If thereโs a zeppelin, itโs alternate history. If thereโs a rocketship, itโs science fiction. If there are swords and/or horses, itโs fantasy. A book with swords and horses in it can be turned into science fiction by adding a rocketship to the mix. If a book has a rocketship in it, the only thing that can turn it back into fantasy is the Holy Grail.
Debra Doyle