"You mean, like, besides the entire scientific field? Ponies questioning authority can lead to rebellion. Ponies questioning tradition can lead to innovation. And getting a pony to question their own sanity is probably one of the cruelest things you can do to them." Green trails off and rolls over. "Questions are powerful.... and dangerous. Uncertainty is a terrible thing. It can keep you up at night. Destroy your confidence. Make a pony question loyalties, friendships, or loves, and you can cause their lives to crumble under them."