Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Poorly researchered amateur effort

This author of this book admittedly rented or bought a number of videos on Okinawa karate, supposedly watched the videos and then wrote a book based on his limited experience in Shotokan ryu, a Japanese off-shoot of the original Okinawan arts. The author make some fairly outrageous claims that he attempts to pass off as historically correct without one shred of primary research or evidence. It is outrageous that a publishing house would even bother putting this diatribe in print.Readers interested in Shotokan should immerse themselves in Harry Cook's book, The History of Shotokan. For more information on what Shotokan is missing as a martial art, I highly suggest the Gennosuke Higaki book: Hidden Karate, the true bunkai for the Heian Katas and Naihanchi.