M John Harrison has posted an interesting response to the question of realities within fiction on the TTA Press forum. Believe it or not I’ve actualy spent quite a bit of time debating this issue myself. Not that you could tell that by my contribution to the thread. I agree with MJH, but it doesn’t make me quite as angry.
http://www.ttapress.com/discus/messages/27/4895.html?1169498640