@futurebird @nazokiyoubinbou @michael_w_busch if the calories do turn out to be a major factor for filtering out most of the "Neanderthal features" in our DNA¹, then aren't we basically describing the 80/20 but applied to evolution?
¹as @michael_w_busch pointed out: Neanderthals and sapiens sapiens interbred. So arguably the discussion should be framed as which genetic features were selected for within the hominid lineage, rather than as two truly different species of which one went extinct.