Lee Olsen Wrote:
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> Nature paper free online:
> [www.nature.com]

No back-up independent verification?
"We also attempted to identify ancient human DNA (Homo sp.) from all layers. Our analyses focused on strata with longer occupational con-texts (strata 1204, 1210, 1212 and 1218), for which additional extraction, libraries and sequencing efforts were performed (Supplementary Infor-mation 1.10, Supplementary Data). However, we found no evidence of ancient human DNA within the samples. This does not negate a human presence at Chiquihuite Cave, as the probability of detecting ancient human DNA from cave sediments has previously been shown to be low 33."

So "low" the pre-Clovis pseudo-scientists can't find one solitary pre-Clovis human tooth, human hair, or unequivocal skull from a modern controlled dig anywhere in the Americas, let alone Mexico. That's in spite of 50+ equivocal claims just like this one we've seen in the past. We have these dates but never any independent back-up verification for them.
So "low" that all of the 30,000-year-old claims have artifacts that look like monkeys made them.
So "low" and so far away from the coast these workers won't be able to claim a Robinson Crusoe shipwrecked and left them in the cave.