If you look at the last 150 years, about every 30 years or so, a new scientific discipline emerges that starts spinning out technologies and capturing people's imaginations. Go back to 1900: That industry was chemistry. People had chemistry sets. In the 1930s, it was the rise of physics and physicists. They build on each other. Chemists laid the experimental understanding for the physicists to build their theories. It was three physicists who invented the transistor in 1947. That started the information revolution. Today, kids get computers.

The best way to let people go is to let them know when they're hired that it's an uncertain environment and that their job is always at risk and even if you let them go, it's not that you don't love them.

The value of a social network is defined not only by who's on it, but by who's excluded.

I think of futurists as people who have a particular attitude about the future. They're advocates for a certain kind of outcome. As a forecaster I am something very different. I am a professional bystander. I have opinions about the future, of course. But my whole posture is to be detached and to identify what I think will happen and not allow my judgments of what should happen to get involved.

I worry about a society that can remember everything.

When I lived in Japan in the 1980s, I once was mistaken for Paul Newman, and I didn't have much more hair than I do now. My first reaction was that staying in Japan might be good for my social life.

The arrival of television established a mass-media order that dominated the last 50 years. This is a personal media revolution. The distinction between the old order and the new order is very important. Television delivered the world to our living room. In the old media, all we could do was press our noses against the glass and watch.