" While not quite as good as, and a bit more confusing than, The Integral Trees, this was still quite enjoyable. It was good to pick up the characters where the story left off and get a bit more of the backstory, especially on the mysterious Kendy. It would be even better if Niven ever decides to wrap up the remaining loose ends, perhaps showing what the Smoke Ring civilization might look like a generation or two down the line, but I would bet against him picking the thread back up again twenty years after the last installment. "
— Keith, 1/29/2014