Corroboration and the Problem of Content-Comparison

Abstract

I will confine this reply to arguments that hit, or at least are aimed at, the position defended in my position paper. This means that I will concentrate mainly on the papers of Feyerabend, Hübner, and Grünbaum. Grünbaum’s paper I regard as the most serious challenge in the present volume to the Popperian position. He criticises, among other things, an assumption, concerning the possibility of content-comparisons between rival theories, which is central to our position. I think that his criticism can be met. But in the meanwhile a more deadly objection to this assumption has been made by Miller, and the last part of my reply will be concerned with this crucial issue.