The Roman writer Juvenal is the origin of the phrase [1]. Neat to see pictures of them. [2] And humbling to think it took almost two thousand years for them to

The Roman writer Juvenal is the origin of the phrase [1]. Neat to see pictures of them. [2] And humbling to think it took almost two thousand years for them to find out that the proverbial phrase was wrong. [1] https://www.etymonline.com/word/black%20swan https://www.etymonline.com/word/black%20swan [2] https://en.wikipedia.org/wiki/Black_swan https://en.wikipedia.org/wiki/Black_swan