@edgarblythe,
I read about all the different groups in the Middle East, Hittites, Assyrians, Sumerians, Egyptians etc, all sorts of different tribes.
They all looked different and would dress and style their hair to accentuate those differences. It was so they could tell if the person coming down the path was friend or foe.
It's hard wired, back then it made sense, now it gets in the way.