I take it for granted that faced with a dilemma we must do something, so long as doing nothing counts as doing something. But the question is whether or not there is always a morally right answer. In cases where there isn't, I suppose we can just pick randomly, but that doesn't mean we've therefore made the right moral decision.
Are we ever damned if we do, and damned if we don't?
When someone is in a situation like that, they lower their standard for "morally right" and try again. Functional societies avoid putting people in those situations because it's hard to raise that standard back to it's previous level.
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