And the rare collisions that remained were increasingly understood not as simple failures of individuals, but as moments when two nearly equal prediction engines reached the limits of what either could foresee before momentum finished the calculation. By the summer of 2026, the city had become a laboratory for machines that watched other machines. Every privately owned car, delivery van, taxi, and municipal bus continuously uploaded anonymized telemetry—steering angle, brake pressure, tire slip ratio, camera detections, radar tracks, even estimates of driver attention derived from cabin sensors. Insurance companies, transportation researchers, and road authorities no longer argued primarily over eyewitness testimony. Instead, they reconstructed collisions frame by frame from synchronized sensor logs, digital maps, and vehicle event data recorders. Dr. Elena Sato, a transportation systems researcher, found herself troubled by a statistical pattern. Her team had ...