Fictional Genesis

Walton declares in his essay that fiction need not be an artifact of human creation. Fiction is merely any object which serves as a prop in a game of make believe. He gives an example of cracks in a cave wall that miraculously spell of the beginning of a story as fiction. Indeed, this particular hypothetical would fit his definition, as it might serve as a prop to someone who decides to use it in a game of make believe. What if the inscription on the rock had spelled out something corresponding to reality? For instance, had the rocks spelled out "Istanbul is the capital of Turkey...", would we consider it a naturally occurring work of non-fiction? The limits of both Walton's and my ridiculous hypothetical aside, it is an important point to consider. While Walton would like to maintain that anything can serve as a prop for make-believe and thus be rendered fiction, it is slightly more difficult to conceive of a work being non-fiction that was naturally occurring as well.