Mohammed knew how to suppress reason, and he intuitively knew that by appealing to the Obsessive Compulsive trait of human psychology, it would divert the mind further and further from thinking objectively or rationally. Clearly he didn’t have an objective understanding of the mechanisms that Obsessive Compulsive principles operated on, however, he had an intuitive understanding of how to manipulate people, and that the easiest way to control them is by preventing them from thinking. Which in essence is a running scheme in the doctrine.