> autoimmune reactions on societal levels (ie. humanity seen as an organism attacking itself) Tiger salamanders, when facing overpopulation in crowded communit

> autoimmune reactions on societal levels (ie. humanity seen as an organism attacking itself) Tiger salamanders, when facing overpopulation in crowded communities, will have a few larva spontaneously develop larger frames, bigger jaws and hyperaggressive, cannibalistic demeanors. The "cannibal morphs" will attempt to devour those in the community most distantly related first, which clears some room and confers a selective advantage on its closest kin. https://academic.oup.com/beheco/article/5/2/225/212146 https://academic.oup.com/beheco/article/5/2/225/212146 Probably risky to read too much into that. We aren't tiger salamanders, after all, and they don't, far as I can tell, debate and refine their own ethics in any meaningful way. Still, it's terrifying to consider that tribalism and even genocide might have an evolutionary tailwind. I'm not an evolutionary fatalist... but it would suggest we have a lot of work to do.