Was Hitler rational? This question has spawned vociferous debates among historians, and has fascinated every layman who has ever dipped into a biography of Hitler. In Hitler and Abductive Logic, Ben Novak argues that Hitler was rational--one of the most logical political leaders of modern times--but not according to ordinary inductive or deductive logic. Instead, Hitler used a new form of logic called abductive logic, which he used as a "trick" to seduce crowds and rise to power. Now, for the first time, the method that Hitler employed is revealed so that it can be recognized and combated.