Why are we fooled by these devices? Because they appeal to our emotions rather than to our reason. They make us believe and do something we would not believe or do if we thought about it calmly, dispassionately. In examining these devices, note that they work most effectively at those times when we are too lazy to think for ourselves; also, they tie into emotions which sway us to be “for” or “against” nations, races, religions, ideals, economic and political policies and practices, and so on through automobiles, cigarettes, radios, toothpastes, presidents, and wars. With our emotions stirred, it may be fun and infinitely more to our own interests to know how they work.