While a considerable portion of the text is devoted to the mechanics of the syllogism and the enthymeme, as well as the presentation of the inevitable lists which Aristotle characteristically constructs, by far the most important element of this little book is the philosopher’s division of humanity into two fundamental classes: those who are capable of learning through information, and those who are not.
This is such an important distinction that its complete absence from the schools and universities today is remarkable. It calls into question the basis of modern pedagogical systems and explains the mystery that has confounded every intelligent individual who has tried, and failed, to explain the obvious to another person. Indeed, it is comforting to have long-held suspicions about the intrinsic limitations of one’s fellow men confirmed so comprehensively.