  For Zabarella the methods in the strict sense of the word are intellectual instruments proceeding from the known to produce knowledge of the unknown. Such methods have argumentative force and they deal with specific problems of the disciplines instead of arranging the contents of a whole discipline, as do the orders of presentation. As with orders, Zabarella denied the possibility of more than two methods.  He shows that other procedures, like the composition and division used in the hunt of definitions as well as the so-called dialectical syllogisms are not genuinely productive of knowledge and therefore not methods in the proper sense of the term.