You’d start with a closed‑loop grid that recycles every ton of output back into input. Sensors on every street, every building, feeding a central ledger that tells you exactly where waste is, where it should go, and how much it can be reused before it needs to be broken down. Then you add a layer of “controlled variables” – random traffic light delays, unpredictable public art installations that pop up on a schedule, small disturbances in the schedule that force people to adapt on the spot. The algorithm would run the logistics, the chaos would keep humans from falling into routines. It’s a fine line, but if you keep the core efficient and the edge slightly chaotic, the city stays productive without becoming a dull machine.