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Frans de Waal, Who Apes Whom? - The New York Times
De Waal suggests that a great deal of interbreeding may have been going on back in australopithecine days, so Homo naledi (and other dawn peoples) might be more like the cross-product of a dog and a wolf, and less like a stage on the way to Homo sapiens.
from Stowe Boyd http://stoweboyd.com/post/129142916132