Abstract

I WOULD LIKE TO respond to the four commentaries in turn. In each case I have started by setting out what I think the commentaries are claiming; in doing so, I may reveal that I have misunderstood or misconstrued, and I apologize where this is the case. My responses in many cases are provisional: the commentaries have given me much to think about. Also, my responses are selective—there are many points not touched upon here that deserve consideration. Finally, the order of my responses is arbitrary.