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September 7, 2021 Reading Time: 6 minutes

Recently, I asked my students to submit questions they had about Principles of Macroeconomics. A lot of students asked, “What’s the major takeaway?” I will be thrilled if students understand three I’s: Incentives, Institutions, and Intentions. Specifically, they should know…

  1. Incentives Matter.
  2. Institutions Matter.
  3. Intentions Don’t Matter.

Obviously, I write “Intentions Don’t Matter” with tongue in cheek–I sincerely hope that people do things out of beautiful motives, but someone who studies economics should conclude that intentions are overvalued. So what do we mean by these three I’s?

Incentives are rewards and punishments, and they change people’s actions. As the economist Steven Landsburg has written, “Most of economics can be summarized in four words: ‘People Respond to Incentives.’ The rest is commentary.” This does not mean that people are (or should be treated like) trained seals doing tricks for fish. It simply says that people will do things that bring them net benefits and fewer things that load them with net losses. “Incentives matter” suggests that changing people’s incentives will change what they do. We don’t need to know why, and we don’t need a theory of cognition to make reasonable predictions about how people will change what they do when circumstances change. A policy like the National Flood Insurance Program that makes it less risky to build a house or a business in a disaster-prone area by making taxpayers financially responsible for the damages encourages people to build houses and businesses in disaster-prone areas.

When we discuss incentives, we emphasize profits, losses, and prices. Someone earns a profit by assembling resources and turning them into something that is more valuable than anything else that could have been done with those resources. Someone incurs a loss by assembling resources and turning them into something that is less valuable than anything else that could have been done with those resources.

Think about someone running an artisan bakery. She needs flour, water, yeast, and other ingredients to make the bread. She needs an oven to cook the bread. She needs a store from which to sell the bread. She needs time to shop, bake, order supplies, keep the books, and take care of the seemingly endless barrage of tasks that comes with running a small business.

Everything she uses can be used for something else. Someone could be drinking the water she uses to bake bread. The building from which she operates could be a shoe store. Her oven could have been installed in a restaurant on the other side of the world. Instead of running her own business, she could be doing something else.

How does she know if she is choosing wisely or wastefully? Market tests are crucial, and people vote for or against her operation with their every action. Someone who comes into the bakery and buys a few loaves of bread votes with his money and says, “Making loaves and having them available at 8 AM on a Saturday morning in this location was the best way to use these resources.” Someone who sees the bakery and keeps walking or who simply sleeps in votes with his money, too, but in this case, he says “I don’t think making loaves and having them available at 8 AM on a Saturday morning in this location was the best way to use these resources in light of all the alternatives.”

The baker learns if she is choosing wisely or wastefully by adding up all the dollar votes for her wares and comparing them to the dollar votes for the alternatives. If she earns a profit, she gets a pat on the back from the invisible hand and an important signal saying “Do more of that.” If she incurs a loss, she gets a smack in the face from the invisible hand and an important signal saying “Do less of that.” In getting and spending, people don’t lay waste their powers. They decide, as a group, what is to be done.

Prices are crucial: every price represents a momentary social consensus about a good’s best use. The consensus is momentary because people act on a steady stream of new ideas about how to use what. A quick glance at Amazon suggests I could get organic whole-wheat flour for fourteen cents a pound. Right now, someone, somewhere might be ordering organic whole-wheat flour for fourteen cents a pound because she thinks she can use a bunch of other assets to turn each fourteen-cent pound of flour into twenty cents worth of baked bread. I, on the other hand, am abstaining from buying the flour because at this very moment I think the best use of my time and money is “saving in anticipation of retirement or emergency” rather than baking bread. The price of fourteen cents a pound transmits crucial information, and both the aspiring baker and the economist act on that information with reference to the rest of their knowledge about “the particular circumstances of time and place.”

Prices have to be reliable if people are going to get the right profit and loss signals. That’s where institutions come in. Institutions are rules: they are, as the economist Douglass C. North defines them, 

“the humanly devised constraints that structure political, economic, and social interaction. They consist of both informal constraints (sanctions, taboos, customs, traditions, and codes of conduct), and formal rules (constitutions, laws, property rights).”

They matter because, quoting North again, they “provide the incentive structure of an economy; as that structure evolves, it shapes the direction of economic change towards growth, stagnation, or decline.” Good institutions give people incentives to make things and accomplish their own goals by helping other people accomplish theirs. Bad institutions give people incentives to hurt people and break things. Compared to the general public, economists tend to be relatively enthusiastic about free markets because they give people good incentives. In a free market, goods and services are put through the refining fires of voluntary exchange. Wood, hay, and stubble tend not to last long, and gold, silver, and precious stones tend to endure.

This leads to a remarkable fact about free markets. They encourage people to help one another even if they don’t intend to. This was one of Adam Smith’s most important insights. As he wrote

“It is not from the benevolence of the butcher, the brewer, or the baker, that we expect our dinner, but from their regard to their own interest. We address ourselves, not to their humanity but to their self-love, and never talk to them of our own necessities but of their advantages.”

In other words, you don’t get the baker to feed us by storming into her shop and declaring “I’m hungry.” You’re not the only hungry person in the world, and besides, she has a lot of responsibilities to her family, her friends, her church, herself…the list goes on and on. You get the baker to feed you by making it worth her while–by providing something for her that helps her achieve her own goals. A three-year-old saying “I’m hungry” and expecting his parents to feed him is one thing. An able-bodied adult saying “I’m hungry” to another able-bodied adult (who might be running a bakery so she can feed, clothe, and shelter a three-year-old at home) and expecting them to feed him is something else entirely.

Remarkably, by pursuing her own interests–the care and feeding of her family–the baker helps other people care for and feed their own families. When the baker is up before dawn baking the bread I will buy later that morning, she probably isn’t thinking about me and my hungry family. She is thinking about herself and her hungry family. Similarly, when I buy the bread, I’m not really thinking about her and her hungry family. I’m thinking about myself and my hungry family. The free market brings us together and makes it possible for us to take care of one another’s families as a part of taking care of our own. We might not intend to help one another, but we help one another nonetheless.

History, the newspaper, and your social media feeds are filled with examples of people dutifully and earnestly paving the road to hell. Just because you mean to help people doesn’t mean you will help people. Someone might earnestly wish to help people, but his efforts might “promote an end which was no part of his intention” and which too often hurt exactly the people we want to help. Good intentions aren’t necessary or sufficient for good results, and we can point to example after example of policies people make because they want to help others that end up doing more harm than good. Tariffs on cherries. Tariffs on European booze. Tariffs on sugar. Minimum wages. The Transportation Security Administration. Rent control. Socialism. Immigration restrictions. Regulation. Price-gouging laws. It’s a very long list.

The economic way of thinking has a lot of implications, it covers a lot of ground, and it’s easy to lose sight of the fundamentals amid a flurry of graphs, definitions, equations, examples, and exceptions. Fundamentally, though, economics is the study of human action and its unintended consequences, and if you take away three Is–Incentives Matter, Institutions Matter, Intentions Don’t Matter (as much as you think)–then you are on the road to wisdom.

Art Carden

Art Carden

Art Carden is a Senior Fellow at the American Institute for Economic Research. He is also an Associate Professor of Economics at Samford University in Birmingham, Alabama and a Research Fellow at the Independent Institute.

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