Shower faucets are truly the snowflakes of the bathroom world, because just when I think I’ve seen every possible permutation of nozzles and levers, I take a shower at a new location and am greeted by an arcane apparatus unlike any I’ve seen before. If it were up to shower nozzle designers, we would be living in a world in which each toilet necessitated a unique series of knobs and pulleys to flush, and only after weeks of practice could you hope to operate your idiosyncratic toaster. Couldn’t we please just adapt a universal shower nozzle system? Or do I have to feel like I’m trying to figure out how to pilot a submarine every time I stay at a hotel?