The most basic philosophical account of communication takes sentences (in context) to express propositions. On this account, the propositional content of a sentence explains what information it conveys. I will argue that propositional content, if understood as representational, fails in one of its most basic tasks: explaining when two sentences are incompatible, in particular when those sentences involve anaphoric uses of pronouns. I will explore what options are left for modeling the conversational contribution of pronouns.