There are films you see and films you carry. La La Land is the second kind, one of those rare works that does not stay on the screen when the credits roll but follows you out into the parking lot and rides home with you in silence. We first saw it years ago, in a theater, and we have thought about its ending more times than we can count. Returning to it now, we wanted to know whether it holds. Whether the feeling was real or whether we had invented it in the years since, pol