From the Ludwig von Mises Institute:
...Without further ado, let's examine a hypothetical island economy composed of 100 people, where the only consumption good is rolls of sushi.Reposted in "Krugman the Modern Day Bastiat?? C’est ne pas!"
The island starts in an initial equilibrium that is indefinitely sustainable. Every day, 25 people row boats out into the water and use nets to catch fish. Another 25 of the islanders go into the paddies to gather rice. Yet another 25 people take rice and fish (collected during the previous day, of course) and make tantalizing sushi rolls. Finally, the remaining 25 of the islanders devote their days to upkeep of the boats and nets. In this way, every day there are a total of (let us say) 500 sushi rolls produced, allowing each islander to eat 5 sushi rolls per day, day in and day out. Not a bad life, really, especially when you consider the ocean view and the absence of Jim Cramer.
But alas, one day Paul Krugman washes onto the beach. After being revived, he surveys the humble economy and starts advising the islanders on how to raise their standard of living to American levels. He shows them the outboard motor (still full of gas) from his shipwreck, and they are intrigued. Being untrained in economics, they find his arguments irresistible and agree to follow his recommendations.
Therefore, the original, sustainable deployment of island workers is altered. Under Krugman's plan for prosperity, 30 islanders take the boats (one with a motor) and nets out to catch fish. Another 30 gather rice from the paddies. A third 30 use the fish and rice to make sushi rolls. In a new twist, 5 of the islanders scour the island for materials necessary to maintain the motor; after all, every day it burns gasoline, and its oil gets dirtier. But of course, all of this only leaves 5 islanders remaining to maintain the boats and nets, which they continue to do every day. (If the reader is curious, Krugman doesn't work in sushi production. He spends his days in a hammock, penning essays that blame the islanders' poverty on the stinginess of the coconut trees.)...MORE