 If you have learned some good things so far this year, send them along. I'd like to hear them. Our email is radio at Freakonomics.com. This episode reminded me of one we did a few years back called Reasons to be Cheerful. We spoke with the journalist John Tierney, who learned early on as a reporter that the best way to get a reader's attention was to focus on the dramatic, the frightening, the violent.