But the view Heisenberg held of the nature of atoms and other particles required him to take a very special interpretation of the uncertainty between the momentum and location of particles-one that has come to be known as the "Copenhagen interpretation." Since he was committed to the view that reality is mathematically calculable "in every detail," and since we cannot calculate both the position and momentum of a particle, Heisenberg said that particles must not have both speed and location. This means that any particle for which we choose to measure either momentum or location only ever had whichever one of those properties we chose to measure! That is, if we find a particle's velocity, then it never had location; while if we find its location, then it never had velocity.(Clouser 155)From The Myth of Religious Neutrality - Revised edition.
Clouser is clearly stating that we cannot know the velocity and position of subatomic particles simply because we cannot measure it. Is this the reason for all the headaches? It seems too simple to me, and if Clouser is wrong-if there isn't some further evidence for particles having neither velocity nor position, he is greatly sacrificing his credibility. I think so enough to think that he wouldn't say what he said unless he had done his homework.