Chapter 1 mentioned several of the most important principles of logical reasoning, and it briefly analyzed examples of good reasoning. Learning from examples of good reasoning and applying the principles of logic are defenses against the forces of irrationality. However, the path to the truth and to the best decision is easier to follow if you’ve been there before. That is why this chapter explores deceptive techniques used to get people off the path. You'll learn about the techniques of deception used by those who are after your mind or your money. The more you know about the techniques of deception, the better you'll be able to defend yourself. Hopefully you won’t use what you learn here to victimize other people.