The problem is that certain jobs create scenarios with imperfect information. The society of rational actors is a useful model, but so is a war of all against

The problem is that certain jobs create scenarios with imperfect information. The society of rational actors is a useful model, but so is a war of all against all. Smart people aren't immune to principal-agent problems. The 2008 crisis was created by exactly the smart people we're trying to be. We shouldn't stop trying, but neither should we be deluded that that is sufficient.