Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too many pictures. Not enough explanation

While Mr. Hochheim may be an accomplished martial artist, and could probably slaughter me in a knife fight without breaking a sweat, this book is sub-par, even by knife combat book standards. This is another case of someone who is an expert in the area that they write about but who lacks the writing abilities to fully convey the concepts they present. Many of the illustrations in this book are handed to the reader without almost any written explanation of the techniques. The author seems to expect the reader to draw the necessary information from the pictures alone. For a combat expert this is fine, but for the novice this is less than satisfactory and perhaps even dangerous, if the student tries to perform the techniques in a real fight without a real understanding of how they should be properly executed.