Name: 市場、効率性、価格シグナル。クラッシュコースの経済学＃19 (Markets, Efficiency, and Price Signals: Crash Course Economics #19)
Uploaded: 2021-01-14T06:29:26.000Z
Duration: 11 min 1 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Jacob: And I'm Jacob Clifford, and this is Crash Course Economics. Today we're gonna talk about a lot of stuff.

Adriene: Everything from blundering planned economies to heartless free markets from price

gougers to indolent apparatchiks. But it's not all bad news. We're going to learn that

price signals indicate skinny jeans are on the way out.

Adriene: We've talked about the difference between free market economies, where supply

and demand determine what gets produced, and centrally planned economies, where government

agencies decide what gets produced. Today we're gonna expand on that, and discuss why

competitive markets have been more successful at providing most of the things people want.

Central planning has some upsides. Everyone who wants a job has a job, and production

aims to meet an idealized version of society's collective goals. But the reality of it has

been less ideal for consumers in those societies.

In the Soviet Union, central planners were focused on producing heavy equipment and military

hardware. There were shortages of consumer goods, like soap, sugar and electronics. It

turns out that people care more about smartphones and good coffee than they care about tractors.

And so countries like China and Cuba have moved away from large-scale central planning.

Jacob: The problem with central planning is that it's inefficient. Now, when economists

talk about efficiency, they're talking about a couple different types of efficiency that's

different than the efficiency that you might know.

The first is productive efficiency: the idea that products are being made at their lowest

possible cost. This means that there are no wasted resources and that raw materials, workers,

and machines are being used to their fullest potential.

Central planners in general, aren't that focused on cost. But in the free market an individual

business owner has an incentive not to be wasteful because they want to maximize profit.

In the words of Milton Friedman; "Nobody spends somebody else's money as carefully as he spends his own."

The second type of efficiency is called allocative efficiency This means that the things we're

producing are the things that consumers actually want. In other words, our scarce resources

are being allocated towards the things we value.

Let's say a company is producing only skinny jeans, now if they're not hiring too many

workers and if they're not ending up with a bunch of extra materials they're producing

at the lowest possible cost and that's productively efficient. The problem is they only make skinny

jeans. Even though the company might be productively efficient they're probably not allocatively

efficient. Consumers don't want only skinny jeans some want boot cuts. Central planners

are less likely to be allocatively efficient because they have a harder feedback about what people want.

Adriene: Free market producers of consumer goods collect a lot of data about consumer

preferences through stuff like market research. But they can also learn a lot about consumer's

wants by looking at prices. Economists call these price signals. Let's go to the Thought Bubble.

Okay, if people are paying high prices for skinny jeans, it tells producers "Society

wants more skinny jeans, start making them." If no one wants skinny jeans, producers start

Here's another example: tablet computers weren't really popular until apple introduced the

iPad. After that, boom! The market exploded. In fact, I know about 11% of you are watching

this video on a tablet right now. Because I can see you. And I can't believe you're still wearing skinny jeans.

When Google, Samsung, and Microsoft saw Apple selling millions of iPads at $500 and up,

they had an incentive to jump into the market. Price signals not only tell producers what

to make, but they also help distribute tablets to the people that value them the most.

For example: if someone's grandma doesn't really want a tablet and she was only willing

to pay $20 for one, she doesn't get it. Unless her grandkids drag her into the 21st century,

by giving her one for Christmas. Some economists love price signals so much that they argue

against the tradition of giving gifts. This argument was popularized by economist Joel

Waldfogel who argued that gift giving is inefficient. From a macroeconomic point of view, holiday

shopping boosts consumer spending, GDP, and employment. But, if too many people are purchasing

items that the end consumers don't value, then resources are being wasted.

Of course, this analysis doesn't factor in other implicit benefits of gift giving Like

fostering love and affection among family and friends. But the fact remains: The ideal

gift in terms of efficiency is cash. Heart-warming cash.

Thanks Thought Bubble. Theoretically, in a free market, producers cannot make themselves

better off without making consumers better off. If a company makes too many units of

a product or just undesirable stuff, They'll have to adapt quickly, or else it will go

out of business. Competition between businesses keeps prices and quality up. This is our old

It's important to take a step back here and point out that we're not saying that free

markets are always good and that government involvement is always bad. Most economists

recognize that markets aren't perfect and they often fail to meet society's needs. In

these cases, economists encourage the government to either regulate or take direct control

In the United States, which is often mistaken for a free market economy, it turns out just

about everything is regulated. For example, FDA regulations reject any wheat that contains

nine milligrams or more rodent excreta pellets and/or pellet fragments per kilogram. And

the government directly controls the markets for national defense and public education.

The field of public economics analyzes this very thing.

Now I love rodent excrement and public education as much as the next girl But let's get back

to markets and the role that prices play in determining how we use our limited resources.

So price signals help us use our resources efficiently, but that doesn't mean that everyone

agrees that they are always right or just. Take price gouging.

Price gouging happens when sellers raise prices for essential items like food, water, or gasoline.

When there's something like an emergency. Some argue that this practice exploits consumers

and as an example of the cruelty of markets. In the US, anti-price gouging laws have been

enacted in 34 states. But many economists say that these laws promote inefficiency and

actually make the problem worse. They argue that allowing prices to increase in times

of crisis encourages others outside the disaster zone to haul in and sell essential goods.

If prices aren't allowed to increase, then there's less of an incentive to bring this

stuff in. Furthermore, higher prices for things like batteries, sleeping bags, and generators

mean that people who don't really need them won't buy them, making them more available

to people who do. Now it might not always be government laws that limit price gouging.

It may be the desire to earn profit that actually keeps prices down.

It's clear that businesses can earn a ton of profit in the short run by price gouging,

but what happens in the long run? Consumers are likely to remember how they were treated.

This is part of the reason some businesses like Walmart has an emergency operation center

and an in-house meteorologist to interpret weather patterns. This allows them to have

goods like water and batteries and stock when they're needed.

Not only is this profitable, it's also a pretty good public relations move. In fact, in some

cases like Hurricane Katrina in 2005, private businesses were quicker to provide disaster

relief than government agencies. A different example of how the price system is perceived

as unjust is below-cost pricing. Sometimes called predatory pricing. This is the idea

that a business can drive out competitors by charging lower prices even at a short term

loss. Competitors that can't sustain such low prices will be forced out of the market,

giving the surviving businesses market share and the ability to raise prices.

Let's talk about Walmart again. Walmart has been the target of numerous predatory pricing