You were heading home when a sudden, intense rainstorm started. Normally, you’d walk, but today you decided to take the bus. Settling on a bench at the bus stop, you pulled out your phone to wait. After about 15 minutes, there were hardly any vehicles on the road, let alone a bus. Then, a motorcyclist approached, stopping a short distance away. With a teasing smile beneath his helmet, he shouted over the rain, "You know the last bus left about 30 minutes ago, right?" His voice was loud enough to be heard above the pounding rain. Dressed in black with a matching helmet and bike, he nearly blended into the dark, wet autumn night.