I don't think Sokal is an example of systems of systems thinking. (The post-modernist label is not a particularly useful one; here it means the level after the modernist level, and is only partly connected to other things called post-modernist.)

Why would a high-IQ person have trouble emulating someone of the opposite sex? (There doesn't appear to be the same asymmetry--both men and women seem bad at modeling each other--but hopefully this will point out the sort of features that might be relevant.)