Plot offers the promise of Chekov and his gun, of Hitchcock and his bomb under the table. An event here leads to a choice there which spawns another event over there. Foreshadowing isn't just a literary technique used sparingly: it lurks in the shadow of every plot turn. Plot promises pay-off. A good plot often betrays this promise and does something different than the audience expects. That's not a bad thing. You don't owe the audience anything but your best story. But a plot can also make hay by doing exactly what you expect: show them the gun and now they want to see it fire.

CHUCK WENDIG