Today we went over questions which will be on the test on Thursday. It was largely helpful reiteration, but I did learn something today which I did not know previously.

I learned that an etiology is a metaphorical or mythological explanation for why something is. For example: Snakes crawl on their bellies as punishment for encouraging the first humans to eat from the tree of knowledge, or woman have pain in childbirth as punishment for disobedience. Two examples that are closely linked and involve punishment. Didn't have that as the immediate intention, but there we go.

Not explanations that science would accept, obviously. But that is why it is mythological rather then factual.