The braided estuary of human evolution

Metaphors matter because they evoke images, and images are often one of the best ways to understand something in a deep fashion. Consider Charles Darwin’s musing:
“It is interesting to contemplate a tangled bank…”
He brought something memorable and familiar to make evocative the dynamics at play in his novel theory of evolutionary change through natural selection, writes Razib Khan.

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Also read an article on human evolution in volume 16.2 here