Kuhn, Putnam and the Reference

In some of his writings, Kuhn criticized Putnam’s causal theory of reference for natural kind terms put forward in his classic paper “The Meaning of ‘Meaning’” claiming that Putnam’s theory cannot explain the reference changes of natural kind terms. After looking into Kuhn’s objections to Putnam’s reference theory, some of the main features of Kuhn’s incommensurability thesis and some traits of Putnam’s later version of his theory, we will argue, on the one hand, that Putnam’s later reference theory contains some components that enhance the explanation of the reference change of natural kind terms, and on the other hand, that Kuhn’s and Putnam’s views on reference do no differ that much, especially in virtue ofcertain similarities between Kuhn’s incommensurability thesis and Putnam’s thesis of conceptual relativity.