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HPsquaredlast Friday at 2:13 PM2 repliesview on HN

This is where evolutionary theory can be viewed through the lens of coevolution or group selection (a group defined as containing both a selection of humans, and also animals and plants in varying degrees of domestication, as a whole system). This is in contrast to kin selection, which only accounts for genetic relatedness.

I remember in one of Jiang Xueqin's videos, he made the interesting argument that "grain domesticated humans" at least as much, if not more, than "humans domesticated grain".


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dkarllast Friday at 5:12 PM

I think the "wheat domesticated humans" argument is about changes to our behavior, our culture and social structures, rather than genetic change. It isn't domestication in the evolutionary sense. It would be like keeping zebras on a farm with horses and doing your best to tame and train them. You might be able to change their behavior so that they behaved differently from wild zebras, but it wouldn't be domestication unless you bred them over generations to produce a population that was genetically different from wild zebras.

IAmBroomlast Friday at 3:49 PM

Grains aren't very good food until bread is invented (probably from sprouted grains, originally). Seeds are designed to keep their goodness inside, and are very good at that containment. Bread in turn requires cooking. (I wonder now if there was a brief period of surviving on raw sprouted grains... which are far inferior because they mold so quickly.)

Wisdom teeth are far more valuable to a precooking human, who has to chew constantly to break down plant cells. The extra chewing causes stress that induces the jaw to grow longers, allowing space for the wisdome teeth.

We're basically at the "awkward teenage" part of evolving past raw-food diets.

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