If you sit down on your couch and the TV remote is sitting in front of you, inviting you to press the power button and see what’s on—that’s a nudge. The TV itself is a nudge—if it weren’t there at all, you’d have to go somewhere else (maybe out to dinner!) to watch a game or a sitcom or, for that matter, car-dealer ads. But with it sitting right there, it’s easy to make the choice to stay put and turn it on.
