one of the 100 most important people of the 20th century for his fundamental work on computers and cryptanalysis. Turing was also a convicted homosexual who committed suicide because of his “treatment” with estrogen, which caused him to become impotent and to develop breasts.

This week, Gordon Brown issued an apology entitled “Treatment of Alan Turing was ‘appalling’:”

While Turing was dealt with under the law of the time and we can’t put the clock back, his treatment was of course utterly unfair and I am pleased to have the chance to say how deeply sorry I and we all are for what happened to him. Alan and the many thousands of other gay men who were convicted as he was convicted under homophobic laws were treated terribly. Over the years millions more lived in fear of conviction.

I am proud that those days are gone and that in the last 12 years this government has done so much to make life fairer and more equal for our LGBT community. This recognition of Alan’s status as one of Britain’s most famous victims of homophobia is another step towards equality and long overdue.

Sports officialdom and state governments are different. Sports are voluntary associations, although athletes have little influence on the choices of international sports functionaries. Either way, watching the chaotic world crash onto the inflexible bureaucracies is tremendously frustrating to me.

As more and more of the world is processed by Turing Machines, assumptions that seem obvious to the programmer are exposed harshly at the edges. A friend with a Juris Doctorate recently applied for a job online. The form had a field “year you graduated from high school” that had to be filled out before she went on. Trouble is, she never did quite finish high school. She had the really relevant qualification-a J.D. from a good school. But she had an emotionally wrenching choice of lying on the form or not applying for the job. She eventually chose to lie, and sent a note to the HR people saying she’d done so and explaining why. I doubt the fellow who wrote that code ever heard about it.

I have a challenge to anyone involved in creating an online identity management system: How well does your system handle Semenya?

The typical answer is either that “that’s configurable, although we don’t know if anyone’s done exactly that” or “she’s an edge case, and we deal with the 95% case really well.” If you have a better answer, I’d really like to know about it. And as a product guy, those are likely the decisions I’d make to ship.

I’ll close by echoing Brown’s words: We’re sorry, you deserve so much better.

If I Were the Type to Say “I Told You So” Dept.

Friday, August 28th, 2009 by arthur

Which I’m not — but if I were, now would be the time.
‘Unbreakable’ quantum cryptography hacked without detection using lasers

Not because it is easy, but because it is hard

Thursday, July 16th, 2009 by adam

Forty years ago today, Apollo 11 lifted off for the moon, carrying Buzz Aldrin, Neil Armstrong and Michael Collins.

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The Boston Globe has a great selection of photos, “Remembering Apollo 11.” (Thanks to Deb for the link.)