I can't seem to understand this. In Bohmian mechanics, particles have definite positions and are guided by a wave function governed deterministically by Schrodinger's equation. So if you knew a particle's initial position in a double slit experiment, you could predict exactly where it would end up. However, in standard quantum mechanics the final position of the particle is a question of probabilities.
This implies that in Bohmian mechanics we can never know exactly where the particle is, because then we could predict exactly where it would end up in a double slit experiment. Why is this? Or what have I misunderstood?
Thank you for any help.