The idea that if only the world had a complete of markets, wed be fine is an astonishing delusion. So many things that could happen in the future, there are clearly no markets for them at all and never will be. If we do not act in accordance with axiomatic rationality and maximis our subjective expected utility, it is not because we are stupid, but because we are smart. Our intelligence is designed for complex worlds, not simple ones. Human intelligence is effective at understanding complex problems within an imperfectly defined context. And ah and things an. I want to turn to modelling and methodology and the freedman's as if hypothesis. But before i do, i want to read a