Surprisingly effective

The concept described in this book can be beneficial for anyone’s personal day to day life. If you practice it.

I had previously read a book describing a similar theory on decision making, however to my surprise this book summarized it in a short and effective manner through use of a scenario example.

Practicing this theory can prevent or minimize a bad outcome from conflict. Doing so may have saved me from receiving a bloody eye from a personal attack outside a train main station one morning a few months ago.

Whether the author really was a spy or not is unimportant, the concepts are.