Thanks for the research, Tom
The magic date of Pre-5000 BC is a useful one. It makes all this stuff pre-historic and thus likely a detail of the dispersion process, rather than syn-historic.
Space/Science » in reply to I did a little research...
The magic date of Pre-5000 BC is a useful one. It makes all this stuff pre-historic and thus likely a detail of the dispersion process, rather than syn-historic.