The first time linguist and game studies theorist James Gee played a video game, he failed many times over. But instead of giving up, he merrily persevered, choosing to exercise “learning muscles” he hadn’t worked out since his grad school days. “Lots of young people pay lots of money to engage in an activity that is hard, long, and complex,” he realized. Games were evidence that humans love learning. But why do they seem to love it more during Minecraft than in the classroom?