Abstract

This chapter takes up the knowledge norm of assertion, according to which assertion is governed by the constitutive norm that one may assert only what one knows. The relationship between such norms and contextualism is controversial—some philosophers have argued that there is a special problem for this combination of views, and others have argued that the knowledge norm provides direct support for contextualism. This chapter rejects both kinds of simple connections. The book's relevant alternatives approach to knowledge, however, combined with Stalnakerian approaches to assertions and conversational contexts, is suggestive of an underexplored interpretation of the knowledge norm—the _incremental_ knowledge norm of assertion, according to which what is required for proper assertion depends on its incremental conversational effect.