Ian Keldon wrote:
I'm not going to bother repeating (again) the textbook definitions that show this to be the case.
Go ahead and repeat anything you like from a "textbook" - won't make it true or relevant.
Dennis' point that sf emerged from the fantasy genre is well taken. I'm not sure, however, that this origin in itself precludes sf from being considered as a genre in its own right.
Well, one can call it a genre or a subgenre or whatever suits the purpose. It's true, though, both that science fiction is a form of fantasy literature and that there are other kinds of fantasy that don't fit any reasonable definition of science fiction - but all fit within the overall definition of fantasy.