I am a novice when it comes to science fiction, so maybe that is why I was disappointed with this book. I tried to push myself to finish this book, but at some point, I decided not to waste my time anymore. The characters were shallow and stereotypical, the plot structure was somewhat predictable but these things can be forgiven if the science is deep and thought-provoking. Unfortunately, after reading some utter nonsense written in this book about nanotechnology and noticing other instances of inaccurate science, I gave up. It looks like the author is genuinely excited about the possibilities of various fields of science but is not patient enough to probe the science deeply to fish out fantastic possibilities. I read this book won the Hugo award. Does that mean the other books that year were even worse than this one? I truly believe that science fiction can accomplish a lot more than what this book has done.