n.
1.a Roman Catholic system of casuistry that when expert opinions differ an actor can follow any solidly probable opinion that he wishes even though some different opinion might be more probable
2.(philosophy) the doctrine that (since certainty is unattainable) probability is a sufficient basis for belief and action
Idiom of the Day
mean nothing to (someone)
to have no effect or feeling for someone
My uncle is very wealthy and to lose money in a business transaction means nothing to him.