Read the paragraph. The city planner proposed closing one downtown street to cars on summer evenings. Merchants feared lost parking, while parents imagined children moving safely between benches and food carts. Instead of making the change permanent, the city tested it for eight Fridays and counted foot traffic, sales, noise complaints, and how long people stayed. The experiment treated the street not as a fixed channel for cars, but as a public space whose best use could be learned from everyday behavior. Which statement best expresses the central idea of this paragraph about seasonal street closures?