Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing

The author of this book must have exhumed his notes from an old audio-lingual behaviorist-based approach wherein the student is supposed to assume the role of a parrot imitating an instructing guru or vocalizing to a tape (not provided but available at extra cost, I'm sure)in order to learn a rather complex Asian language. There is an absence of linguistic or useful models designed to help the student find his or her way through the labyrinth of sounds and symbols that confront the beginner in Vietnamese. Nothing is explained and everything is inferred that the mysteries of the language will be unlocked by interaction with the guru. All in all, a disappointing and completely unsatisfying text left over from the pleistocene of language instruction where people believed that Skinner and Bloomfield could teach language. [HINT: If you do buy it, make sure you can get your money back!]