ABSTRACT
Chapter 5 starts by trying to unravel the train of thought that led Aristotle to profess, in the Categories, the thesis of the exceptional character of the pairs of relatives knowledge/knowable and perception/perceptible in what regards natural simultaneity. Then, in section two, Aristotle’s mature views on relatives in the Metaphysics are taken into account. In the final section of Chapter 5, the texts of Cat. 7 and Metaph. V 15 are contrasted, concluding that the latter text can be seen as being committed to the rejection of said thesis, thus showing that he has evolved from the former treatise to the latter on the specific point of the natural simultaneity of relatives.
