Abstract
Drawing on parallels in Hutcheson and Hume, I raise two worries about Bratman’s theory of shared agency. First, has Bratman captured the interpersonal character of shared agency? Second, has he captured its practical character? By “its practical character,” I mean the sense in which shared agency is something we can undertake under that description, and not just a condition we might happen to find ourselves in? I argue that Bratman’s theory falls short of answering this second worry. The source of the shortcoming, I argue, is a fundamental methodological commitment that structures his action theory as a whole. This is the commitment to regard the concepts of action and shared action as empirical concepts, rather than as practical concepts