“Danny! You can’t stand there!” Sally yelled at me. “Why not?” I asked. She began to fidget with her hands. “Casper is there,” Sally answered. “Who?” I asked. “Casper. He’s right there! You hurt him! That’s…” she left her sentence incomplete, searching for the right word. “That’s tragic!” I finished for her. She had an imaginary friend, who I was unaware of, and unfortunately I had stepped on it. I asked her what gender her friend is. Sally was uncertain what that meant, so I asked if the friend is a boy or a girl. She said her friend is a boy. “What is his origin, or where did he come from?” I asked Sally next. She said he’d just appeared one day. If there was anyone else in the room, I would exchange a look with them about how silly it was. But a lot of kids have friends like that, so I guess it’s not that silly after all!