Before I disappear into the footnotes, it might help if I tell you how this started. Five years ago I had the philosophical equivalent of what recovering alcoholics call ‘a moment of clarity’. I was in a large, crowded lecture hall in London, listening to a talk given by a high-flying Oxford theologian, and I did something I almost never manage to do. During the question and answer session that followed his talk, I got in an absolutely killer objection. A philosopher behind me swore happily when he heard it. Another sitting next to me smiled, leaned over and whispered, ‘You’ve got him! You’ve got him in a regress!’ Indeed I had.
I won the argument that night, plainly, and to come to the point, it made no difference at all. The speaker didn’t change his mind. He took more questions and just got on with promoting his view. It occurred to me then that maybe arguments aren’t actually very persuasive. Even really good ones. That’s what came to me in my moment of clarity.