As human beings, we’re always learning. The “classroom” might be in a formal school setting, at home, or somewhere else, but no matter where we are, we’re constantly taking in new information. Sometimes, the lessons come naturally and are easy and fun, like learning how to play a new game. Other times, they’re boring and uneventful, but still necessary, like figuring out how to file taxes (or how to convince someone else to do them for you). Either way, we usually manage to absorb these lessons without too much existential fuss; learning them doesn’t significantly alter our perspective on life. But what happens when we’re confronted with a lesson that threatens to turn our understanding of the world upside down?