Why Can't We Discuss Intelligent Design?

I'd never had a heckler before. Usually, when I'm asked to give a talk, I discuss my research on termites and the remarkable structures they build. Usually, I'm glad just to have an audience. x But what I'd learned from termites had got me thinking about broader issues, among them the question of design in biology: Why are living things built so well for the functions they perform? So I wrote a book called The Tinkerer's Accomplice, which was my topic that day.

The trouble started