I've always felt that the human-centered approach to computer science leads to more interesting, more exotic, more wild, and more heroic adventures than the machine-supremacy approach, where information is the highest goal.

America's Facebook generation shows a submission to standardization that I haven't seen before. The American adventure has always been about people forgetting their former selves - Samuel Clemens became Mark Twain, Jack Kerouac went on the road. If they had a Facebook page, they wouldn't have been able to forget their former selves.

A remarkable thing about the Silicon Valley culture is that its status structure is so based on technical accomplishment and prowess.

Human beings either function as individuals or as members of a pack. There's a switch inside us, deep in our spirit, that you can turn one way or the other. It's almost always the case that our worst behaviour comes out when we're switched to the mob setting. The problem with a lot of software designs is that they switch us to that setting.

Don't underestimate questions from the crowd; technology has made voters more informed than ever.

Space travel is the only technology that is more dangerous and more expensive now than it was in its first year. Fifty years after Yuri Gagarin, the space shuttle ended up being more dangerous and more expensive to fly than those first throwaway rockets, even though large portions of it were reusable. It's absurd.

What has happened to the good old-fashioned travel agent? I want to go to a really posh travel agent and have them organise everything for me. I don't want to do things on the Internet.

I am a nonparticipant of social media. I'm not much attracted to anything that involves the willing forfeiture of privacy and the foregrounding of insignificance.