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Noting that “race science requires evidence from the past to elevate race as a biological concept,” she urged anthropologists to depict gene flow over time in ways that don’t emphasize branches as endpoints—perhaps, instead, as a braided stream with channels intersecting at some times, diverging at others.

When daylight finally broke Sunday, after two straight days of heavy rain, the road itself looked like a braided stream.

Today, human evolution looks less like Darwin's tree and more like a muddy, braided stream.

Berger himself thinks the right metaphor for human evolution, instead of a tree branching from a single root, is a braided stream: a river that divides into channels, only to merge again downstream.

On swiftly paced tracks such as June the 15, 1967, their rapid notes become a braided stream of bright sound.