Courses/CS 461/Museum of unintended consequences/Counterfeits
From CSWiki
According to Combating Counterfeit Drugs, a 2004 report by the US Food and Drug Administration,Forgeries and counterfeits fit the pattern for unintended consequences because they exploit a mechanism that has been installed in the world for purposes other than that used by the forgery. The mechanism was the recognition of a pattern as a way of identifying something. This mechanism wasn't directly installed. The pattern was installed as an identifying device. The pattern depended on pre-existing mechanisms that were believed capable of distinguishing a particular pattern from other similar patterns and that hence could be relied on to distinguish to entities that bore the pattern from other similar entities. Counterfeits exploit the combination of the mechanism and the application of that mechanism to particular patterns by fooling the recognition mechanism by mimicking the pattern.
This is not just a problem for counterfeit drugs and money, it is a problem for international trade in general. See, for example, Illicit: How Smugglers, Traffickers and Copycats are Hijacking the Global Economy by Moises Naim.

