Monday, May 8, 2017

Communism's Unintended Consequences

Karl Marx’s famous slogan is “from each according to their ability, to each according to their need.” That’s a good way of expressing the spirit of communism, but think about what happens once we apply the first lesson of economics. What is punished? Hard work, because the guy who makes twenty widgets per day gets paid the same as the guy who makes just five widgets per day. What is rewarded? Shirking, because you’ll make a good wage even if you don’t do any work. Communism punishes hard work and rewards shirking. So we predict that communism damages the work ethic and the economy along with it.

Sure enough, that’s exactly what happened. John McMillan explains in Reinventing the Bazaar (2002, p.94-110). In communist China, peasants put Marx’s slogan into practice. They worked the fields collectively and they each got an equal share of the harvest. The peasants who worked hard got just as much food as the ones who shirked on the job. Needless to say, the outcome was a lot more shirking! And since no one wants to be the only sucker, even the hard workers started shirking once they realized that everyone else was doing it. The Chinese Anhui province was known as the granary of China, but after communism the people could not even feed themselves. 

Things got so bad that in 1978 people from the Xiaogang village met in secret. They decided to divide the commune into privately owned lots, one lot for each villager. In other words, they switched from communism to capitalism. One farmer explained, “You can’t be lazy when you work for your family and yourself.” Sure enough, their harvests skyrocketed. The people weren’t poor anymore. Neighboring villages followed suit and their harvests skyrocketed too. Luckily the villagers began their experiment at a time when reformers were challenging the old guard of the Communist party; otherwise they might have been killed or imprisoned. Instead the reformers let the experiments continue and by 1984 there were no communes left. 

A Free and Equal Kingdom


Part I: Incentives Matter

  1. People Respond to Incentives
  2. The Law of Unintended Consequences
  3. Communism's Unintended Consequences
  4. More Unintended Consequences
  5. Liberals and Incentives
  6. Conservatives and Incentives
  7. Get the Data
  8. Incentives: Wrapping it Up

Part II: Supply and Demand



  1. Parable of the Price Gouger
  2. The Three Virtues of the Price System
  3. Middlemen and speculators


Part II: Market Failures

Friday, May 5, 2017

The Law of Unintended Consequences

People do not always understand the first lesson of economics and that almost invariably means that they will run afoul of the law of unintended consequences. The economist James Gwartney has one of my favorite examples in his book Common Sense Economics

In the former Soviet Union, managers and employees of glass plants were at one time rewarded according to the tons of sheet glass they produced. Because their revenues depended on the weight of the glass, most factories produced sheet glass so thick that you could hardly see through it. The rules were changed so that managers were compensated according to the number of square meters of glass they could produce. Under these rules Soviet firms made glass so thin that it broke easily.



The Soviet Glass factory is a great example of central planning run amuck, but it raises a puzzle. Capitalist countries have glass factories too, and they have to pay their workers somehow. Why do glass factories work better in capitalist countries? How do capitalists pay their workers so as to avoid the law of unintended consequences? We’ll cover this later in a later post, but you may want to start thinking about it now.

Thursday, May 4, 2017

People Respond to Incentives

"Most of economics can be summarized in four words: people respond to incentives. The rest is commentary."


– Steven Landsburg, The Armchair Economist


Parents and pet owners, already know the first lesson of economics – that people respond to incentives. Behaviors that are rewarded are done more often. Behaviors that are punished are done less often. My dog Josh likes to sneak food from the kitchen counter, but he (usually) doesn’t do it because he knows I’ll scold him. And if I tell Josh to sit, he’ll sit because he knows he’ll be rewarded with kind words and a scratch behind the ears. Incentives are the first clue to understanding human nature. Whenever you want to predict the effect of a new law or government regulation, the first thing you should ask yourself is which behaviors are punished, and which ones are rewarded. It’s a pretty safe bet that people will do less of whatever is punished, and more of whatever is rewarded. 

Sometimes people understand the first lesson of economics. The goal of “sin taxes” on cigarettes and alcohol is not to raise money for the government, but to change behavior. Smokers are punished with higher prices so they will smoke less. Conversely, we subsidize (reward) donations to charity by giving people tax breaks. Donating to charity is a good behavior that we want people to do more often. That’s why economists say, “you get less of what you tax and more of what you subsidize.” 

Free and Equal Kingdom: Overview