I expect that we will eventually understand that modern humanity emerged 200,000 years ago likely after some nifty genetic intervention. Putting that aside though we know one other thing. Mankind used mind to mind communication until 45,000 years ago. This meant that he migrated into every corner of the globe easily and unchallenged quickly while subsisting from hunting and gathering.
The bushmen and the Australian aboriginals are excellent examples of the life way and of its natural integrity. These guys used canoes as well.
Once that base population was laid down, new more successful genetic advantages simply traveled through local intermarriage and became globalized inside of two thousand years. Thus we have note of an out of Africa movement from 60,000 years ago. The genes moved but the folks not necessarily so. Recall everyone depended on extensive local biological knowledge to survive. That did not move so well before the advent of agriculture.