I eventually talked the business school into letting me take a year’s leave of absence, and I went down to MIT to work with some geneticists working on the nematode worm, which is a very good model of genetics, and by chance, again, one Tuesday afternoon I met David Botstein. He was a yeast geneticist who had recently come up with a brilliant idea for how to do human genetics, but what he really was lacking was a mathematical quality, because it needed a lot of mathematics to really develop it. So David and I just hit it off. We started talking. He was from the Bronx, I was from Brooklyn. We were arguing in the halls, having a great time, and one thing led to another, and I dropped everything else I was doing and began to work intensely with David on these ideas about human genetics.