This model proposes that humans migrated from Africa only about 100,000 to 200,000 years ago.
For one thing, the supposed initial phase of human evolution is represented by the ape-like Australopithecus, which overlaps significantly in time with H. erectus. If they coexisted, how could one have been the evolutionary predecessor of the other? Even worse is the problem it presents for the current out-of-Africa model. This model proposes that humans migrated from Africa only about 100,000 to 200,000 years ago. But if that is the case, then how could they have existed on remote southeast Asian islands two million years before that?