Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great book needs a proof reader

As with all things in life no one is perfect. The material detailed in the book is dead on the money from what I can see. On the other hand the book becomes a slow read when poor grammar as well as lack of works cause you to re-read the sentence to render the true meaning of what he is saying. Having said that the author is without a doubt the master of his world when it comes to CNC. Maybe version 4 will see the grammar rectified and smoother reading as a result. Then perfection will exist. One must also remember that the author may write the pub but it's up to the proof readers to proof and edit the book, so once again my hat goes off to the author and his knowledge of the subject that we are all trying to master.