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Friday, March 26, 2010

Captain Skyhook

A skyhook, according to philosopher Daniel C. Dennett, is a source of design complexity that did not build on lower, simpler layers—in simple terms, a miracle. Dennett was apparently the first to apply the term to discuss a certain kind of retort to evolution. Writes Dennett:
The first use noted by the [Oxford English Dictionary] is from 1915: "an aeroplane pilot commanded to remain in place (aloft) for another hour, replies 'the machine is not fitted with skyhooks.'" The skyhook concept is perhaps a descendant of the deus ex machina of ancient Greek dramaturgy: when second-rate playwrights found their plots leading their heroes into inescapable difficulties, they were often tempted to crank down a god onto the scene, like Superman, to save the situation supernaturally. Or skyhooks may be an entirely independent creation of convergent folkloric evolution. Skyhooks would be wonderful things to have, great for lifting unwieldy objects out of difficult circumstances, and speeding up all sorts of construction projects. Sad to say, they are impossible. [p. 74]
Dennett uses the term extensively in his 1995 book, Darwin's Dangerous Idea: Evolution and the Meanings of Life (there are thirty-six page citations in the index, some of them spanning several pages of text).
    The danger in Darwin's idea that evolution by means of natural selection requires no skyhooks lay in the terrible quandary into which it pushed people who needed to believe in God. The project of believers who thought that truth was relevant to their belief came to be to try to prove either that species didn't really evolve in the first place or, if they did, that natural processes weren't adequate to explain their evolution. That is, God (or some skyhook, anyway) was necessary, after all.

Not all believers think truth relevant. As my friend Xavier commented once, about people who swear by astrology:
I've come to the realization that people's brains are wired in entirely different ways such that truth is as useless a concept to some as it is useful to others.
I suppose, for "full disclosure," that I'd better provide the rest of Xavier's comment, for he was counseling me on the futility of trying to convince certain people by appealing to reason:
As such, skepticism is either a personal endeavor or an endeavor pursued with like-minded individuals.
    To put it bluntly, when it comes to certain subjects, I just bite my tongue and see the conversations as an exploration into the human psyche.
Xavier appears to have developed better tongue-biting skills than I.

4 comments:

  1. Xavier is a smart guy. Was he the person at 101 I Pl?

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  2. That's Xavier! He did earn a PhD in physics/biophysics at Cal Tech, after all!

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  3. I'm thankful there are folks like you fighting the good fight.

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  4. Xavier, I don't flatter myself that I'm fighting any fight; it's more that I'm amusing myself, as though Don Quixote were riding about tilting at windmills for exercise and entertainment.

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