Would you say there exists a correct biological viewpoint? Yes? Well, social sciences are no different. It's just that social issues are heavily public, and that makes correct scientific application amazingly difficult, as well as consequences are not immediately apparent as they are with a few other sciences.

You would not suggest that there is no thigh bone in the human body because all we have to do is cut open the thigh (or just look in an anatomy textbook endorsed by the entire biological community) and you'll see your mistake. However, it is easy to suggest that something like say 'trickle down economics' is a good economic policy. It's not, it's terrible actually, but because humans are so good at being irrational when consequences are not apparent and not immediate we're economically irrational, despite the fact that there exists correct economics just like there exists correct anatomy.