Conflicting Evidence
An opposing study claims that people had actually arrived in North America as long as 130,000 years ago after the bones of a mastodon suggested the animal had been butchered by man-made weapons. But Potter doesn’t want to get into that argument. “I am super skeptical about that,” says Potter. “Early modern humans aren’t even out of Africa at that point.” Can you imagine the history we would have lost if Potter had given up on the case?