Socks. This is one way the world could end. Not too long from now, when video cameras and wireless transmitters have become so cheap as to be effectively disposable, so tiny as to be unnoticeable, some clever young fellow will get the idea to discover where his socks vanish to, and clip tiny camera-transmitters to each one. Once a few have disappeared he will sit down at his computer, pick up his slice of pizza, click the video feed open, and see—