A visitor standing outside a hotel in Bali can open a phone, request a car and watch the machinery of a modern transport platform spring into life. A driver appears on the screen. A price is agreed. The route exists. The technology has done everything it was designed to do. Then a message arrives from the driver: *I can't pick you up there. Walk and meet me somewhere else.* The strange thing is that nothing on the digital map necessarily explains why. In parts of Bali, app-ba