No, I'm not above using cliche titles, when they serve me. Because I'm so very fond of stirring up controversy, I'm going to talk about something that divides more people than religion, politics, or the Great Pumpkin: movie/book adaptations. Fair warning: we're going to talk about some big name franchises, including Harry Potter, Star Wars, The Lord of the Rings, Star Trek, Jurassic Park, and others, so if you don't want to risk potential spoilers from either the book or movie versions of any of these, you might not want to read this post. Otherwise, let's mire ourselves in controversy.
Speculative fiction, broadly, includes the stories that are typically classified as science fiction and fantasy, but if you've written in the genre realm for long, you may have noticed that the terminology employed by libraries and other sources to classify genre fiction is somewhat limited. Maybe we genre writers aren't as "serious" as the "real" authors, but that hasn't stopped us from developing our own terminology to help describe our works. Since I think that many of these terms would be useful for both readers and writers to know, I've sought to describe some of them below.