My favorite teaching tool is a fable based on a tale told by Professor James Ingram of North Carolina State University. It’s the tale of a brilliant entrepreneur who invented a new technology for turning grain into cars. The entrepreneur built a factory by the sea, surrounded its inner workings with secrecy, and commenced production.

Consumers were thrilled to learn that the new cars were better and cheaper than anything Detroit had to offer. Midwestern farmers were thrilled when the factory ordered vast amounts of grain to feed into its mysterious machinery. There was indeed dismay among those autoworkers who had been trained in the old methods, but there was also a general recognition that technological progress, even when accompanied by growing pains, is on balance a very good thing.

One day an investigative reporter managed to locate a disgruntled employee who revealed the entrepreneur’s great secret. The vast factory was hollow. The back wall opened out onto a shipping dock. Grain came in the front door and went out the back, where it was sent to foreign countries in exchange for cars.

The shock of these revelations transformed the entrepreneur from a public hero to a public villain.

– Steven E. Landsburg, Fair Play, pp. 12-13