Stephen Kearns

In this paper, we argue for a particular informative and unified analysis of normative reasons. According to this analysis, a fact F is a reason to act in a certain way just in case it is evidence that one ought to act in that way. Similarly, F is a reason to believe a certain proposition just in case it is evidence for the truth of this proposition. Putting the relatively uncontroversial claim about reasons for belief to one side, we present several arguments in favor of our analysis of reasons for action. We then turn to consider a series of objections to the analysis. We conclude that there are good reasons to accept the analysis and that the objections do not succeed.

The paper challenges Williamson’s safety based explanation for why we cannot know the cut-off point of vague expressions. We assume throughout (most of) the paper that Williamson is correct in saying that vague expressions have sharp cut-off points, but we argue that Williamson’s explanation for why we do not and cannot know these cut-off points is unsatisfactory. In sect 2 we present Williamson's position in some detail. In particular, we note that Williamson's explanation relies on taking a particular safety principle ('Meta-linguistic belief safety' or 'MBS') as a necessary condition on knowledge. In section 3, we show that even if MBS were a necessary condition on knowledge, that would not be sufficient to show that we cannot know the cut-off points of vague expressions. In section 4, we present our main case against Williamson's explanation: we argue that MBS is not a necessary condition on knowledge, by presenting a series of cases where one's belief violates MBS but nevertheless constitutes knowledge. In section 5, we present and respond to an objection to our view. And in section 6, we briefly discuss the possible directions a theory of vagueness can take, if our objection to Williamson's theory is taken on board.

Situations are powerful: the evidence from experimental social psychology suggests that agents are hugely influenced by the situations they find themselves in, often without their knowing it. In our paper, we evaluate how situational factors affect our reasons-responsiveness, as conceived of by John Fischer and Mark Ravizza, and, through this, how they also affect moral responsibility. We argue that the situationist experiments suggest that situational factors impair, among other things, our moderate reasons-responsiveness, which is plausibly required for moral responsibility. However, even though we argue that situational factors lower the degree of our reasons-responsiveness, we propose that agents remain moderately reasons-responsive to the degree required for moral responsibility. Nonetheless, those affected by situational factors are arguably less morally responsible than those who are not subject to similar situational factors. We further evaluate an understanding of reasons-responsiveness which relativizes reasons-responsiveness to agents’ circumstances. We argue that the situationist data do not warrant this kind of divergence from Fischer’s and Ravizza’s account. We conclude by discussing what situationist experiments tell us about our relationship to non-reasons.

This paper is a response to two sets of published criticisms of the 'Reasons as Evidence’ thesis concerning normative reasons, proposed and defended in earlier papers. According to this thesis, a fact is a normative reason for an agent to Φ just in case this fact is evidence that this agent ought to Φ. John Broome and John Brunero have presented a number of challenging criticisms of this thesis which focus, for the most part, on problems that it appears to confront when it comes to the topic of the weighing of reasons. Our paper responds to all of the criticisms that these critics have provided, shedding fresh light on this interesting topic in the process