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

This book seems to be emblematic of the problems many technical textbooks suffer. Whole chapters and series of chapters seem to be there just to take up space. Entire sections of redundant or extraneous information, or no information at all, can be found everywhere. The useful information in this 1400-page book could probably be expressed in 100 pages. It would be much easier to understand in that format as well, since extracting it from this morass is nigh-impossible. Useless drivel is expressed in tedious detail again and again, while actual useful information is in one or two obtuse sentences that are easy to miss or misunderstand.