Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good idea poorly executed

This could have been a terrific book. The plot is exciting, the characters intriguing. It's a shame it is so poorly written. The author has a difficult time with dialogue. All characters speak in the same wise-crack mode as the protagonist. He also has an unpleasant habit of including long discursive passages, the main purpose of which is to expound on his theories of human behavior rather than to advance the plot or develop the characters. And, ouch!, those sex scenes. Clearly not his long suit. Perhaps his editor suggested that he spice things up, and so he pasted these scenes in at the last minute.Perhaps he needs a new editor.