Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dumb, Dumber ...

It's hard to be rational or objective when you realize you've been ...; best to keep this short and sour.The author plays to a juvenile and no-brain crowd; reminds me of an Ed Wood movie. Entertaining on its own level, but I expected some technical insight. Save your money.Too bad there is not zero or minus stars. This book deserves it.