Here’s another example: in World War 2, US paratroopers had a problem with the fact that, allegedly, one in twenty chutes failed in some way. The soliton was to require the packers and inspectors to regularly jump out of airplanes using parachutes chosen at random from the store. The quality of packing then rose to 100 per cent and stayed there. “The packers are all jumpers,” explained on NCO to Stars and Stripes magazine: ” We try to have each man jump once a month. That’s a pretty food way to keep them honest on the tables.”
Excerpt from: One Step Ahead: Notes from the Problem Solving Unit