Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Read his other books.

I'd rank his books in this order (first to worst): The DaVinci Code; Angels & Demons; Deception Point; and this turkey. Do not read this book -- you will regret it. The characters are supposed to be some of the smartest people in the world, and they are as dumb as a box of hammers. And while I have been able to suspend disbelief in his other books because they were just so much fun, I couldn't do it in this book, because it is NO fun. It was written around 1998 -- when we were gearing up for Y2K and the whole world was installing a trillion safe guards around the systems and data. Who would believe that the NSA wouldn't have better security on their systems/data? The villain is obvious from about the first minute he speaks. Again: do not read this book. You'll be so sorry you wasted your time.