Does that work? The effect is weak, the pressure is competing with a lot more significant causes of death. And myths spread horizontally too. They’re not single family things, there can’t be enough variability and isolation to have a full Darwinian selection because it’s not like you have the tribes with the wrong belief being completely exterminated by that mistake.
That said, reading up on it it sounds like cassava can also cause acute poisoning, and that sounds like a much stronger feedback signal for people to notice.
Does that work? The effect is weak, the pressure is competing with a lot more significant causes of death. And myths spread horizontally too. They’re not single family things, there can’t be enough variability and isolation to have a full Darwinian selection because it’s not like you have the tribes with the wrong belief being completely exterminated by that mistake.
That said, reading up on it it sounds like cassava can also cause acute poisoning, and that sounds like a much stronger feedback signal for people to notice.
Once again, I will point to the source: Joseph Heinrich, the secret of our Success. Yes you are correct it is messy. It is debated.