The quotes in here suggest that no one has ever demonstrated that cultural variants are shaped by natural selection. Odd, considering that many of the folks I know have been doing just that since the late 1970s. I guess our marketing and press releases weren't up to snuff - or we didn't get the right validators to gush over our work. Nonetheless, it sounds interesting - though it won't be out in PNAS until Feb 19th.
[From Human Culture Subject To Natural Selection, Study Shows]
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