There are many sub-genres of Sci-Fi ; military sci-fi, Cyberpunk, post-apocalyptic, dystopian and so on and so on. But there’s another view – there are only TWO types of Sci-fi.
The first type takes you by the hand and says “Here’s a different world. This is how it works.” The characters in the story don’t stop to explain exactly how their ship travels faster than light, I mean, with diagrams and equations and so on, but they do drop the crucial explanations that help the story make sense.*
The other type of Sci-Fi can be summed up by this picture from Onyxcarmine of Deviantart
“The Stars are Legion” fits firmly into the second category of Sci Fi. Hurley’s story is set on living planets, a group of living planets so close together that characters get from one to another by some kind of semi-sentient space bike. They shoot at each other with cephalopod guns… Guns that shoot out cephalopods. There’s no tedious opening explaining the origin of the Legion, as the collection of planets are known. There’s no omniscient narrator describing the scene for you to imagine. There’s just the story, told chapter by chapter from the point of view of two of the central characters. Since one of them has recently lost her memory for the umpteenth time, she can’t help you understand how things work, because she either can’t remember or is having muscle memory make things work for her without any understanding. The other character freely admits to having lied, to currently lying to other people and to planning things she won’t admit, even to her co-conspirators. Talk about your unreliable narrator!
Tales that leap into the action and rush you along can be tricky to follow, and that’s when we’re talking near-future or straight forward stories. Hurley has imagined an entire ecosystem, no, a SOLAR system that is unlike anything we’ve seen before. These planets open and close, and have multiple internal levels. A single family rules a planet, or maybe several planets, and harvests organic material to repair the home planet. Yes, it can be confusing, and it’s exactly the kind of story that I usually shrink from. Often, the author of such a story is not explaining because they know and love their material so well, they’ve forgotten that we, the readers, don’t know it that way. But Hurley is telling a story, and the amnesia of the one character and duplicity of the other is part of that story, part of the engine of the story. If you surrender to the flow of the story, all your questions are either answered or proved irrelevant. I read the whole thing in three days, and it would have been two except I deliberately put the book down the second night. I was two chapters from the end and I wanted to read it with my mind fresh and awake – the final part of the book happens at a tremendous pace, and there’s a lot to take in.
Hurley sets a high bar here. This book is going to be very successful, and so there will be a lot of people rushing out their own versions of the “Jump on the hover dog” genre. But it’s not easy to do it this well, and it’s very easy to do it badly. If you’re not going to be there to hold your reader’s hand and explain things, then you need to know, not only how everything works, but also what’s important for the story.
*However, if any character talking to another starts their speech with “As you know…”, put the book down AT ONCE and walk away. It’s a bad one.