Entrepreneuship is not a really "calculated risk", its a deeply uncalculated one on the contrary: leave your job (or your normal career track), get no revenues

Entrepreneuship is not a really "calculated risk", its a deeply uncalculated one on the contrary: leave your job (or your normal career track), get no revenues for an undefined while, bet most of your credibility on idea that may change or become irrelevant, etc... Teachers can tell stories about all of those, but they won't really "teach" them, since there are too personnal to be replicated.