This story has the unusual circumstance of beginning and ending in a cave. Perhaps that's imprecise. This story, like all stories about human beings if you go back far enough, begins in a cave. One could argue the point that the story should really take place on a beach then, since evolutionists like to dispute this point, but fish with legs are not human beings. Or at least not yet. Or perhaps not at all, ever. That's not the important part. The important part is that this story begins in a cave and it has nothing at all to do with human beings. Or at least it won't for another sixty centuries or so, but there's no need to be splitting hairs over a handful of years.