To misquote a certain cat, "We're all a little dumbass around here".
My comment wasn't reflecting the entrenched dogma in science, which does happen, although not as often as some insinuate. My comment was more about how long this particular entrenched dogma held on - for generations! Longtime friends have had to listen to me gripe about this land bridge nonsense for decades! I cannot even tell you why, I just never believed it was valid.
Possibly because a "landbridge" as described is counter-intuitive? In order for the water to recede, it had to get colder and lock the water in glacial ice...BLOCKING any supposed route? Makes far more sense to skirt the coastal edge of the glacier in boats...both Pacific *and* Atlantic. That would help explain Solutrean tools found here as well, and the only plausible explanation for the coastal Peruvian cave find.
New find that may further shape our anthropological history. In short it seems in this instance that "modern human" hands and particularly feet and legs, preceded the enlarged brain. In other words, this early Homo walked upright before it had the expanded capacity to think.
Found deep in a cave in South Africa, in a situation that makes dating difficult. The researchers are still puzzling over where this species fits in the order of succession.