  The dynamics of a quantum particle is governed by its wavefunction, which in
turn is determined by the classical potential to which it is subjected. However
the wavefunction itself induces a quantum potential, the particle `sees' the
sum of the classical and quantum potentials, and there is no way to separate
the two. Therefore in principle, part or whole of an observed potential may be
attributable to a quantum potential. We examine this possibility and discuss
implications.
