Views

"I suppose there are two views about everything," said Mark.

"Eh? Two views? There are a dozen views about everything until you know the answer. Then there's never more than one. But it's no affair of mine. Good night."

In math that's not always strictly true. In arithmetic, yes; but sometimes objects of very different types turn out to be equivalent to each other. A proof may be quite hard within one system, but in the equivalent class of objects in a different system may be quite easy. Relatively speaking, of course.