I end up talking to recruiters from D.E. Shaw just about every six months. One time I showed up at a conference Sun put on in the city and asked a question about using the hardware for main memory databases and that got the attention of one of them.

Hedge funds are pretty cool and pretty lucrative, but the only thing I really want to do now is information extraction, semantic databases, stuff like that. Finish the job that Doug Lenat started. And if you think that's crazy, you're one less competitor that I have.