Ancestral Night

A Perfect Far Future SF Tale
After feeling that Becky Chambers' Space Adventure books felt a little too soft and shallow, this story filled the void I didn't know existed.
The philosophical concepts both personal and political were fantastically fleshed out: free will, identity, what a perfect society would be, how much government control is too much. All these concepts were pushed to the edge, but in a way that never felt preachy.
At the same time, the story was excellent and gripping. I never felt like I knew what would happen next, and the stakes kept growing in unpredictable ways. It really blew me away.
I'm a big SF fan and this is possibly my new favourite book. I've already bought the sequel, and may just have to become an Elizabeth Bear completest.