Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware of this book!!

Beware of this book!! I bought this book to review the industrial engineering portion. After wasting my time working through several chapters, I finally discarded it. This book is so full of errors that it does more harm than good. I have the fourth edition. One would think that errors would be corrected with each new edition. The author should be embarrassed to have his name on something so completely useless. I want my money back!