Sometimes social engineering can be as easy a nudging people in the right direction by etching flies in urinals. Sorry, what? New York Times
The flies images of flies, actually were etched in the porcelain near the urinal drains in an experiment in human behavior.
Images of flies in airport urinals have taught a lesson about human behavior, says Richard Thaler, the behavioral economist.
After the flies were added, spillage on the mens-room floor fell by 80 percent. Men evidently like to aim at targets, said Richard Thaler of the University of Chicago, an irreverent pioneer in the increasingly influential field of behavioral economics.