The irony of "perverse incentive"

The phrase "perverse incentive" is often used in economics to describe an incentive structure with undesirable results, particularly when those effects are unexpected and contrary to the intentions of its designers.

The results of a perverse incentive scheme are also sometimes called cobra effects. This name was coined by economist Horst Siebert based on an anecdote taken from the British Raj. The British government, concerned about the number of venomous cobras in Delhi, offered a bounty for every dead cobra. Initially, this was a successful strategy; large numbers of snakes were killed for the reward. Eventually, however, people began to breed cobras for the income. When the government became aware of this, the reward program was scrapped. The cobra breeders set their snakes free, leading to an overall increase in the wild cobra population. READ MORE from Wikipedia