" To view Schrodinger's wave as something real is to give it too much weight-it doesn't help us to understand the theory; on the contrary, it leads to greater confusion. Except for special cases, the Schrodinger's wave is not in physical space, and this divests it of all its intuitive character. But the main reason why Schrodinger's wave is a bad image of reality is the fact that when a particle collides with something else, it is always at a point: it is never spread out in space like a wave. If we conceive an electron as a wave, we get in trouble explaining how this wave instantly concentrates to a point at each collision. Schrodinger's wave is not a useful representation of reality: it is an aid to calculation that permits us to predict with some degree of precision where the electron will reappear. The reality of the electron is not a wave: it is how it manifests itself in interactions, like the man who appeared in the pools of lamplight, while the young Heisenberg wandered pensively in the Copenhagen night. "

― Carlo Rovelli , Quantum Gravity