All content needs to be made interesting. What you’re doing as a writer is introducing variable rewards into your story. Everything that engages us, all pieces of content are engineered to be interesting,” he said. “Movies aren’t real life, books aren’t real life, your article isn’t real life. It’s manufactured to pull us one sentence after another through mystery, through the unknown. It’s a slot machine. Your article is a slot machine. It has to be variable. So just because an experience introduces variability and mystery — that’s good!”
Slot machines perfected addictive gaming. Now, tech wants their tricks | The Verge.