Blue Orange
Gone to Texas
There's also a conflict between the meanings of 'rational' as 'acting according to reason and facts' and the more colloquial meaning (also present in economics and game theory) of 'acting in your own best interests'. Some degree of overconfidence is sometimes useful in social situations, for instance, and in cases of deception partially believing your own BS can be useful.
So if believing in untrue things gives the wizard supernatural powers (as some here have suggested), it may be rational in the second sense but not the first.
So if believing in untrue things gives the wizard supernatural powers (as some here have suggested), it may be rational in the second sense but not the first.