Lackey, Jennfer. Acting on Knowledge
2010, Philosophical Perspectives 24 (1): 361-382.
Added by: Jie Gao
Summary: This paper argues that there are various kinds of cases in which a subject clearly knows that p, yet it is not epistemically appropriate for her to use the proposition that p in practical reasoning, to act as if p, or act on p. Knowledge is not, therefore, always sufficient for epistemically justifying practical rationality, unlike what says in the sufficiency condition of the knowledge norm of practical reasoning. In addition, it offers a diagnosis of what is salient in the above cases and suggests a broad feature that needs to be accounted for in any view of the norm governing practical rationality.
Comment: This is a nice paper arguing against the knowledge norm of practical reasoning, in particular the sufficiency condition. It is suitable for teaching on epistemic norms and pragmatic encroachement in a upper-level undergraduate course on epistemology.