What have we learned from the studies of psychology, sociology, anthropology and education?
I was going to include social sciences in general, but I checked the Wikipedia article on the social sciences and it included several fields that I personally do not consider social sciences, like archaeology and geography. They also included some that I would agree are social sciences and which I would have to concede have made important contributions, like linguistics and economics.
So sticking to the ones that are in the question, what have they done for us? Is there even general agreement on basic principles?
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