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Recent literature features an increased interest in the sufficiency claim involved in the knowledge norm of assertion (KNA-Suff). 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 (i) 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 (ii) 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.

DOI: 10.1007/s11229-015-0914-y

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