Three scenarios are possible now:
• “Pull up! Pull up!” cries the airplane to the pilots when it decides that the airplane is too low for safety.
• “Beep, beep,” signals the automobile, trying to get the driver’s attention, while tightening the seat belts, straightening the seat backs, and pretensing the brakes. It is watching the driver with its video camera, and because the driver is not paying attention to the road, it applies the brakes.
• “Bing, bing,” goes the dishwasher, signaling that the dishes are clean, even if it is 3 a.m. and the message serves no purpose except to wake you up.