Bill Joy: The futures of cities is that most people are going to live in them. We’ll pass very soon in this century a situation where more than half the people are living in cities. Cities offer marvelous cultural possibilities because you have people dense enough that you can create a diversity of experiences. It’s kind of boring by comparison to be in a small town. But of course being in the country is wonderful too and that’s one of the wonderful things about the internet because you can see and experience cultural activities that are going on at a distance sort of through the net and have those kinds of experiences. But there’s still nothing in my experience like being in a city, being able to walk, people in cities have smaller ecological footprints. It’s great to see that the Chinese in their industrialization are working real hard on building greener cities and reinventing the cities so that they’re more walkable, they’re more pedestrian friendly, blocking off cars, blocking off motorcycles in the center of cities. These are all really good things. One scary thing about cities is the threat of terrorism because people are more densely populated, somebody with a political agenda can obviously do more damage and more psychological and physical damage in a city. How we deal with this I don’t completely know but the cities are so valuable to our spirits that I’m very optimistic about the futures of the cities as great places to live.