In Causation and Responsibility, Michael Moore offers an integrated conception of the law, morality, and metaphysics, centered on the notion of causation. I contest Moore's claim that causation cannot relate absences and show how accepting absence causation would improve Moore's view. For denying absence causation drives Moore to a disjunctive account of legal and moral responsibility in order to handle cases such as negligence. It forces him into denying that beheading someone can cause them to die, since the route from beheading to death involves the absence of blood flow to the brain. And it leads him into allowing that responsibility can arise from mere correlation with a crime, given that counterfactual dependence can still hold between correlates.

In Michael Moore's important book Causation and Responsibility, he holds that causal contribution matters to responsibility independently of its relevance to action. We are responsible for our actions, according to Moore, because where there is action, we typically also find the kind of causal contribution that is crucial for responsibility. But it is causation, and not action, that bears the normative weight. This paper assesses this claim and argues that Moore's reasons for it are unconvincing. It is suggested that sometimes a person's responsibility for that to which he causally contributes depends on his recognition of an identity between himself and the protagonist of the event for which he is held responsible. Since this fact about identity is not captured by causal contribution, action matters to responsibility for reasons that are not exhausted by the fact that action involves causal contribution. The relevance of this idea for accomplice liability is also briefly discussed.

Michael Moore and I agree about the moral importance of how our actions turn out. We even agree about some of the arguments that establish that moral importance. In Causation and Responsibility, however, Moore foregrounds one argument that I do not find persuasive or even helpful. In fact I doubt whether it even qualifies as an argument. He calls it the “experiential argument.” In this comment I attempt to analyze Moore's “experiential argument” in some detail and thereby to bring out why it does not help. In the process I raise some problems about the rationality of the emotions, which may be where Moore and I part company. We both believe that emotions should be taken more seriously by moral philosophy. But apparently we have radically different views about what this means.

In this paper I critically examine Michael Moore's views about responsibility in overdetermination cases. Moore argues for an asymmetrical view concerning actions and omissions: whereas our actions can make us responsible in overdetermination cases, our omissions cannot. Moore argues for this view on the basis of a causal claim: actions can be causes but omissions cannot. I suggest that we should reject Moore's views about responsibility and overdetermination. I argue, in particular, that our omissions (just like our actions) can make us responsible in overdetermination cases. I go on to provide an account of how this may be possible.

In this reply, I seek to summarize fairly the criticisms advanced by each of my four critics, Jonathan Schaffer, Gideon Yaffe, John Gardner, and Carolina Sartorio. That there is so little overlap either in the aspects of the book on which they focus or in the arguments they advance about those issues has forced me to reply to each of them separately. Schaffer focuses much of his criticisms on my view that absences cannot serve as causal relata and argues that this commits me to the view that double preventions (such as beheadings) cannot be causal of events such as deaths. I deny that double preventions such as beheadings are not causal, while admitting that other double preventions are not causal but denying that this latter conclusion is unwelcome in its implications. Yaffe criticizes my view that a person substantially causing some harm H is sufficient for that person having performed the activity of H-ing, whereas I affirm that causing H is sufficient for doing the action of H-ing even if it is not sufficient for intentionally H-ing (Yaffe's definition of “activity”). Gardner takes issue with my “experiential argument” for the relevance of causation to moral blame; he urges that we cannot infer that we are more guilty (when we cause a harm than when we don't) from either the psychological fact that we feel more guilty or from the moral fact that it is virtuous to feel such heightened guilt, because it is viciously circular: we feel such guilt only because we have already judged that we are more guilty, and it is virtuous to feel such guilt only because we in fact are more guilty. I deny such circularity exists. Sartorio takes issue with my thesis that in omissive overdetermination cases (where each omission is sufficient to fail to prevent some harm, meaning neither is necessary) neither omitter is morally responsible for the harm. I trade intuitions with Sartorio about a range of related cases that we each think bears on the issue.