"The reason John Edwards's adultery has more zing in our heads than a dry policy dispute that could cost taxpayers billions of dollars is that the human brain evolved in a period where there were significant suvival advantages to finding out the secrets of others. Since humans lived in small groups, the things you learned about other people's character could tell you whom to trust when you were in a tight spot."
Why Fluff-Over-Substance Makes Perfect Evolutionary Sense
by Shankar Vedantam
http://www.washingtonpost.com/wp-dyn/content/article/2008/08/24/AR2008082401662.html?hpid=sec-nation
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