Dr. Benjamin Bergen is a professor of cognitive science at the University of California, San Diego, and in his new book he explains why profanity is so appealing to us. Let’s face it, we all swear. Whether we’re happy or mad, uttering a four-letter word seems to be a natural occurrence for most of us. But why do we swear, even when we know we’re breaking cultural taboos? Why are some words off limits in certain countries or deemed offensive in past centuries but are considered perfectly tame in others? What does all this g*ddamn swearing tell us about our language and our brains? Bergen has the answers as he illuminates the controversial and complex nature of profanity and its relationship on our culture.