Not saying that there is another universe. But if there were, would the laws be the same? I've heard Leonard Susskind explain that extraneous solutions of string theory could represent the environment in regions very far "away". So is it just small things like the physical constants being adjusted? Surely the laws cannot be different. For example, string theory depends on QFT which depends on QM. So it would be contractdictory to say that the laws are different in another universe using the very same principles that already exist in our universe. I mean, sure the quantum laws might behave slightly differently, but the idea of quantum law would still have to exist there, since we indirectly depended on QM to even posit other universes.