Instruct: Classify a given review as either positive or negative.
Query: A practical guide to the knife encounter

This is a very solidly written and clearly presented book on both the techniques and the mindset of the knife fighter. It does not baby the reader, but instead presents the mechanics of the knife fight in a way that can help you win. I got this when it came out and wore out the copy. Now I'm well on my way to wearing out my next copy.