From the perspective of a realist philosophy of social science, the recent explosion of criticisms of mainstream economics, including reinvigorated Austrian criticism, provides what seems like a rich opportunity to join what are too often disjoined disciplinary interests and inquirers, and also to extend the arguments not only as regards the realist theory of social science, but also as regards the implications of this approach for economics. I begin with a minimum sketch of key features of realist philosophy of science (...) as I understand it. The central difference turns on the role and nature of explanation and of theory, between what is frequently termed ‘deductivism’, and on an alternative in which explanation requires the articulation of a causal mechanism, for example, the mechanism provided by molecular chemistry that gives us an understanding of oxidation. I take the position that in social science, explanation requires social causal mechanisms. I consider the Austrian contribution from this point of view and conclude with some hints regarding how the foregoing bears on our understanding of capitalism and socialism. (shrink)