Contrary to the widespread belief, the problem of the emergence of classical mechanics
from quantum mechanics is still open. In spite of many results on the ¯h → 0
asymptotics, it is not yet clear how to explain within standard quantum mechanics the
classical motion of macroscopic bodies. In this paper we shall analyze special cases
of classical behavior in the framework of a precise formulation of quantum mechanics,
Bohmian mechanics, which contains in its own structure the possibility of describing
real objects in an observer-independent way.