It’s sometimes called the “dismal science,” but the weird and wonderful world of economics is anything but drab. As a clear-eyed observer of the world, Nobel Prize-winning French economist Jean Tirole can draw upon decades of economic expertise to illuminate common features of the world in a surprising, and often downright counterintuitive, light.
Tirole takes a look at the big topics that shape our present and will determine our future. How can the state and free markets best be brought together to guarantee growth, innovation and the common good? What makes the tragedy of the commons so tragic and what economists can learn from the humanities.
Our understanding of how the economy works is shaped by confirmation biases.
The way we see the world is shaped by our beliefs. We emphasize facts that confirm ideas we already hold, which is why we read newspapers that echo our own political views and seek out like-minded friends. Economics is no different; our preexisting beliefs mold our attitudes toward the facts.
This means we often don’t make the wisest economic decisions. Instead of looking at the evidence and making decisions accordingly, we look for simple rules that we can apply to every new situation. This approach can lead us astray because economics can be deeply counterintuitive.
This doesn’t mean that economics is purely about cold rationality. Think of a market. At its simplest, it’s just a mechanism to allocate scarce resources; buyers and sellers meet in the marketplace to consensually exchange goods and services.
But markets aren’t the infallible mechanisms they’re sometimes perceived to be. Not every good can be bought and sold freely, and some things, need to be more strictly regulated than others. Imagine, for example, a market in which babies could be traded for cash by parents (the sellers) and adopters (the buyers). It’s easy enough to envisage both parties reaching a mutually beneficial agreement.
But here, economists would raise an objection. From their point of view, this exchange fails because it neglects the interests of a third party, namely the baby. This kind of market failure is the result of what economists call an externality – the cost of an exchange borne by a third party who can’t consent to the exchange.
And that’s where regulation comes in. It’s an attempt to safeguard the interests of all parties to an exchange, whether they’re those of babies, elephants or the environment.
Economists try to make the world a better place by providing insights for policymakers.
What exactly is it that economists do? Lots of things in fact, but two roles stand out. Because they’re often ensconced in the ivory towers of academia, one of economists’ most important tasks is contributing to our knowledge of the world. But they also have another, less theoretical, role: economists try to make the world a better place by providing insights that policymakers can act upon.
That means economists often play an important part in public debates. Because knowing about budgets is pretty much in economists’ job description, they’re ideally placed to help us figure out the most efficient – and least costly – way of allocating resources. So how do economists go about tackling problems? They rely on models to analyze actors’ behavior. Two theories are particularly suited to this purpose.
The first is game theory. This is essentially a way of modelling the behavior and strategies of self-interested actors who are also interdependent and affected by each other’s actions. A famous example is the “prisoner’s dilemma,” a thought experiment that looks at how two prisoners will behave without knowing what the other is doing – will they betray each other in search of a more lenient sentence or keep quiet?
Game theory asks two questions about this kind of situation: First, what’s the best decision for the individual? And second, what’s the best decision for multiple parties collectively? Another helpful tool is information theory, which centers on the way individuals make use of private information.
Analyzing private information lets economists make informed predictions about individual behavior. And knowing what people are likely to do in certain situations is a great basis for making policy recommendations.
Economics has a lot to learn from the social sciences and humanities.
Economic theory begins with a fairy tale. Once upon a time, it says, there was the homo economicus. This fabled character from economics 101 textbooks is the self-interested and rationally calculating decision maker. But as anyone who’s ever felt the lure of unhealthy junk food knows all too well, humans just aren’t perfectly rational creatures.
What else drives us then? One place economists can look for answers is in the social and human sciences. From philosophy to law, history to psychology or sociology to political science, all these disciplines have one thing in common: they’re all concerned with what makes people, groups and organizations tick. Their attempts to get at the heart of the human condition have introduced us to a whole raft of characters to complement homo economicus.
Take psychology’s homo psychologicus. He’s far from rational, and psychologists are largely interested in exploring the hidden drives that lead him to make decisions that sacrifice his long-term interests for short-term pleasures. Why, for example, does he spend all his money today rather than putting a portion of it away for a rainy day or his retirement? Psychology is also useful if you want to understand behavior that isn’t self-interested. What makes us empathetic and capable of giving without expecting anything in return?
Sociology adds another character to our expanding cast – homo socialis. What can an economist learn from this figure? Well, economies are social systems that depend on values like trust. Because we don’t always have access to all the information we need to make informed decisions, we often buy things because we trust the seller or a recommendation from someone else.
But it’s not just trust that underpins economies. If you want to understand why someone obeys the rules and pays their taxes (or doesn’t), it’s useful to get a handle on another character, homo juridicus, since behavior is shaped both by legal and social norms.
Neither the state nor the market is perfect and they both need each other to function properly.
The market and the state are frequently depicted as belonging to entirely separate spheres. But contrary to what is often said about them, they don’t compete with each other; in fact, each needs the other to work properly.
That’s because they do different things. Take markets. Without them, there’d be little competition or innovation. Yet without the state and the rule of law, markets would descend into anarchy. After all, businesses need protecting and contracts have to be enforced for a market to work at all. And, as we’ve seen, it’s the state that provides a regulatory oversight that protects the common good when markets fail.
But it’s not just markets that occasionally fail – states can too. Consider politicians. What they want above all else is to be elected or reelected, which is logical enough since they’d be unable to do anything if they didn’t have power. But that search for approval at the ballot box can also distort their decision making. This is a common theme on the campaign trail, when politicians exploit voters prejudices or ignorance rather than try to change people’s minds.
