Full of interesting and relevant concepts, such as what price we'd pay to live in a utopia, and the place of AI in saving the environment. These questions were the heart of the book, and the author skillfully drip-feeds information and clues, withholding just enough to build tension.
There isn't much tension in the rest of the story, though. It's very slow-moving, which I'm generally a fan of, but if this had been 10% shorter, I would have liked it more. It has a cosy vibe, uncommon in dystopian fiction, but perfectly suited to the story. I particularly appreciated the theme of reforming a system rather than tearing it down.