Telling
This chapter sets out an account of assertion—or telling—which is suitable for a unified account of trustworthiness in both speech and action, and which centrally involves commitment. On this picture, assertion involves simultaneously promising to speak truthfully on a given matter, and either keeping or breaking that promise. The promise is to utter the truth, not merely to be sincere or do one’s best to utter the truth. This account shows how assertion and promising are importantly similar, without implausibly identifying asserting that p with promising that p. The account is distinguished from the so-called ‘commitment account’ of assertion and also from the ‘assurance’ account of the epistemic significance of testimony, though it is compatible with such accounts. Finally, the chapter draws on chapter 2’s discussions of norms on promising, to explore possible norms of assertion; there is also discussion of the constitutive (or not) nature of such norms.