People will play two rounds of our game and they'll get really, really frustrated it. But if we make them play five games and we give them a colored helmet, they won't switch between game loops. The difference between these experiences has nothing to do with the reward at the end. So study calculus for five minutes is frigand boring. And even though an a is worth more to me on a test then some colored helmet in a game that i'm not even t play for six months from now. Like, i can't grind in real life.