Where the Neolithic Revolution stalled

Lia Betti et al. on Europe 6100 - 4500 BC: "Climate shaped how Neolithic farmers and European hunter-gatherers interacted after a major slowdown from 6,100 BCE to 4,500 BCE". Before "the Sons of Aryas" or, for that matter, of anyone shaping their beakers in the bell shape. DOI 10.1038/s41562-020-0897-7.

Razib runs a victory lap. He adds that social factors likely applied as well, thinking of how various internal Arab strifes bogged down the effort to conquer Constantinople, until 715 AD when it was too late. For whatever reason, the Bell Beakers would be more internally united.

I wonder to what extent the Neolithic farmers ever penetrated Aquitaine. I understand that the J mitochondrion is absent from modern Euskara. By contrast Euskara men have a lot of (my) R1b, hinting that my IndoEuropean bros did much better there. Although - for the Basques - not budging the language.