The Neanderthals who started World War I And this is where we get to the Neanderthals.
It would just be another small step towards the utopian view. The Role of Recent Admixture in Forming the Contemporary West Eurasian Genomic Landscape.
The more detailed the ancestral analysis is, the more fractions we would have and the further back in time we can go. This is a very problematic and dangerous assumption.
The parents of the following individual: 30% Irish, 20% Jewish, 50% African could have bene produced by any other combination, such as: (60% Irish 40% African) who married (40% Jewish and 60% African) or any other combination.
Previous attempts showed that such attempts would be highly speculatives.
GPS Origins model is the most advanced model in providing two dates, instead of one, but it still far from being able to date all your ancestors.