He concludes that Science has nothing to say against the doctrine of the Fall, but acknowledges a more philosophical problem. That the idea of sin presupposes a law to sin against and the first man could not commit the first sin. Lewis points out though that the doctrine doesn’t say the sin was a social sin but a sin against God, an act of disobedience. Lewis says, “We must look for the great sin on a deeper and more timeless level than that of social morality.”