 Finally, we should note that questions have been raised about the legitimacy of the kind—or perhaps more precisely, the category—“artifact” itself. We have already touched on this in  Section 1  above, in the context of the definitional issues raised by the continuum problem. This discussion clearly reflects Reydon’s epistemological turn in that it foregrounds methodological considerations and lets the ontological chips fall where they may. We will discuss methodological issues in  Section 3.