Hanging by a thread

String theory is claptrap. By Gregg Easterbrook - Slate Magazine

This is a good review of one of two recent books that point out the trouble with string theory. Namely, it can hardly be called science at all until it comes up with some plausible way to test it. Perhaps the killer quote is this:

Today if a professor at Princeton claims there are 11 unobservable dimensions about which he can speak with great confidence despite an utter lack of supporting evidence, that professor is praised for incredible sophistication. If another person in the same place asserted there exists one unobservable dimension, the plane of the spirit, he would be hooted down as a superstitious crank.

The book in question is by Lee Smolin, a physicist of considerable standing. The other book out is by Peter Woit, who runs the "Not Even Wrong" blog (see my blogroll.) His blog is dedicated to deriding string theory, and I think he does a pretty good job. I suspect Smolin's book might be the better read, though.

Not Even Wrong is definitely the site to go to if you want evidence against the idea that scientists are idealists who are above career politics and catfighting. Some posts are particularly funny, such as this one about the fight with Lubos Motl (a pro-string theory scientist) over Amazon reviews of the anti string theory books.