" People were like machines. They broke down. They rattled. They could burn you or maim you if you weren't careful. Her job was not only to figure out why this happened and who was to blame, but also to listen for the signs of it coming. Being sheriff, like being a mechanic, was as much the fine art of preventive maintenance as it was the cleaning up after a breakdown. "

― Hugh Howey , Wool Omnibus (Silo, #1)