I was listening to a thought-provoking interview yesterday, about the science of pleasure. Why do we enjoy some things that at first don't look like they would be very enjoyable. According to the interviewee, we enjoy scary rides or movies and horrible, sometimes even a bit disgusting, stories because they're a way for us to practice what would be dangerous or traumatic experiences on a small scale in a safe environment. It would be a way for us to prepare for when these situations come true.

If you'd like to hear the whole interview, you can podcast it here : Science Friday - How Pleasure Works