My Choctaw grandmother would always dispute the land-bridge idea. “We’re not Chinamen!” she’d say.
This article is interesting in that it discusses a different and inventive response to the environment. I’s not surprising that this happens and, of course, people were far more widely dispersed in prehistory than academics maintained.
Another good post by Sunken Civ.
Your grandmother was funny.
I think we give the credit we should to the ability of stone age people to be mobile. The Polynesians an essentially stone age technology society conquered the Pacific. I would not be surprised to find that the Solutrean hypothesis (some settlement from late Ice Age Europe) does have merit. Though right now the current thinking is against. I guess the biggest problem for it is lack of European flavor DNA.
I've seen that before, the "we've always been here" idea. I won't be surprised if earlier ancestors' fossils show up in New World contexts, just as they're showing up in various nooks and crannies around the world. When the continental shelf is more systematically explored, it will also be no surprise when the remmants of humans settlements are found, even extensive ones, even towns, cities, and seaports.