Aside from the massive and overwhelming evidence that people have been selectively breeding plants since the Stone Age, Gwern needs to read Carolyn Willekes on

Aside from the massive and overwhelming evidence that people have been selectively breeding plants since the Stone Age, Gwern needs to read Carolyn Willekes on ancient horses. One of her observations is that the ancients seemed to have valued horses which were well adapted to specific environments, whereas modern horse and dog breeding often leads to animals which are poor as animals but good on one attribute which the breeders are optimizing for. The Hacker News crowd will say "oh, Goodhart's Law!" and they may have a point.