... red, and so on. This, if accepted, has far-reaching consequences for the meaning of referring ex- pressions, for the logical structure of propositions, and for the theory of propositional ... an object, he must determine whether or not a conversationally relevant description is needed. However, the nature of the in- dividuating set, on the one hand, and constraints on choices of ... must be conversationally relevant. This is true both on formal and pragmatic grounds. From a formal standpoint, the description is conversationally rele- vant by default: no other functionally...