I found this pretty disappointing. The world didn't make much sense to me, which I think is a pretty bad failure for SF. Why are these people squabbling over petty change when they have energy surpluses large enough to quickly terraform ice planets? Why do the AIs let humans make the important choices? If linking human and AI minds leads to such amazing advances, why has it only been done once? If the main character's antique weapon is so powerful, why doesn't everyone use things like that?

Overlooking the SF shortcomings, the book was pretty flat. The characterizations weren't interesting. The plot seemed contrived.