They just need to be more rational than the general population. Usually politicians don't really decide things though, but they're putting the stuff experts tel

They just need to be more rational than the general population. Usually politicians don't really decide things though, but they're putting the stuff experts tell them into laws and arbiter between interests. You'll need governments deciding things anyway. Otherwise you can't come up with fair contracts when there's a difference of power in the parties of the contract (think e.g. costumer and manufacturer and food safety regulations), even when both sides are rational.