  For Weber, the commitment to methodological individualism is very closely related to the commitment to verstehende (or interpretive) patterns of explanation in sociology. The reason for privileging individual action in sociological explanation is that only action is “subjectively understandable.” Weber reserves the term “action” to refer to the subset of human behavior that is motivated by linguistically formulated or “meaningful” mental states. (Generally speaking: coughing is behavior, apologizing afterwards is action.) Updating the terminology somewhat, we can say that the defining characteristic of an action is that it is motivated by a mental state with propositional content, i.e., an intentional state. The importance of action for Weber is that we have interpretive access to it, by virtue of our capacity to understand the agent’s underlying motive. This permits the social scientist to “accomplish something which is never attainable in the natural sciences, namely the subjective understanding of the action of the component individuals” (Weber 1922, 15). Action-theoretic explanation is central to social-scientific analysis, therefore, because without knowing why people do what they do, we do not really understand why any of the more large-scale phenomena with which they are embroiled occur.