I've been having a few interesting discussins on some other forums about labelling and categorizing within our genre. It seems to me that much of this boils down to the world we choose as our platform. I'm not sure that the labels are too helpful. In fact I think they hurt many authors more than they help. But that's another topic totally. What I'm interested in talking about here is why you might choose one world over another in which to tell your story. Why choose a pre-industrial world? Why choose a futuristic urban world? Why a medieval hierarchy? Do the worlds determine the scope of the story? Do they dictate the themes or enhance or limit the author's ability to deal with the particular issues that he/she may wish to deal with? What characteristics give you the freedom and flexibility you need to accomplish your goals? Is the world a tool? If so, why choose one over another? Why do you as a reader or writer prefer one world setting over another? Do you avoid stories told in certain worlds, and if so, why? Which worlds? If Epic Fantasy is defined in part by its worldbuilding choices, can a book be an epic fantasy and be set in the modern world?