Science fiction - and the correct shortcut is 'sf' - uses actual scientific facts or theories for the source ideas or framework of the story. It has some scientific content, however speculative. If it breaks a law of physics, it knows it's doing so and follows up the consequences. If it invents a society of aliens, it does so with some respect for and knowledge of the social sciences and what you might call social probabilities. And some of it is literarily self-aware enough to treat its metaphors as metaphors.
Ursula K. Le GuinIf we can get that realistic feminine morality working for us, if we can trust ourselves and so let women think and feel that an unwanted child or an oversize family is wrong -- not ethically wrong, not against the rules, but morally wrong, all wrong, wrong like a thalidomide birth, wrong like taking a wrong step that will break your neck -- if we can get feminine and human morality out from under the yoke of a dead ethic, then maybe we'll begin to get somewhere on the road that leads to survival.
Ursula K. Le Guin