Essay in Physics Today: "Commentary: In Defense of Crazy Ideas"

This essay by David Stevenson does a very good job of making an excellent point.

(And, apropos, I received an e-mail called "What is Reality?", from a group of people working on a crazy idea, while I was reading this article.)

P.S. David Stevenson is a great classroom lecturer. I had him for half of AMa 95 at Caltech.