The overly simple, politically correct, hypothesis that all Native Americans came over the Beringian land bridge circa 12,000 BC is slowly being destroyed but its proponents aren’t giving up. The genetics and linguistics are showing that the populations are much more complex and older in this hemisphere. People were traveling over the seas much earlier than once thought and coming from every direction from Australia, Melanesia, Micronesia, Indonesia, Polynesia, Formosa, Japan, Siberia, Western Europe and West Africa.
"Why is it," he asked, "that we find remains of great sophisticated civilizations throughout Meso-America and rudimentary to almost none on the highway from the Beringian land bridge down the Pacific Coast Highway until we get to what is now Southern California where the Chumash lived and harvested leaking crude oil around what is now the Santa Barbara area to waterproof their baskets? Isn't the tendancy of civilizations to build first along the coasts where they first arrived and move inland later? Not the reverse?"