Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One of the worst Library Science textbooks, if not the worst

This is the most boring, hardest to understand Library Science text I've had to read in my graduate career, and that's saying something. There's too much dense language, obscuring the meaning of what the author was trying to say. Consider, for example, that the author spends time talking about "metadata about metadata". The information in this book could be presented in a much more straightforward, concise, clear manner.