  Though scientifically unconvincing, the Broglie-Bohm model has the virtue of
reproducing the observational predictions of quantum mechanics while being
conceptually crystal-clear. Hence, even if we do not believe in it, we may find
it useful in suggesting ways of removing conceptual difficulties. This
procedure is here applied to the Schr\"odinger cat riddle (in its Wigner
version). The outcome yields tentative views on the relationship between
mentality and physical reality.
