Handouts and Stephen Hawking

I was watching a documentary about Stephen Hawking the other week. Among the many interesting things I learnt was the fact that he doesn't use handouts at his talks. Or at least, he didn't at the talk that was shown in the film. I'm assuming that to be representative of his general practice.

For those not accustomed to the wonder that is the conference handout, an example is here. Its purpose varies. For me, it's a prop for your audience, a summary of what you're saying so that they can follow along while you're saying it and have a record afterwards. I think it should be clear enough that someone who wasn't there can read the handout and understand the basic idea of the talk. It might, if you use Powerpoint, be a printout of the slides (often this is what you will get).