In retrospect, Madeleine L'Engle's books were much more of their time than they seemed when I read them in the 90s. "Auntie L'Engle, how do I know if I'm really in love?" "Well, sweetie, you'll develop ESP." I think you made a post about the literary significance specifically of dolphin ESP, which also makes an appearance, but I can't find it now because siikr is down...