We've been telling them here at FR for years now that the earliest migrants came by sea probably before or during the last Ice Age. If I was in a freezing cold boat of some kind I'd want to put ashore wherever I could to build a fire, whip up some Pleistocene equivalent of cioppino or oysters Rockefeller and rest for the next stage of the trip south to the warm country.
The oldest human remains in California, maybe in North America, were found just a few miles from where I live in the Channel Islands. Arlington Springs Woman So was a pygmy mammoth (which seems to excite researchers much more than the significant human remains!)
Working on that assumption it might be wise (to paraphrase Sam Kinnison) to Go Where the Artifacts Are!
I've often wondered if they knew going south would lead to warm weather.
"The oldest human remains in California, maybe in North America, were found just a few miles from where I live in the Channel Islands. Arlington Springs Woman."
Arlington Springs Woman is the oldest skeleton ever found in the Americas. Previous to this accurate dating Luzia (Brazil) was the oldest.
"So was a pygmy mammoth (which seems to excite researchers much more than the significant human remains!)"
Some believe those pygmy mammoth bones had been cooked.