Notice the fates of Neanderthals and Sapiens seem intertwined before the Cro-Magnons exterminated them 40,000 years ago. If we speak of only what is known in terms of DNA sequencing, how much evidence is there for Homo Sapiens being a light brand clone split off from the Neanderthals and then genetically engineered to become a Neanderthal-killing machine? A lot, as a matter of fact. If the conclusion weren't so incredible some scientists might describe it as obvious. This would explain so many things at once that it would all become clear. The problem is ... scientists are not permitted to reach that conclusion.
P.S. Speaker explains why the giants, the "melonheads" were always the ruling elites, with different breeds of Neanderthals in the middle as the enforcers and guards and the "little people" on the bottom as always. Plenty of variations in all three types of people worldwide but always the same three basic races of men ... melonheads, 'thals, slaves. The true 'thal type is never found in royal garb or in the center of the mound or adorned with the raiments of kings. Always the melon/giants.
P.P.S. Smithsonian excavated. Melons removed with all artifacts. Never heard of or seen ever again, never appears in photos, no further mention whatsoever. Like it never happened.