J. Storrs Hall read the recent Robin Hanson post on economics and machine intelligence. Here's his suggestion:
It seems to me that one obvious way to ameliorate the impact of the AI/robotics revolution in the economic world, then, is simple: build robots whose cognitive architectures are enough different from humans that their relative skillfullness at various tasks will differ from ours. Then, even after they are actually better at everything than we are, the law of comparative advantage will still hold.
Boom, friendliness problem solved. Build robots with different cognitive architectures than us, and they will be forced to keep us around, due to Ricardo's law of comparative advantage. Sounds wildly naive to me.