I thought about not answering this but I have to. This is the same sort of thinking that says we were cannibals, we killed our babies, we didn't know how pro-creation happened, our brains are such that we can't 'get' abstract thought, etc. etc.. If we came from Africa we would be negroid i.e. looking more like Afro-Americans wouldn't we? Yet we are caucassian. It's yet another way of dispossessing us. It's got no logical reasoning or scientific evidence. Although, it is said, that all humanity comes from Africa - that it was the original garden of Eden. Then again, there are still many who say the Earth is flat!