Perfect rationality can still go wrong. Consider for example a perfectly rational player playing the Monty Hall game. The rational thing to do is to switch doors. But that can still turn out to be wrong. A perfectly rational individual can still be wrong.
Perfect rationality can still go wrong. Consider for example a perfectly rational player playing the Monty Hall game. The rational thing to do is to switch doors. But that can still turn out to be wrong. A perfectly rational individual can still be wrong.
The rational thing to do might be to look behind the doors, but in any case, perfect rationality is not perfect omniscience.