To read or watch science fiction is to experience a world different from our own, where x-ray vision and warp speed space travel are possible. The important word in science fiction is fiction. When you watch a sci fi movie or read a sci fi book, you don't check whether all the facts are right. The storyline is the important part. It is, after all, a story, not a text book.
Science fiction is a category, like fantasy and romance, nothing more.
We must remember, what is fiction today may be fact tomorrow. This show had a concept of prothesis before anything alone the lines of bionic body parts came along. Jules Verne wrote about undersea travel years before submarines were even invented. Who knows, in the future we might actually be star hopping like in the movies. My favourite Sci-fi movies are the Star Wars trilogy.