"I was having dinner with a group of friends about a month ago, and one of them was talking about sitting with his four-year-old daughter watching a DVD. And in the middle of the movie, apropos nothing, she jumps up off the couch and runs around behind the screen. [...] And her dad said, "What you doing?" And she stuck her head out from behind the screen and said, "Looking for the mouse." Here's something four-year-olds know: A screen that ships without a mouse ships broken. Here's something four-year-olds know: Media that's targeted at you but doesn't include you may not be worth sitting still for. Those are things that make me believe that this is a one-way change. [...] We're going to look at every place that a reader or a listener or a viewer or a user has been locked out, has been served up passive or a fixed or a canned experience, and ask ourselves, "If we carve out a little bit of the cognitive surplus and deploy it here, could we make a good thing happen?" And I'm betting the answer is yes."