 The metasemantic interpretation of the 2D framework was originally developed as a way of explaining how the propositions conveyed by the assertion of a sentence can vary depending on the conversational context (Stalnaker 1978). In this seminal paper, Stalnaker proposes an attractive theoretical account of the role of assertion in a conversation, which is then used to explain how the assertoric use of a necessary sentence like ‘Hesperus = Phosphorus’, can convey a specific empirical proposition within a given conversation. In particular, Stalnaker argues that our commitment to construing such sentences as making felicitous and informative assertions will lead us to reinterpret their content in ways that can be modeled using the 2D framework.