You’re all familiar with the useless machine, right? It’s a box with a switch and every time you press the switch a hand comes out of the box and turns the switch back off. And that’s all it does. Pretty useless. “Look who’s talking.” Hey! Your insolence aside, this is an upgraded version with several new clever behaviors added. Does that make it more or less useful? That’s for you to judge. Me? I only judge eating and bikini contests, and ideally the two combined.