Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Book - prove it by trying it!

This is an excellent book. I had been suffering from signs and symptoms that doctors were having much difficulty diagnosing as well as giving me any long term results.As for the review title questioning the proof, when you actually try the authors methods most of you will find the proof. Reading something only helps if you actually apply the advice and not give up before attempting the application.This is an excellent book and can really help a lot of people.