Here is the full report: www.hepi.ac.uk/wp-content/u...

Doesn't this look like "purity" in modern terms?

Why don't geneticists frame people's differences in relative terms - that some individuals have less diverse (most likely recent) ancestry than others? Imagine a journalist reading this in the abstract: "...10,000 single-origin individuals from 35 worldwide populations..."?

Some scientists also think that historians do not know enough about the science to write about its history, which of course is not the case for good historians. Same for philosophers.

For an individual on average, or the average individual perhaps, but not for any two specific individuals. It is one thing to made a mathematical calculation and another to make sense of it.

Indeed.

My point was that I do not think we can make any legitimate inferences for individuals. Anyway, this may be of interest: plato.stanford.edu/entries/heri...