### Heisenberg's mystic path

How would one determine whether the position and momentum of a moving golf ball manifests simultaneously? One can calculate the trajectory of the ball by assuming that the position and momentum of its centre-of-mass act simultaneously, and then check at various points along the trajectory whether the ball is there at that instant in time. If, in addition, one can only do the latter by having other golf balls colliding with the original golf ball, one can in principle launch an ensemble of golf balls in an identical way and then check with other golf balls at various points along the identical trajectories of the ensemble. One will then find a correspondence which confirms that both position and momentum must manifest simultaneously with 100% accuracy at every instant in time. When doing this for electrons one finds similarly that the position and momentum must also manifest simultaneously with 100% accuracy while an electron moves through space. Therefore it follows a well-defined tra…