And the city listened back. Sometimes the devices registered urgency—a failing pump, a heater on the fritz—and relayed it to the right human hands. Small rescues multiplied into quiet gratitude. Sometimes the devices recorded things no one else had: a late conversation that clarified a dispute, the last melody of an old radio left in a bar's attic. For those who noticed, the network became a set of low, helpful hums under the city's normal noise.