I don't think this is true. "copulation normally conducted in privacy" is a human universal http://joelvelasco.net/teaching/2890/brownlisthumanuniversals.pdf ht

I don't think this is true. "copulation normally conducted in privacy" is a human universal http://joelvelasco.net/teaching/2890/brownlisthumanuniversals.pdf http://joelvelasco.net/teaching/2890/brownlisthumanuniversal...