From skinny-dipping presidents to toxic tooth fillings to hit singing groups that can’t carry a tune, authors Michael N. Smith and Eric Kasum  wrote 100 of the Worst Ideas in History. It's a celebration of humanity’s historical, hysterical stinkin' thinkin'—thundering brainstorms that turned into blundering brain farts, and the astonishing impact they carry to this day. Michael Smith is my guest.