Timothy Williamson and others have made a strong case for the claim that knowledge is the norm of assertion. Reasons to think that assertion has an epistemic norm also, interestingly, provide a reason to think that conversational implicature has a norm as well. This norm, it is argued, cannot be knowledge. In addition to highlighting an under-explored topic at the intersection of epistemology and linguistics, the discussion of conversational implicature puts dialectical pressure on the knowledge norm of assertion account. The (...) fact that knowledge is not the norm of conversational implicature forces one either to claim that there is one epistemic norm for the conveying of information and that it is not knowledge, or else to embrace a heterogeneous picture of communicative norms generally that undercuts some of the grounds for thinking that the norm of assertion should be presumed to be a simple norm as Williamson argues. (shrink)

Recent literature features an increased interest in the sufficiency claim involved in the knowledge norm of assertion. This paper looks at two prominent objections to KNA-Suff, due to Jessica Brown and Jennifer Lackey, and argues that they miss their target due to value-theoretic inaccuracies. It is argued that the intuitive need for more than knowledge in Brown’s high-stakes contexts does not come from the epistemic norm governing assertion, but from further norms stepping in and raising the bar, and Lackey’s purported (...) quality-driven case against KNA-Suff boils down to a quantitative objection. If that is the case, Lackey’s argument will be vulnerable to the same objections as Brown’s. (shrink)

A standard objection to the suggestion that the fundamental norm of assertion is the truth norm (i.e., one must not assert p unless p) is that this norm cannot explain why warrant requires knowledge-level evidence. In a recent paper, Whiting has defended the truth-first approach to the norms of assertion by appeal to a distinction between the warrant there is to assert and the warrant one has to assert. I shall argue that this latest defensive strategy is unsuccessful.

According to what Williamson labels ‘the C account of assertion’, there is one and only one rule that is constitutive of assertion. This rule, the so-called ‘C Rule’, states that one must assert p only if p has property C. This paper argues that the C account of assertion is incompatible with any live proposal for C in the literature.

The concept of implicature has its origin in the work of the late English philosopher H. P. Grice, though some proto-Gricean ideas can be traced back to classical times. Since its inception, the notion of conversational implicature has become one of the single most important pragmatic ideas in linguistics and the philosophy of language. It has spurred numerous new concepts such as explicature, the ‘pragmatically enriched said’, and impliciture in various neo- and post-Gricean enterprises. This chapter provides a critical overview (...) of the current state of play in implicature and its related concepts in linguistics and the philosophy of language. (shrink)

The knowledge norm of assertion is mainly in competition with a high probability or rational credibility norm. The argument for the knowledge norm that I offer turns on cases in which a hearer responds to a speaker's assertion by asserting another sentence that would lower the probability of the speaker's assertion, were its probability less than one. In cases like this, though with qualifications, is the hearer's contribution a challenge to the speaker's assertion or complementary to it? My answer is (...) the latter, and that only the knowledge norm yields that answer.The cases that I rely on follow from an elementary probability relation, though one that is inconsistent with the still influential relevance criterion for confirmation and evidence . Assume, for illustrative purposes, that p is in your belief corpus, as a consequence of your believing ∨ ∨ . 1 You learn that ∼ & ∼ , which would lessen the probability of p, were its probability less than one, 2 since it eliminates two rows of the truth-table in which p holds. What conclusion do you reach about p?Rather than withdrawing p, you acquire the belief that p & ∼ s & ∼ r, even though Formula where pr would be the subjective or epistemic probability of p on a probabilistic view of the knowledge norm before learning ∼ & ∼ . Instead of withdrawal …. (shrink)