The question of causality has haunted the history of Western metaphysics since the time of the Pre-Socratic philosophy. Hand-in-hand with attempts to address this question is the promise of unlocking larger and more complicated questions pertaining to human freedom. But what of novelty? In this brilliant extended essay Donald A. Crosby contends that, though novelty can't be comprehended without efficient causality, causality requires a concept of novelty; without it cause and effect relations are unintelligible and, indeed, impossible.