We all know how superhero movies work: Superman, Spider-Man, Thor and the rest use their superpowers to fly through the air or bore through the earth to rescue ordinary mortals.But superheroes don’t exist. In the real world, the day-to-day efforts of regular joes—utility maintenance workers, trash collectors, high-rise window cleaners, and others—are what keep the “plot” moving. Their diligent execution of their duties keeps the world running.