But did you know that people used to believe that? It makes me wonder why — probably some time the only blind person somebody knew was an old wet-nurse, and it was just coincidence… but the “causation” was apparent enough to the observer. The fact that most wet-nurses did not become blind, and the fact that most blind people were not wet-nurses was irrelevant — “everybody knew” that breastfeeding could make you go blind.
This was one reason why upper-class women hired wet-nurses — so that they themselves wouldn’t go blind. Isn’t that ridiculous?
Yet how many other superstitions have persisted?
Click here for another April Fool’s Day post. Funny until it becomes true.