It's also apparently used in the social sciences, but as you said this is not the primary application. If it can in fact be applied here it's still not going to give you a definitive answer, nothing can when studying society and behavior. Even if it's not strictly applicable here it's generality should allow it to provide a framework within which to look at this problem which has to be better than the blanket, "correlation does not equal causality" line. It was just a thought.







