Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Waste of my time.

If you are looking for a book that covers poorly drawn conclusions and pitiful insite into the actual technology of DSL, then this is your book. I only hope my kids aren't forced to read this type of stereo instruction manual to better themselves in the world. The author has no technical knowledge of the subject matter at hand and I got the distinct impression that there was a technologist next to him spoon feeding him buzz words.