Really fun ending to the series. Honestly felt a bit overstuffed with so much interesting stuff happening off screen or given short-shrift (one example, the weaponization of the speed of time flow. Could have been an entire novel, not a couple chapters. But also a lot of interesting stuff left for other stories in this world either looking forward or circling back to some of the stuff that was passed over. This isn't Hamilton's best, but it is very very good.