Locked behind a gated fence and unseen by the public until now, lives Patty, Microsoft's Surface 2.0 stress test robot. Designed to see just how much Gates' touchscreen can take, this lady bot uses 80 compressed air-driven probes, six motors and a robotic moving head to apply maximum stress to the display. It works as such: by giving Patty a command, engineers can move probes across the screen at 25 inches per second -- mimicking the movement of fingers, hands and whatever else it might encounter IRL. With
