Does Compositionality Entail Complexity?

Propositions are (generally taken to be) the semantic values of declarative sentences in context. There is a long history of thinking that an important reason for taking propositions to be structured stems from the fact that the semantic values of such sentences are (typically) compositionally determined. In this paper, I argue that compositionality does not entail, nor provide good evidence for, the claim that propositions are structured. I go on to argue that there is no additional feature of declarative sentences—for example, that they are true or false—that, in conjunction with compositionality, entails or provides good evidence for the claim that the semantic values of those sentences are complex.