I don't know about free will because it depends how you define it and it's not something I've ever understood, though it doesn't seem like a concept that is dependent on how the universe actually is in a physical sense.
The nature of knowledge is pretty vague too, but if you mean the concept of how we can ever know things, that also doesn't depend on how the universe physically is. In another universe with different laws of physics, it would still apply.
The nature of knowledge is pretty vague too, but if you mean the concept of how we can ever know things, that also doesn't depend on how the universe physically is. In another universe with different laws of physics, it would still apply.
The same is true of mathematics, for example.