Snowmobiles, horses, rats, and memes

Abstract
This essay [by Boone and Smith] brings into sharp relief a ubiquitous confusion that has dogged discussions of cultural evolution, deriving, I suspect, from a subtle misreading of Darwin's original use of artificial selection (deliberate animal breeding) and "unconscious" selection (the unwitting promotion of favored offspring of domesticated animals) as bridges to his concept of natural selection. While it is true that Darwin wished to contrast the utter lack of foresight or intention in natural selection with the deliberate goal-seeking of the artificial selectors, in order to show how the natural process could in principle proceed without any mentality at all, he did not thereby establish (as many seem to have supposed) that deliberate, goal-directed, intentional selection is not a subvariety of natural selection! The short legs of dachshunds, and the huge udders of Holsteins are just as much products of natural selection as the wings of the eagle; they just evolved in an environment that included a particularly well-focussed selective pressure consisting of human agents. These phenotypes fall under the same laws of transmission genetics, the same replicator dynamics, as any others--as special and extreme cases in which the default "randomness" or noisiness of selective pressure has been greatly reduced
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