The surprise is half the battle. Many things are half the battle, losing is half the battle. Let's think about what's the whole battle.
David MametAnyone can write five people trapped in a snowstorm. The question is how you get them into the snowstorm. It's hard to write a good play because it's hard to structure a plot. If you can think of it off the top of your head, so can the audience. To think of a plot that is, as Aristotle says, surprising and yet inevitable, is a lot, lot, lot of work.
David MametThe government, for example, has determined that black people (somehow) have fewer abilities than white people, and, so, must be given certain preferences. Anyone acquainted with both black and white people knows this assessment is not only absurd but monstrous. And yet it is the law.
David Mamet