It could not be happening because this sort of thing did not happen. Any contradictory evidence could be safely ignored.

Terry Pratchett, Jingo

Ever wonder how often you think that way? or some similar way? Anything outside of the immediate seems to be so easy to dismiss.

little security bit

http://www.kiplinger.com/personalfinance/magazine/archives/2006/11/mystory.html

I am guessing all the CJ majors out there will be saying "well DUH!" to this but I thought it was interesting that there are much fewer pickpockets in the US based on ENFORCEMENT. Generally when I talk about things like this prevention is the accepted way to go.