[Theoria]

The 'kelp highway' theory has been around for sometime.

[rktman]

Thanks for this. BRING BACK PANGEA! Good thing piles of money can fix what humans have done eh?

[Tallguy]

Definitely makes sense that seafaring people could have whipped down the Pacific coast of North America very, very rapidly using the small islands as secure settlements for fishing & re-fitting. Heck they could have gotten clear down to Tierra del Fuego.

[Red Badger]

I think people migrated here from Asia, Europe and Polynesia via many different routes, north, south, east and west.

As for the arrowheads, form follows function, and always has.........................