Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing

Perhaps the cover text about "Best Sci-Fi of the Year" raised my expectations too high, but I was disappointed in this book. Although it has some interesting devices and some reasonably plausible science, the characters and their interaction with each other and their world simply wasn't compelling. There's no real hero; maybe an anti-hero. In addition, the "epic" plot line taking place over centuries merely serves to confuse and to rip you from one locale you're just starting to be interested in to the next, 50 -100 years later. As a measuring stick, I'd give Peter Hamilton's Night's Dawn (The Reality Dysfunction) series five stars.