Since the late 1980s the dominant theory of human origins has been that a 'cognitive revolution' (C.50,000 years ago) led to the advent of our species, Homo sapiens. As a result of this revolution our species spread and eventually replaced all existing archaic Homo species, ultimately leading to the superiority of modern humans. Or so we thought. As Clive Finlayson explains, the latest advances in genetics prove that there was significant...