If he could speak to us now, Johnson might remark that his 2019 obituary shows how times have changed — and not necessarily for the better.
One scenario involves a first human pair created from scratch — Adam and Eve, as many traditional religious believers would have it.
Their scrupulous work found that Jerry Coyne and others, in bullying Christians and Jews on how “we can dismiss a physical Adam and Eve with near scientific certainty,” were in reality poorly supported.
For the last forty years, population geneticists have repeatedly said that our population was never smaller than several thousand.
Could humanity have had its origin in a first pair, or did it have to come from a population of at least several thousand?