Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: A disappointing effort from David and Leigh Eddings.

The Rivan Codex is a disappointing effort from the Eddings. Rather than advance the story of Pol, Garion, Old Wolf and company, this book seems to have been published just for the sake of publishing. It contains material that the authors wrote as references when they began writing their trilogies. Some of the 'holy books' are truely mind numbing while others are just gibberish.In the foreword David Edding states that they published because of pressure from fans of his trilogies. After reading the Rivan Codex I think fans would have been better served re-reading the original books.