Once you sign on as an actor, you know, you don't go to the editing room, you don't see how they cut, you don't see how they score, you don't see how they cast the rest of the movie.
Like most parents, I've been stumped by homework, the big questions, such as: 'What is the point of geography - the pilot always knows where we are going?'. Answer: 'If you didn't know any geography, people would think you were an American, and you wouldn't be able to put them right because you wouldn't know where they live. '