“All Over the Map”: Building (and Rebuilding) Oz
The story is in the world; not the other way around. That is to say, a world is big and hopelessly uncontrollable. It spills messily outside the edges of any one story. … The challenge of genres like science fiction and fantasy is to not only spin a good tale, but to invent for that tale an imagined backdrop that seems to stretch clear into the horizon.