This book presupposes that you are interested in moving about in safety, wherever you go, whatever you do. You don't want to have your options for moving about, traveling, or living a full life compromised or restricted by the Òwhat ifsÓ of city life. This book was written to help you do that. Not by eliminating the Òwhat ifsÓ from your life, and not by making you a ninja that can overcome every danger in the urban environment. This book will help you by showing you how to recognize the glaring danger signals that are not yet obvious to you, and how to respond when you start to notice them. These are not the fighting skills of the ninja; they are the mental skills the ninja used to avoid fighting.