The cases of Norman the Clairvoyant and Mr. Truetemp form classic counterexamples to the process reliabilist's claim that reliability is sufficient for prima facie justification. I discuss several ways in which contemporary reliabilists have tried to deal with these counterexamples, and argue that they are all unsuccessful. Instead, I propose that the most promising route lies with an appeal to a specific kind of higher-order defeat that is best cashed out in terms of properly functioning monitoring mechanisms.

According to Greco’s early explanatory salience contextualism, _S_ knows that _p_ if and only if _S_’s cognitive abilities are the salient factor in a causal explanation of why _S_ holds a true belief rather than a false belief or no belief at all. Greco abandoned this view because it cannot handle fake barn cases and because it proves impossible to analyze knowledge in terms of a quantitative characterization of explanatory salience. The paper argues that the core idea of explanatory salience (...) contextualism could have been saved if only the causal notion of explanation had been replaced by an abductive notion. (shrink)