Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: I really hate to give up on books...

... but this one just kept putting me to sleep [literally]. I have devoured Vinge's books since I stumbled upon a copy of A Fire Upon the Deep. What makes Vinge interesting goes much deeper than simple futurizing and whiz-bang techno-jiggery. His characters are so memorable, especially the treacherous ones [who can match the Tines of AFUtD, or the Emergents of A Deepness in the Sky?].This book, sadly, relies on a spooky premise of a not-so-distant future to win through, and features characters that are, well, down right boring. I just don't really care how this book ends, and that's never a good sign, especially after force feeding myself on it for two hundred pages.Vernor, please give us fascinating characters! You're among the best at that.