Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Why the anger?

I have been a biology major and am planning to attent Palmer Chiropractic next year. I made this decision because I know many M.D.'s as well as D.C.'s. I don't understand why books like this are written. Furthermore, I don't understand why any book would be written trying to insult traditional medicine. People should understand that there is a place for both, just like there is a place for podiatry, dermatology, oncology, and so on. No one can deny that the benefits of chiropractic, when applied to the appropriate ailment, are unparalleled. Books like these are counterproductive and unnecessary.