Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Strong on Mayan facts, weak on psychological plausibility

Alten ties together a littany of Eric von Daniken facts about the pyramids, ancient Mayan ruins etc. and throws in a wild alien plot and an out of control protagonist's ego to save the world ...Zero for the use of hackneyed ancient trivia, several points for weaving a potentially interesting theory about the Yucatan peninsula meteorite, but in the end it falls apart because he has no clue about how to realistically write up psychological dynamics between his protagonist and heroine.There were shades of Lincoln-Preston here and there, but it does not deserve the comparison or the reference to those authors. This is not to say that Lincoln and Preston always get it right. They don't. But at least when they do - say in the way they mix science facts with historical fiction - they back it up with slightly better character research.