Instruct: Classify an Amazon review as either positive or negative.
Query: It's amazing . . .

It's amazing that this book was ever published given its many defects. The author vastly complicates rather than clarifying the subject. His analogies and illustrations are puzzling and misleading and the quality the editing is very hit or miss. I cannot imagine that anyone who buys this book, no matter whether they be an expert or a beginner would be at all satisfied. If you do buy it for curiosity's sake, buy it from Amazon so you can benefit from their no hassles return policy.