  Quantum mechanics clearly violates the weak equivalence principle (WEP). This
implies that quantum mechanics also violates the strong equivalence principle
(SEP), as shown in this paper. Therefore a theory of quantum gravity may not be
possible unless it is not based upon the equivalence principle, or if quantum
mechanics can change its mass dependence. Neither of these possibilities seem
likely at the present time. Examination of QM in n-space, as well as
relativistic QM equations does not change this conclusion.
