[CriticalCathed]

Studying behavior is not equivalent to studying, say, astrophysics.

It is of course "natural" in the same sense that everything is natural, but the lack of the ability to ground research in empirical evidence means that the fields of economics, social science, psychology, and especially evolutionary psychology etc. are not actually engaging in science.

The form, structure, tendencies, or beliefs of a human culture are not at all analoglous to say studying a distant and ancient star by observing its emission spectrum or investigating the nature of reality by investigating subatomic particle interactions. This fundamental difference means that these fields will never be as dependable as true science; to be clear that doesn't mean they're useless, only that they're not science.