What is speculative fiction?
It is the umbrella term for any fiction that changes a rule about how reality works and then follows the consequences honestly. Science fiction sits under it. So do fantasy, alternate history, dystopia, and a large share of horror. The useful part of the label is that it describes a method rather than a set of props, which is why a book with no spaceships in it can still belong.Is speculative fiction the same as science fiction?
No, science fiction is one branch of it. Speculative fiction is the wider category, and the distinction usually matters to writers more than to readers. Margaret Atwood has argued for years that her work is speculative rather than science fiction because everything in it is something people have already done or could do now with existing tools. Plenty of writers disagree with her. The argument has never been settled and probably never will be.What are the best speculative fiction books to start with?
Pick by mood rather than by subgenre. Exhalation by Ted Chiang if you want ideas handled with real precision. Never Let Me Go by Kazuo Ishiguro if you want quiet devastation. The Memory Police by Yoko Ogawa if you want loss made structural. The Circle by Dave Eggers if you want the technology satire. Sea of Tranquility by Emily St. John Mandel if you want the whole thing done with warmth.Which of your own speculative novels should I read first?
Sleep Mode, in most cases. It has the sharpest premise of the four, a woman who rents her body to an AI while she sleeps because the maths on her rent does not work otherwise, and it gets moving fastest. Adjacent is the quietest and the slowest and my personal favourite of them. Recall is the most conventional thriller. Dead Internet is the angriest.Does speculative fiction have to be set in the future?
No. Alternate history sits under the label and points backwards. Kindred by Octavia Butler pulls a woman out of the present and into an antebellum plantation. Two of my four are set now rather than later, because the changed rule arrives in an ordinary week rather than in a rebuilt world. The future setting is a convention of one branch, not a requirement of the category.Is speculative fiction just literary fiction with a gimmick?
Sometimes, and that is a fair complaint. The label gets used as a way of borrowing genre machinery while keeping a respectable distance from the genre shelf, and you can usually spot it because the changed rule stops mattering halfway through. My test is simple. If you could remove the speculative element and the book would still work, it was decoration rather than structure.