Economics professors teach the theory of rational behaviour, and some of us have done it for a long time and to numerous students. We love that theory as it allows us to explain the way sensible people behave. Also, it allows us to predict the outcome of their decisions. However, we have a theodicy problem much like the one of the theologists, who preach that God is good and almighty, and then come to look out of the window.
Rational man's crazy results
Our problem is: why does rational man gene