Placeholder Image

Subtitles section Play video

  • What’s better: Knowing the price of something or knowing with perfect information how much something should cost?

  • It's a trick question.

  • Suppose there are two farmers Al Trewis and Moe Cashferme. Each of them has 500 acres of land

  • that could grow either corn or soybeans. Suppose I ask what their plans are. Both of

  • them text back, “I don’t know.” Now suppose we borrowed a crystal ball from

  • some genie and we know everything. Among the things the crystal ball can tell us are that

  • Brazil has had a terrible summer with drought then late floods that wiped out 40% of their

  • soybean crop. It also tells us that new uses for soybean curd have pushed up consumer demand for

  • soy paste all over Asia. Meanwhile, corn crop yields have hit record highs all over the world and,

  • At the same time, several countries ended their corn-based ethanol programs leading to an extraordinary corn surplus.

  • Our first farmer, Al, has to decide what to

  • plant. Al never wanted anything for himself. All he cares about was doing what’s best

  • for all of humanity. He does research trying to decide which crop would be better for humanity

  • as a whole, but it’s hard for Al to determine what information is most relevant because

  • he doesn’t trust price information and the knowledge that he needs is too dispersed, too

  • specific, and too hard to learn. Now Al knows a lotbut still not enough.

  • He’s stuck at, “I don’t know.” So he makes a guess, plants corn. Al’s put

  • a tremendous amount of time and resources into his research instead of focusing on what

  • he’s good atrunning a farm. As a result, he doesn’t get much corn planted, has a

  • hard time selling the corn he does produce. He has to sell for very little and he ends up

  • bankrupt. Let’s look at Moe’s experience.

  • Since he cares only about profits, he focuses on prices. In early February, the price of corn futuresfalls sharply.

  • But soy futures indicate that prices for soy delivered in August should

  • be excellent. Why did this happen? Moe has no idea and he

  • couldn’t possibly care less. Moe sells a large soy futures contract to lock in the

  • high price and plants soy on every square inch of land that he owns. It’s a selfish

  • bet, one thatll make Moe a lot of money. Instead of trying to be an expert in all the

  • disparate subjects he’d need to master to have perfect information about the marketplace,

  • he just focused time and resources on running his farm. And the only other information he

  • used was prices. So he produced a lot of soybeans and did well for himself.

  • Which of the two did the right thing, the better thing for society? What would the genie

  • with the crystal ball have told us? The genie would have looked at the glut of corn and

  • the shortage of soy that made it so valuable and told us what people need is more soy.

  • But of course, there’s no such thing as genies in the real world. Information is too

  • dispersed, too complicated, to solve the "IDK" problem through research. There's just too

  • much to know. Fortunately, farmers don’t need a crystal

  • ball because prices do exactly what we were hoping that the genie would do. Farmers don’t

  • need to know why a price is high or low, and in fact no single person could possibly explain

  • it fully. But by growing the crop that produces the greater profit, farmers can produce the

  • crop that solves the shortage, meets the demand, and satisfies the requirements of innovation.

  • It’s impossible to attain perfect information about the entire marketplace, which is changing

  • all the time. Prices are a way of condensing all that information into one easily understood

  • signal. Almost like magic.

What’s better: Knowing the price of something or knowing with perfect information how much something should cost?

Subtitles and vocabulary

Operation of videos Adjust the video here to display the subtitles

B1 US corn moe soy crystal ball crop information

What Do Prices "Know" That You Don't?

  • 75775 1279
    Eating posted on 2015/01/25
Video vocabulary