Imagine the tech utopia of mainstream science fiction. The bustle of self-driving cars, helpful robot assistants, and holograms throughout the sparkling city square immediately marks this world apart from ours, but something else is different, something that can only be described in terms of ambiance. Everything is frictionless here: The streets are filled with commuters, as is the sky, but the vehicles attune their choreography to one another so precisely that there is never any traffic, only an endless smooth procession through space. The people radiate a sense of purpose; they are all on their way somewhere, or else, they have already arrived. There’s an overwhelming amount of activity on display at every corner, but it does not feel chaotic, because there is no visible strife or deprivation. We might appreciate its otherworldly beauty, but we need not question the underlying mechanics of this utopia — everything works because it was designed to work, and in this world, design governs the space we inhabit as surely and exactly as the laws of physics.