Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Thoughts from both sides...

Because this book is paperback, and only the first half of the entire book it is awesome. As far as the information goes inside, it is helpful. The only thing that bothers me about this book is that some of the problems at the end of the chapters make NO sense what so ever, and there is no help in sight of figuring out HOW to do the ridiculous problem they present. I have heard, though, that this is true of any physics book and that you can still make a good grade without ever getting the book's answer for homework problems. Another unfortunate thing is that unless you are a professor you really have no say in whether you get this book or not. =)