In his new book, Cognitive Surplus: Creativity and Generosity in a Connected Age, New York University scholar, Clay Shirky, argues that when we design systems that assume bad faith from the participants, and whose main purpose is to defend against that nasty behaviour, we often foster the very behaviour we're trying to deter. People will push and push the limits of the formal rules, search for every available loophole, and look for ways to game the system when the defenders aren't watching. By contrast, a structure of rules that assumes good faith can actually encourage that behaviour.