One of the concepts of Appreciative Inquiry is to identify the positive deviants in a system and to find out what it is they are doing that works. The Positive Deviance Initiative has put this approach to the test in development projects since 2002. The concept is to identify the things/people that are successful in a system (the positive deviants), find out why they are successful and apply this learning broadly. The case study of ‘anti-girl trafficking’ in Indonesia provides a powerful example of how his approach can have stunning results.