Bats in caves, giving each other blood when one has had a bad hunt. They are trying to determine if bats remembered individuals to punish defectors. Interesting stuff.
Me too. That graduate course in anthropology was 30 years ago. Can't recall the title of the book.
The selfish gene by Richard Dawkins?
I can’t remember if they determined if the bats actually remembered individuals, but interesting either way.
Then the bats said to heck with this altruism stuff let’s cook up some covid..