A more dangerous practice is pandering to special interest groups. Promising groups of voters what they want is a great way of getting them to turn out come election day, but it’s not necessarily a brilliant way of crafting economic policy. Promises are easy to make and hard to deliver on.
That’s especially true in the case of spending commitments, because their true cost can be difficult to calculate. Investing in creaky public transport infrastructure might sound like a no-brainer during a stump speech, but what if the state needs to borrow money to fix the transit system? The final bill can easily exceed the rough-and-ready arithmetic of politicians casting around for votes!
Businesses face a similar quandary when it comes to decision making. Who gets to make the decisions and why? Every business has multiple stakeholders – groups affected by how a business operates. Balancing the interests of different stakeholders can be a tricky matter.
Take two stakeholders found in virtually every business: investors and employees. If the former dictate policy, they might be tempted to ignore the interests of the company’s workers and end up slashing jobs in search of bigger profit margins. Conversely, if employees get the upper hand, they might also let short-term gains get in the way of long-term strategies and simply raise their own wages while leaving too little for reinvestments.
The state is at the heart of economic life, but it’s the market that drives innovation.
We’ve already seen how the state and the market are like the yin and yang of economic life, two interdependent and complementary forces in a larger system. So let’s take a closer look at their relationship. Paradoxical as it may seem, the state is the at the heart of economic life in every market economy, because it plays three distinctive and important roles within the market.
The first role is one of public procurement. Here, the state becomes a buyer of goods and services for everything from the construction of public buildings, roads and railways to the running of hospitals. This has the beneficial knock-on effect of boosting competition among suppliers.
But the state isn’t only part of the market – it’s also above the market. As a legislative and executive power, it sets the parameters of the market economy by issuing permits and licenses for things like taxi firms, supermarkets and even airline landing rights.
In that role, the state is also a referee of markets. The state is an observer of the play of economic forces, intervening to make sure the rules of the game are upheld and dominant players don’t abuse their power. So what’s the market’s role then? Open competition in free markets provides several goods that the state on its own can’t.
Take affordability. Monopolies can charge whatever they want for their services because customers can’t go anywhere else. Unsurprisingly, prices are often sky high. Competition means that suppliers have to convince customers to buy their services rather than someone else’s, and lowering their prices is often the most convincing argument of all!
But if you’re a supplier and you want to lower your prices, you’ll also have to find a way to lower your costs. Innovation and efficiency are the side effects of suppliers’ bid to offer competitive prices.
Digitalization brings new opportunities and poses new problems.
We’re already living in the digital economy. We shop and bank online, catch up on news and gossip on our smartphones and stay in touch with friends on Facebook. What the platforms of the new digital economy all have in common is that they’re examples of two-sided markets, markets in which buyers and sellers interact via an intermediary.
Globalization has made the world a smaller place, which means that buyers and sellers from every corner of the earth can exchange goods and services. But as the world has gotten smaller, the global economy has gotten a lot bigger. So how do we decide who to do business with?
Two-sided markets like Amazon make this a lot easier. By providing a digital marketplace, they bring buyers and sellers together wherever they are. But unlike traditional marketplaces, these platforms also act as regulators to ensure that transactions are fair and smooth.
But there’s a catch. Digital platforms only work when we trust them not to misuse our personal data. How can you tell which websites are safe? The answer, troublingly, is that you often can’t. Even large companies have been subject to massive credit card theft in recent years.
Intellectual property rights are a necessary evil in the struggle for greater innovation.
Innovation is the motor that keeps the economy humming and the wheels of economic growth spinning. But safeguarding innovation requires intellectual property rights. That might seem like a paradox. Surely it’d be better if innovations were free for all to use and improve upon, right?
Actually, no. The problem is one we’ve encountered before: free-riding. If every innovation were publically available for all to make use of, there would be little incentive for anyone to devote resources to the research and development that underpins all innovation.
That’s why it’s important to protect the income of innovators. By guaranteeing that they’ll profit from their work, tomorrow’s innovators are given an incentive to continue their often difficult and time-consuming work today. That’s where intellectual property rights come in.
When the state enforces intellectual property rights, it’s effectively granting the creator of an innovation an exclusive license to market and profit from a given product. So, intellectual property rights and innovation go hand in hand. But this isn’t the only way of boosting innovation; various governments have experimented with alternative models.
In the seventeenth and eighteenth centuries, for example, both Britain and France granted prizes to innovators in public competitions. Once the winner had collected his award, the innovation was made accessible to everyone. While this was a great incentive for innovators to compete amongst themselves, there was also a downside. Innovation is usually unpredictable – no one knows what tomorrow’s technology will look like.
But if you want to give someone a prize, you have to know what criteria you’ll be using to judge his submission; this condition, in turn, narrows the field of innovation. Companies have also experimented with novel approaches. One idea is patent pools, an agreement among competing firms in the same industry to jointly control patents that they can all use. That is known as coopetition, a portmanteau of the words “cooperation” and “competition,” and has been used to try to lower the price of innovations.
The science of economics is, like the world it attempts to describe, complex. There are rarely clear-cut rules that can be applied to all situations; instead, there are trade-offs between different and equally valuable goods. Failure is often a result of not striking the right balance, whether it’s in the sphere of the state or markets. Getting it right requires an understanding of economics, a discipline that can help us achieve the common good when it comes to the most urgent issues of the day, like climate change and the transition to a digital economy.