Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Does not deliver what it promises

I was disconcerted to find a very substandard book instead of what I had expected. I had ideas of receiving a really helpful book to make me a better technical recruiter, but I received a book of personal opinions and theoretical protocols that even I know better than to try, and I am pretty new at this. Luckily I had bought 3 books, and one of the others is outstanding. Don't bother with this one.