Like in the first book in this series, my favorite parts related to the socioeconomic and political consequences of relativity, including instant travel (or lack thereof) as well as their implications within Hegemony, TechnoCore, and Ouster societies and cultures. I never really latched onto or connected with any of the characters, which was the main issue preventing me from getting full-on into the book and buying into its sprawling universe. It took me a while to get through the last third or so, which suggests that it will be a while before I return to this series (although I'm not ruling it out, and will likely continue eventually). I think I would have liked the book more than the audiobook, something to consider!