"The unspoken premise of [Jesse Schell's] DICE 2010 lecture is that people are prisoners to external reward systems. "External reward" is practically a curse word to me, a thing I'm ever vigilant against. I don't need experience point systems giving me a false sense of mastery, or Xbox "achievements" for watching the opening movie of a game (that's a real one). But people absolutely are driven by external rewards. So much so that Schell doesn't even question it, he simply takes it as given."