Instruct: Classify Amazon reviews into positive or negative sentiment
Query: strong book

I enjoyed the logic in this book. Reading the book carefully was far more useful than casually skimming it; on my first 5 minute skim I nearly incorrectly wrote the book off as not useful. Not surprisingly, I agree with the other commenters that the problems raised by the book are not solved yet (by the book, or otherwise, to my knowledge), but the basic issues are well-clarified.