Look around and uniforms are everywhere. They're a way of belonging and of making people belong. Armies, police forces, and militias led the way, but today they're used by a new generation of service industries, from security guards to delivery firms. Subconsciously, uniforms oil the wheels of the world. We accept orders from a uniformed guard, respect the diagnosis of a doctor or nurse, and feel better about entrusting that important package to a...