 I don't know if you remember from our discussion about Plato, but he had four characteristics of form. And if we reject Plato's conception of form, we had to reject one of these four characteristics. Now Aristotle rejects Plato's conception of form. He disagrees with him about form. So Plato's got four characteristics of form. Well then that means that Aristotle rejects one or all of those four characteristics. So which one or ones of the characteristics of form does Aristotle reject?