The paper builds upon familiar arguments against identifying the proposition that Brutus stabbed Caesar with a given sequence containing Brutus, Caesar, and the stabs relation. It identifies a further problem, one that affects not only traditional Russellian accounts of propositions, but also the recent act-theoretic approach championed by Scott Soames and Peter Hanks. The problem is that there is no clear content to the idea that the pair  < Brutus, Caesar> instantiates the stabs relation. It is argued that this further problem presents a decisive objection to the act-theoretic approach to propositions.

In ‘Kripke on epistemic and metaphysical possibility: two routes to the necessary a posteriori’, Scott Soames identifies two arguments for the existence of necessary a posteriori truths in Naming and Necessity (NN). He argues that Kripke’s second argument relies on either of two principles, each of which leads to contradiction. He also claims that it has led to ‘two-dimensionalist’ approaches to the necessary a posteriori which are fundamentally at odds with the insights about meaning and modality expressed in NN. I argue that the alleged second argument is not in NN. I identify the mistakes that lead to Soames’ misinterpretation.