Title: do not touch
Product review: the book is filled with typo. Given that this is third edition, the author doesn't seem to pay much attention to the hw. I was a TA for this class, and it took me some times to figure out what i did wrong because the hw questions are wrong. The theories in this book can only be applied in the context of the book's examples; some of these theories are not general and can't be applied in a broad sense.
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