David Reich, Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past, Knopf Doubleday Publishing Group, 2018, p.146
“The best estimates are that it takes a minimum of fifty thousand years for an adaptation to show up in the human genome. This is called evolutionary lag… Our hunter-gatherer ancestors had a very different lifestyle…”
This is Your Brain on Music (2006)
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