We didn’t start out to do a search engine at all. In late 1995, I started collecting the links on the Web, because my advisor and I decided that would be a good thing to do. We didn’t know exactly what I was going to do with it, but it seemed like no one was really looking at the links on the Web — which pages link to which pages. In computer science, there’s a lot of big graphs. Right now, (the Web) has like five billion edges and two billion nodes. So it is a huge graph. I figured I could get a dissertation and do something fun and perhaps practical at the same time, which is really what motivates me.