I heard someone from the UN say it was tribes, all people come from differing tribes. you have smart tribes, dumb tribes, violent tribes, peacful tribes, retarded tribes=the no cure cancer crowd, the stupid death and murdering tribes=the chemo theraphy crowd of dope peddlers, and then you have advanced tribes, geniuses who build internets, solar power, etc. It is all so individual but the tribal part seems constant, some tribes eat lots of meat, other tribes are semi vegan or live off the land as fruitarians, like islanders do. Where the differing tribes came from, originated, is anyones guess.
I personally think there is one little man behind a curtain and a stage like in the Wizard of Oz, and he is playing a big joke on all of us. I think his name is Basil and he lives in Switzerland and runs the imf, international monetary fund and bank of international settlements.
have a good day.