Oh, there's a cure for the FOOLS…
re: the dollar sign-
"One of the most esoteric origin stories links it back to the Bohemian thaler, which featured a serpent on a Christian cross. That itself was an allusion to the story of Moses winding a bronze snake around a pole in order to cure people who’d been bitten. The dollar, so it’s said, derived from that sign."
sauce
https://www.bbc.com/worklife/article/20190528-the-curious-origin-of-the-symbol