Machines smart enough to do anything for us will probably also be able to do anything with us: go to dinner, own property, compete for sexual partners. They might even have passionate opinions about politics or, like the robots on Battlestar Galactica, even religious beliefs. Some have worried about robot rebellions, but with so many tort lawyers around to apply the brakes, the bigger question is this: Will humanoid machines enrich our social lives, or will they be a new kind of television, destroying our relationships with real humans?

You do not need to be Alan Greenspan to understand that the more things a machine can do, the bigger the market.