 The theory of the modal syllogism, however, was incomplete in the Prior Analytics, and in the hands of medieval logicians it saw a remarkable development. The first commentators tried to save Aristotle’s original theory and in the course of doing so produced some interesting logical theories, though in the end they were unable to make the system work. The next generation of logicians simply abandoned the idea of saving Aristotle and instead introduced new distinctions and developed a completely new theory that subsumed the logic of syllogisms.