The critical realist intervention is helpful because it goes some way towards suggesting why retroductive reasoning is central to how we should think about social science explanation. Nevertheless, there are two qualifications we need to make. First … the critical realist position … restricts the scope of contingency to the multiple interactive possibilities among the plurality of generative mechanisms, which in turn points to a residual positivism. In our account, however, contingency ‘goes all the way down‘ so to speak. It is not just the complexity of the interactions between various mechanisms that concerns us, but the intrinsic contingency of the mechanistic structures themselves. Second … (Bhaskar’s argument moving from positivism to post-positivism is basically confused) 33.