If the professors fail to come out with answers to questions posed by us, and to present the evidence in support of their statements, we shall be forced to conclude that far from being serious academicians, they are cynical politicians hawking ad hoc or plausible explanations in the service of a party line. In fact, we shall be justified in saying that they are not Marxists but Stalinists. Marxism is a serious system of thought which offers consistent explanations. Stalinism, on the other hand, is an exercise in suppressio veri suggestio falsi in pursuit of a particular end.