Yay, more Varley. Another cracker. This one might seem a little disjointed to some. During the writing process he had real world parallels with 9/11, the Indonesian Tsunami and Katrina which kind of freaked him out. I feel that the synchronicity helped inform his writing here. The premise is one generation moved on from the previous book and studies the setting through the lens of that generation. How would they be given virtually free unlimited energy and the ability to go travel in space freely because of that. Again, the touchstone is Heinlein YA but again, this is a very adult book.