Editing Perverse incentive (section)

== In literature ==
In [[Autobiography of Mark Twain|his autobiography]], Mark Twain says that his wife, Olivia Langdon Clemens, had a similar experience:<ref>{{citation |author=Mark Twain |title=Mark Twain's Own Autobiography: The Chapters from the North American Review |pages=151–152 |year=2010 |editor=Michael J. Kiskis |publisher=University of Wisconsin Press |isbn=978-0299234737 |author-link=Mark Twain}}</ref>
{{quote|Once in Hartford the flies were so numerous for a time, and so troublesome, that Mrs. Clemens conceived the idea of paying George a bounty on all the flies he might kill.  The children saw an opportunity here for the acquisition of sudden wealth. ... Any Government could have told her that the best way to increase wolves in America, rabbits in Australia, and snakes in India, is to pay a bounty on their scalps.  Then every patriot goes to raising them.}}