The behavior of Cave men (Neanderthals and beyond) was not subject to any superior comparison. But today, while eminent examples of advanced and highly sophisticated societies abound, there are vast numbers of East Indians who routinely shit in the streets of their towns.Dude, seriously? We aren't talking about cave men here.
https://www.quora.com/Do-Indian-people-really-defecate-in-streets
My wife and I visited Tamil Nadu, and spent a great deal of time in Chennai (formerly Madras) and yes, the people crap in the streets all of the time. Sanitation ain't a strong point. Even modern buildings have poor plumbing so we stayed in the Leela Palace Chennai because it had its own sewage treatment plant so we could flush the toilets normally. The third world sucks.