There is a famous joke about the tendency of economists to consider their chosen field akin to the natural sciences: a physicist, a chemist, and an economist are stuck on a desert island. A can of beans washes up on the beach. The physicist devises a mechanism using twigs and rocks to attempt to force open the can, but after several hours with no results, during which the economist sits and smugly smiles, the physicist gives up. The chemist attempts to extract some sort of substance from plants on the island to melt the can. The economist continues sitting and smiling arrogantly as the chemist also fails in his efforts. “What?” the physicist and chemist say, “do you have a better plan?” The economist stands and walks proudly towards the can on the beach: “Let’s assume we have a can-opener.”
This joke is often told by economists to economists at economic conventions or by economics professors to economics students during economics class, which was where I first heard the joke. Yet the same economists who make this joke forget their own lack of hard science credentials when they make predictions; and non-economists seem to forget the incorrectness of the last prediction when they hear the next prediction. In times of trouble, the poor track record of economists at predicting the future is never called into question, and political leaders often blindly surrender national sovereignty to “experts.”
I undoubtedly believe that central economic planners are capable of coordinating and herding hundreds of millions of people to some greater economic purpose by simply printing money and increasing government spending, but I also believe that the negative consequences of these policies usually outweigh their beneficial effects.
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