What is fiction? That's the question that popped into our minds when thinking about Orson Welles' radio War of the Worlds performance, which set off a public panic of listeners who thought NJ was truly being attacked by aliens. Those aliens didn't really exist, since it was all pretend. But, on the other hand, they did (and do) exist in a way. They can be described, referenced, and can have as much veracity to people as physical objects. And the worlds created in fiction can contain real things - cars, people, New Jersey. Can something both exist and not exist?