Instruct: Classify the given review into positive or negative sentiment.
Query: Dont't buy this book if...

If you want to learn what Aspect Programming is, don't buy this book. If you want to know how to use Aspect Programming, don't buy this book. If you want to know what Aspect Programming is for, don't buy this book. This is a collection of ehem... "high level, systemic" articles, usually not top quality about... yes, good question, about what?... Buying this book was total waste of monies, several attempts to read was total waste of time. No, this book was not too difficult for me; I am computer engineering professor