Abstract
Knowledge excludes luck. According to the received view, this intuition reveals that knowing is essentially modal in character. This paper demurs. Either knowledge does not exclude luck, or the entailment reveals nothing about its conceptual character. It is argued that knowledge excludes accidentality, and that this notion is not modal but causal‐explanatory. There are three central tasks. The first is to explicate the concept of accident. The second is to argue that the concepts of luck and accident are “intensionally distinct,” which is to say that no member of the intension of either holds on both. The third is to argue that an anti‐accident requirement on knowledge is preferable to an anti‐luck analogue on abductive grounds.