I read this book after reading and enjoying a few other books from the same author. It's a sci-fi / fantasy novel, similar to his other books. Unfortunately, it's missing the best part of his other writing, and accentuates the worst.
The book starts off on a dying world. We learn that the people are recovering from religious leaders that used advanced technology to brainwash large numbers of people into supporting them blindly, which of course starting giant religious wars. The remaining people decide to send a spaceship to a distant planet, many generations away, using the technology to make sure that their descendants that eventually land on the planet will have the benefit of some of their civilization.
The book then jumps to the main part of the novel, which takes place on the distant planet. By this time, some sort of technologically primitive society has formed. The vast majority of the book focuses on a young character that gets "programmed" using one of the old devices, and winds up leading a group of soldiers in battle against some nefarious invaders. His cleverness -- along with the information gained from the programming -- helps him succeed despite terrible odds.
Gould's characters tend to be pretty one-dimensional. The main character is always a little better than normal, in every way: stronger, smarter, wiser, etc. Other characters have a role to fill, and they don't deviate. This book doesn't break that pattern: if anything, it strengthens it considerably. In addition, it ends up feeling like a mish-mash of sci-fi and fantasy cliches: instead of exploring new genres or taking the best parts of both, the book starts off with spaceships and mind control, but then once that has succeeding in explaining a device that's basically used as magic in the rest of the book, we're done with everything about that place. The later part of the book feels like it's trying to invoke the feel of epic medieval battles, heroes and villains, but instead I just didn't care much about any of the characters. The bad guys were bad in all of the expected ways. The heroes were heroic. The love interest didn't fall into the wilting flower cliche: she fell into the brash, contrarian, self-sufficient person who eventually breaks down and gets won over cliche.
The writing itself is very readable and easy to get through. The book isn't really as bad as I make it out above -- it's just that I liked the author's previous books, in spite of a few flaws, and I was disappointed when he deflated my hopes that he would build on the best part of his writing and overcome the deficiencies.