Is There a Hierarchy of Scales?

I like doing these AMAs. If I had more time, I would do them more. Terrible turnip says, what is your view on how specific a fundamental theory should be to feel right? It seems there is a paradox of sorts if one finds a theory such that there is only one viable self-consistent possibility,. On the other hand, if there are a huge range of possibilities, that would seem to make people uncomfortable. That's a non-trivial fact about the universe with respect to previous physics. Not only can we figure out something about the laws of the universe, but we can also use it as an inspiration for new theories.