AMA | October 2024

9224.132 - 9247.26 Sean Carroll

Indeed, they are not features of the state at all. They are observables. They can give you different answers. But the point is that the wave function in quantum mechanics is a function of just position. It's not separately a function of position and momentum. There's a separate thing called the wave function in momentum space, but it is derivable from the wave function in position space.