Instruct: Classify Amazon reviews into positive or negative sentiment
Query: waste of money (and time)

A complete waste of money. Though the book contains some interesting ideas, it is very, very, very wordy. Everything is explained ve-e-ery slowly and repeated a few times. But when the narration approaches a really interesting point, the author switches to a different topic, leaving the interesting point for later. If the book were 1/10 of its size, it might be a good recreational reading. However, in its current form, it is extremely boring, nearly unbearable.Could not read it past a couple of chapters, though tried several times. Trying to skip a few chapters did not help: it is dead boring all the way to the end.