I work on the prehistory of Japan and I am surprised to read this: the oldest lithic technology in Japan is around the date that you mention but a similar and even older technology is found around the Baikal lake, for this reason some people have proposed in the past that the first Japanese settlers were people coming from the North of the Himalayas. Can you send the references that you used? Of course your point still stand, independently of whether that technology starts in Japan or not. Nice post!
I work on the prehistory of Japan and I am surprised to read this: the oldest lithic technology in Japan is around the date that you mention but a similar and even older technology is found around the Baikal lake, for this reason some people have proposed in the past that the first Japanese settlers were people coming from the North of the Himalayas. Can you send the references that you used? Of course your point still stand, independently of whether that technology starts in Japan or not. Nice post!