Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Arghhhhh!

Based on the build-up on the dust jacket, I really thought Codex would fulfill my love of artifact thrillers. Alas, that was not to be.It could have been a good read, had the author taken the time to develop his characters, had he answered all the questions he had created throughout the story. But unfortunately he didn't, not even at the end which was so pointless I read it three times thinking I'd missed something.This book was not worth the money I paid for it nor the time I spent reading it. Don't waste your money or your time. Instead try "The Book of Air and Shadows" and/or the "Rule of Four," two fun books of this genre.