The beautiful law of unintended consequences

Resultado de imagen de ROBERT KURZBANAccording to the guide on my walking tour of The Rocks neighborhood in Sydney, Australia, when the plague hit the city around 1900 a bounty was placed on rats to encourage people to kill them, since it was known that rats bore the fleas that communicated the disease to humans. The intent of the bounty was plain enough: reducing the number of rats to reduce the spread of the plague. An unintended consequence, however, was that residents, tempted by the rat bounty, began breeding rats… *

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