Robert E. Howard’s essay on the world of Conan, “The Hyborian Age,” is perhaps more interesting
The major thing that sets science fiction, fantasy, and horror stories apart from others is the building of worlds – countless new worlds are in constant creation and evolution whether by projecting into the future, re-imagining the past, altering the present, or instead constructing entire new realities. Our mission is to squeeze whole universes between the covers of a book, so that they can be explored by anyone who wishes to experience more perilous worlds.
“From what land come you brother, that you speak such perilous words and seem not to be afraid”
Mark Twain, A Connecticut Yankee in King Arthur’s Court