[AnimalMuppet]

> Mathematics has no separate truth from the physical world - it's just a field of epistemological methods.

I don't think that can be right. First of all, there are many mathematical things that don't correspond to anything in the physical world. Second, I'm not sure that "epistemological methods" correspond very well to the physical world, either. (I mean, yes, in one sense it's something humans do in their heads, so it's part of biology, so it's part of the physical world, but that seems like a bit more than what we usually mean by "the physical world".)

More that that, though, we don't think of everything as physics. Biology, and even chemistry, we think of as separate disciplines. Thinking of mathematics as also a separate discipline seems perfectly reasonable.