5 The Price System

I, Rose

How is it that people in snowy, chilly cities have access to beautiful, fresh roses every February on Valentine’s Day? The answer lies in how the invisible hand helps coordinate economic activity, Using the example of the rose market, this video explains how dispersed knowledge and self-interested actors lead to a global market for affordable roses.

A Price Is a Signal Wrapped up in an Incentive

Markets Link the World

In this video, we discuss how markets link people and places all over the world. We’ll take a look at production and consumption markets and, importantly, the role that prices play in it all. Following up on our example of a rose, we take a look at other global products such as the Apple iPhone. Where is the iPhone made? It’s produced by thousands of people all over the world, working in cooperation in order to make one product that many of us enjoy. Join us as we observe the invisible hand in action. ...

The Great Economic Problem

In this video, we discuss how different markets are linked to one another. How does the price of oil affect the price of candy bars? When the price of oil increases, it is of course more expensive to transport goods, like candy bars. But there are other, more subtle ways these two markets are connected. For instance, an increase in the price of oil leads to an increase in demand for oil substitutes, like ethanol. And when the supply of oil falls, oil should shift to higher-valued uses. But, which uses? How do we decide where to use less oil? This brings us to the great economic problem: how to most effectively arrange our limited resources (scarcity of resources) to satisfy our needs and wants. Which approach — central planning or the price system — is better at solving this problem? Join us as we explore this question further. ...

Information and Incentives

What does an increase in the price of oil tell us? What does it signal? And how do we adjust to that signal? The price of oil gives users of oil an incentive to respond — by using less oil or substituting lower-cost alternatives for oil.

The key here is that we let people decide how to most effectively allocate the use of goods and resources. To solve the great economic problem, we need to solve information and incentive problems.

In this video, we take a look at how Nobel Prize-winner Friedrich Hayek described the price system and its approach to solving the information problem. We’ll also continue with our example of oil to show how the price is equal to the marginal value of oil or the social opportunity cost. ...

Speculation

Speculation is often considered to be morally dubious. But, can speculation actually be useful to the market process? This video shows that speculation can actually smooth prices over time and increase welfare.

Speculators take resources from where they have low value and move them through time to where they have high value. We also take a look at speculation in the futures market — for instance, can orange juice future prices help predict Florida weather? Let’s find out. ...

Prediction Markets

We’ve discussed how prices are signals that convey information about goods — but can prices also convey information about events and even predict the future? For instance, can we predict Middle East politics based on the price of oil futures? Or predict the consequences of climate change based on the price of flood insurance in coastal cities? Of course, prices in these examples are imperfect predictors as there are many factors that influence the price.

We also take a look at some markets that have been designed to make predictions, like the Iowa Electronic Markets, and a specific example of how it was used to predict the outcome of the 2008 presidential election between John McCain and Barack Obama. What about the Hollywood Stock Exchange, where traders buy and sell shares and options in movies and music? What did the studio learn about its casting choices for the film, “50 Shades of Grey”? We discuss these examples and more in this video. ...

The Price System

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