The firmness of the setup must be adjusted to the target audience. We set up more prominently for youth audiences, because they’re not as story literate as middle-aged filmgoers. Bergman, for example, is difficult for the young–not because they couldn’t grasp his ideas if they were explained, but because Bergman never explains. He dramatizes his ideas subtly, using setups intended for the well-educated, socially experienced, and psychologically sophisticated.
– Robert McKee, Story