Children are solipsistic creatures. They tend to think of themselves as the only "real" beings in the world - any parent will tell you that a child learning to speak is followed by a phase where they constantly make demands of the people around them and get furious with confusion if they are not immediately abided. An important (and often skipped) step in becoming an adult thus is realizing that other people are other people, with their own thoughts and feelings independent of yours. But what about when it isn't? Unless, of course, you want to know what it's like to be one of Them?