There are a lot of books, I think, that are classics in their field, required reading, not because they did their ideas best, but simply because they did them first. Lord of the Flies is my go-to example for this — it didn’t thrill me when I read it, because by that point I’d already read Galax-Arena and Battle Royale (among others) and seen those same ideas explored better elsewhere.
The critical buzz that greeted the release of Ann Leckie’s Ancillary Justice suggested that it was doing just that to Left Hand of Darkness: that this was the gender-bending sci-fi of the new millennium, the long-awaited upgrade to LeGuin’s seminal work on the subject (by now nearly fifty years old). But after reading it, I couldn’t disagree more — Ancillary Justice doesn’t replace Left Hand of Darkness or retread that ground; rather, it complements LeGuin’s story in a way that I have never before seen two novels do, especially not novels written by different authors and separated by decades. In tandem, they explore how gendered pronouns influence the way we perceive and interpret human behavior. They come at the issue from different angles, and in so doing, call into question some of our most basic assumptions about masculine and feminine.