I'm doing a writing "experiment" with a character that is aware of his existence as a drawing in a world created from my imagination. He is asking me why he is the only one that exists in his world. My answer is that he isn't the only one, but rather the only one who has appeared (it is in comic strip form) thus far. What I'm trying to get at is that there's an infinite amount of possible characters that neither of us know about, and it's only until I draw them into the strip that an individual character would lose the property of existing and not existing, by being observed. There's an obvious parallel to the concept of superposition, but at the same time I don't think referencing schrodingers cat or the double slit experiment would be appropriate. Those two are practical for explaining the quantum world, but what I'm trying to explain to the character is almost more philosophical in nature than scientific. So what I'm wondering is, if anybody knows of any non-scientific texts that explore superposition or related concepts. Oh, and the strip is here if anybody is interested. Thanks in advance. It would be nice if I could get this idea across without it being too dry for the reader.