Why would they assume that #human activity, even in the #Americas, was Homo Sapiens that far back? 130K years ago, that could easily be some other species of humans, like #Denisovans.

Why would they assume that #human activity, even in the #Americas, was Homo Sapiens that far back? 130K years ago, that could easily be some other species of humans, like #Denisovans.