Retortion is the philosophical procedure whereby one seeks to establish a thesis by uncovering a performative inconsistency in anyone who attempts to deny it. It is something like that benign form of ad hominem in which person A points out to person B that some proposition p that B maintains is inconsistent with some other proposition q that B maintains. "How can you maintain that p when your acceptance of p is logically ruled out by your acceptance of q? You are contradicting yourself!" This objection is to the man, or rather, to the man's doxastic system; it has no tendency to show that p is false. It shows merely that not all of B's beliefs can be true. But if the homo in question is Everyman, or every mind, then the objection gains in interest. Suppose there is a proposition that it is impossible for anyone (any rational agent) to deny; the question arises whether the undeniability or ineluctability of this proposition is a reason to consider it to be true. Does undeniability establish objective truth? Consider
Continue reading “Retortion and Non-Contradiction in Aristotle, Metaphysics, Gamma 3, 4“
Harry Binswanger asks: ". . . within the sphere not affected by human volition (the "metaphysically given") what are the grounds for asserting a difference between necessity and contingency? Aren't all the events that proceed in accordance with physical law in the same boat?"
This is large topic with several aspects. This post concentrates just one of them.