On Origins - some video

The following website has a fairly detailed rendering of how humankind actually went about colonizing the earth. I watched the three minute video that tracks the migration of human beings from the 'cradle of civilization' - sub Saharan Eastern Africa from about 165,000 years ago. I remember thinking that a lot of this has been pieced together based on fossil evidence whose bedrock relies on the fact that there is no older fossil of a human being on the earth other than the one found in sub-Saharan Africa.
What if in the future someone discovers an even older fossil of a human at some other location - we would then have to reconsider and revamp the entire migration theory that humans emerged from Africa. The evidence that this whole thing rests on is pretty flimsy but nonetheless it is definitely a valid theory with fossil proof and we have to accept it for now…
I also noticed that the region where I am from (Southern India) was populated roughly 90,000 years ago. If you have the time, you should also check out the actual website of Bradshaw Foundation - they have some very commendable articles on human evolution.