Published online by Cambridge University Press: 01 January 2022
The causal theory of reference is often taken to provide a solution to the problems, such as incomparability and referential discontinuity, that the meaning-change thesis raised. I show that Kuhn successfully questioned the causal theory and Putnam's idea that reference is determined via the sameness relation of essences that holds between a sample and other members of a kind in all possible worlds. Putnam's single ‘essential’ properties may be necessary but not sufficient to determine membership in a kind category. Kuhn argued that extension is fixed by similarity-dissimilarity relations that are liable to change in taxonomic reorganizations of science.
This article has been under work for an unusually long time. While not all were, some of the reasons that prolonged the process were beyond my control. I wish to warmly thank all those who have kindly offered their comments on different versions of this paper or otherwise helped to improve the content over the years. I have especially the following persons in my mind: Alexander Bird, John Henry, Ranjan Chaudhuri, James W. McAllister, and a number of anonymous referees.