Fiction: Unsong by Scott Alexander. The funnest and funniest sci-fi yarn since Douglas Adams, amidst tantalizing explorations of theodicy and existential absurdicy. It's even free: http://unsongbook.com https://github.com/moorederodeo/Unsong-In-Ebook-Format/relea... Non-fiction: The Righteous Mind by Jonathan Haidt. Of all the books of the last ten years, I can't think of one that more transformed my understanding of…
However, I feel like the author sometimes falls into the same biases/flawed thought patterns he spends the book describing. Because of this, I'd rate it as very good instead of great.