Famous showman and circus owner P.T.Barnum is best known for his famous line "There's sucker born every minute." He used every opportunity he had to prove the truth of his proverb. For example, when his exhibition of exotic animals and odd human beings became popular, he found that people tended to linger inside. This made it impossible for new paying customers to enter. Barnum solved the problem by hanging a large sign on the wall reading "THIS WAY TO THE EGRESS." Those following the sign found themselves out on the street. Egress is another word of exit. Barnum was right.