The mystery of the potty is revealed in the interesting and thought provoking book about the evolution of toilets. For example, did you know that some ancient toilets were one long bench of 6 to 8 seats and people just did their business together? Or that pots of pee used to be collected by the side of the road to bleach wool made into clothing? “Remaking the John: the Invention and Reinvention of the Toilet” uncovers all the gruesome details you thought you didn’t want to know.