Abstract

Donald Davidson is famous for, among other things, his theory of radical interpretation – an account of how it is that we can attribute meanings to people's words, and contents to their mental states, based on an apparent paucity of evidence. This account is infused with ideas from, and applications of, the general theory of measurement, as well as one specific instance of that theory – decision theory. In addition, however, Davidson also applies measurement theory – in the form of his “measurement theoretic analogy” – from outside the theory of radical interpretation, to yield a novel account of one of its notable features: the indeterminacy of interpretation. I argue that the success of this application is limited, however, in dispelling a worry to which indeterminacy gives rise – namely that if Davidson's account of indeterminacy is correct, we have no mental states.