Re: How would we know?
I have always thought that when you see infinity in your calculations then it means you have made a mistake in your maths, because infinity only exists in theory, not reality. A infinite number of universes would require an infinite amount of energy.
As much as the multiverse theory might be a useful theoretical model, it just seems a little too convenient to explain everything by saying that "things are the way they are because we just happen to live in the universe that is like that". It is semantically identical to the creationist argument of "things are the way they are because that's how god made them".
In my layman's opinion it's the kind of utter bollocks that gives real science a bad name.