Well, sci-fi has incredible things happen because of technology. Fantasy has incredible things happen because of magic. Same process, different artwork, basically.
IMO, I classify sci-fi as being subject to internal rules. Asimovs 3 rules of robotics, Star Trek's warp drive, Dune's alteration of consciousness by melange, etc. There's some core effect or set of effects that are written into the setting, and can't be handwaved away. Often it's also a core aspect of the plot. Fantasy, on the other hand, is literally about handwaving (abra-cadabra!). As a result, the plots of sci-fi tend to be "what-if" explorations of the human condition, while fantasy tends to be about heroic journeys and epic battles.
The lines blur obviously, but I put Star Wars far closer to the fantasy spectrum then to sci-fi. This is why I cried inside when ME2 started mutilating the backstory; it's so rare to find proper sci-fi.
Modifié par sbvera13, 04 juillet 2011 - 03:31 .