Abstract

I am very grateful to both Edward Erwin and Peter Fonagy for their thoughtful and engaging comments. I do not have space to deal fully with all the issues they raise, but I will try to clarify some key points at which perhaps I implied more than I intended, or failed to be clear. Erwin states that I claim the following principle is a method for inferring causes: “if X is causally relevant to the occurrence of Y, then the incidence of Ys in the class of Xs and Ys will be different compared with the incidence of Ys in the class of non-Xs and Ys” (Erwin 2012, 217). This is not so. The method I attribute to Grünbaum is given in what follows the principle in the quotation given on p. 199, namely, “To validate a ..