Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Extrremely Muddled Thinking

The first book in this series sounded so plausible. Reviewers pointed out the fact that he almost never identifies his sources, and many of the sources they could indentify turned out to be wrong, but what the heck, I could live with that. By the second book he's already beginning to write more from imagination than reality, and in the last one he writes an entire "Bible" in the words of his imaginary space guy. I love "true history of the world" kinds of books, but this guy shows a progressively worse lack of regard for logic and reality as he proceeds. For a better read, tryThe Mayan Prophecies : Unlocking the Secrets of a Lost Civilization