Abstract

Source views claim that an agent’s moral responsibility for an action is not explained by the availability to her of alternative possibilities, but rather by her being the actual source of her action in a specific way. This chapter set’s out my Frankfurt-case argument for the source view, and defend it against David Widerker’s concern that the agent in the Frankfurt case is only derivatively morally responsible, and against Carl Ginet’s objection that relative to exactly what this agent is morally responsible for, he will have an alternative possibility. I also present a theory of the robustness of an alternative possibility, that is, what it would be for an alternative possibility to explain an agent’s moral responsibility for an action.