chunk: Observing that these two minds reach "divergent and incompatible consequences" in the spheres of morality and public affairs, Wells analyzes the reasons for which the past-oriented mind predominates and asserts that this is principally due to the evidently greater knowability of the personal past as compared to the future. But he argues that the inference from this attitude that the future is essentially unknowable does not square with "modern science, that is to say the relentless systematic criticism of phenomena." Not only has science made us knowledgeable about a distant, impersonal past, it also regards the ability successfully to predict to be a criterion of validity. Though the unpredictability of human behavior complicates the problem, the fact that "as individuals increase in number they begin to average out" means that "an inductive knowledge of a great number of things in the future is becoming a human possibility." Confessing himself to be among "those who believe entirely