Instruct: Classify Amazon reviews into positive or negative sentiment
Query: You'd better be a mathematician...

Put it this way: my Dad opening the book, thinking that it might be interesting, and said, "Yaaahh!!", not in ectasy but in agony. There's more notation in the book than words. It's terse. It's huge, and it's scary. I really hate this book. It gets worse as you go farther along. (Otherwise) simple concepts are made a mystery by the tricky wording and endless proofs. I'm sure that the trio made a lot of money off the book, yet another example of those who know that they can profit from the misery of others. JERRY TOOK THE FALL!!!!!!!!!!!!