They’re everywhere — creators, innovators, mavericks — and they sure do know how to suck all the air out of a room. But most of the world’s work isn't making the newest technology or shaking up an entire industry, it’s shepherding the things that already exist. The falls a figure skater won’t take because the ice is perfect; the angst a patient won’t feel because a dentist helps care for her teeth; the hours not spent roadside thanks to an automotive technician: this is the fruit the maintainers' labor.