  Various objections have been raised against Bohm's theory (for a detailed list and replies, see the entry on Bohmian mechanics, section 15). One main objection is that in Bohmian mechanics, the guiding field influences the particles, but the particles do not influence the guiding field. Another common objection is that the theory is involved with a radical type of non-locality, and that this type of non-locality is incompatible with relativity. While it may be very difficult, or even impossible, to reconcile Bohm's theory with relativity, as is not difficult to see from the above discussion, the type of non-locality that the minimal Bohm theory postulates in the EPR/B experiment does not seem more radical than the non-locality postulated by the orthodox interpretation and the GRW/Pearle collapse models.  