Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dated Book from Dated Authors

This book would have been helpful--if it had been written twenty years ago. Oh, I'm sorry; it already was. The authors (mainly Engel) use ten-year-old examples from books they wrote over twenty years ago, putting them some thirty years out of step with the way missions are mainly handled today. They shoot themselves in the foot by citing several current examples of missions' organizations they claim are doing it right. If they had done this in a positive, helpful manner rather than a smug, superior attitude, this book may have been of some use.This is just another example of Christian authors making a quick buck by rehashing stale examples to make themselves sound like they still know what they are talking about. The review in Christianity Today magazine really says it all. Disappointing.