The infinite set is the set of all cosmologies. An axiom of my personal metaphysics is that any assertion about the cosmos is almost surely wrong, including those informed by science. That's not a formal statement of the principle, but gets at it.

My belief is that human understanding of the cosmos is much more limited than we generally understand it to be. Relative to what (I believe) the cosmos contains, human beings have no more, and no less, capacity to understand it than any arbitrary animal. We can explain only that which is important and relevant to ourselves, and vast arenas are foreclosed even to our perception.