Actors are steeped in a world of agents and where the next job is coming from and what are their expenses and what is the hotel like. You want to take them out of that world and dump them into another world, so that when you meet them on the screen they don't seem like the guy who was in two others movies that year.
Danny Boyle
People say you never remember anybody who dies in movies, and it's true, you don't. You don't even remember people who disappear.