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  • Adriene: Hi, I'm Adriene Hill.

  • Mr. Clifford: And I'm Jacob Clifford. And welcome to Crash Course Economics.

  • Adriene: So far we talked about GDP and how the overall economy, but we haven't really

  • talked about why some countries have a high GDP and others have low GDP. So, why are some

  • countries rich, and others poor?

  • Let's investigate.

  • Mr. Clifford: Look, a clue! Productivity!

  • Adriene: Hmm...

  • [Intro]

  • Mr. Clifford: So, if we're gonna figure out why some countries are rich and some are poor,

  • we have to first define what it means to be rich.

  • Economists measure economic output by looking at Gross Domestic Product or GDP. As you remember

  • from the last video, GDP is the market value of all goods and services newly produced in

  • a country in one year.

  • India's GDP is over six times larger than the GDP of Singapore, but that doesn't mean

  • the average Indian is richer than the average Singaporean. That's because India has 240

  • times more people than Singapore.

  • So, economists look at something called GDP per capita, to determine how wealthy a country

  • is. GDP per capita is the GDP of the country divided by its population. It represents output

  • per person, and a country with a high GDP per capita is considered rich.

  • Of course, some of you may say being rich has nothing to do with GDP or money. It has

  • to do with whether or not you're happy. Fine, money may not buy happiness, but it can prevent

  • a lot of misery. The United Nations' Human Development Index, or HDI, measures life expectancy,

  • literacy, education, quality of life, and it ranks countries according to their findings.

  • The data shows the country that have a high GDP per capita have far less infant mortality,

  • poverty and preventable diseases.

  • So, economists often used GDP per capita to measure a country's standard of living. Countries

  • with the lowest standard of living are the ones that are conventionally considered poor.

  • So, why are some countries poor?

  • Adriene: If you ask someone on the street, they might say the difference is due to lack

  • of natural resources or inept governments, that is if the person doesn't subscribe to

  • some antiquated racial or social Darwinist stereotypes -- but we should talk about those

  • ideas. Well, let's skip the racial and social Darwinists stereotypes, but resources and

  • leadership are interesting.

  • First, resources. Look at Singapore: third on GDP per capita and ninth on the Human Development

  • Index. Or Switzerland, ninth in GDP per capita and third on the HDI. Singapore is a teeny

  • tiny island, and Switzerland's main natural resources is cows. And cows are great! I love

  • cows, love love, but they aren't really natural resources.

  • Zimbabwe, on the other hand, has tons of natural resources, like fertile soil, coal and rare

  • minerals, but their economy? It's a wreck. It's a hundred and sixty first (161st) in

  • GPD per capita and a hundred and fifty sixth (156th) on the HDI. Their incompetent and

  • corrupt government keeps them poor.

  • For comparison sake, the GDP per capita in the US is 18 times higher than in Bangladesh,

  • and we're not just trouncing Bangladesh. GDP per capita wise, we're also crushing the GDP

  • numbers of our great-grandparents. Take that, Aloysius!

  • The GDP per capita in the US today is about 8 times higher than a hundred years ago. That's

  • pretty impressive. Maybe the Thought Bubble can produce an explanation.

  • Mr. Clifford: Let's say John runs a bakery. Each worker to produce a dozen donuts per

  • hour, and each donut sells for $1. If John wants to stay in business, he can't pay his

  • workers more than $12 an hour.

  • Obviously, he needs to pay for the ingredients and the oven, but even if you wanted to be

  • generous, he couldn't pay them $20 an hour. They just don't produce enough for us to cover

  • the cost. But if John can find a way for each worker to produce four dozen donuts per hour,

  • he can pay them $20 per hour. Simply put, the more that each worker can produce, the

  • more money each can earn.

  • Economists argue that the main reason some countries are rich is because of their productivity.

  • Their ability to produce more output, per worker, per hour. US workers, altogether,

  • earn 18 times more per hour than Bangladeshi workers, because they're able to produce 18

  • times more output per hour. US workers today earn 8 times more per hour than US workers

  • a hundred years ago, because they produce 8 times more output per hour. But not only

  • is US producing more stuff, it's also producing higher value products, like Avengers movies

  • and jet engines.

  • So going back to our bakery example, it's like a worker from a hundred years ago be

  • able to produce six plain donuts per hour, while workers today is able to produce 60

  • salted caramel designer cupcakes per hour.

  • Adriene: Thanks, Thought Bubble. Before we go further, we need to point out the limitations

  • of this bakery example. It's true, productivity is key. A country that is more productive

  • can create more stuff and can generate higher incomes, but in real life, it doesn't always

  • look like that.

  • For example, in the US, the GDP per capita has been steadily increasing for decades,

  • but median family incomes haven't changed much at all. This gets to issues of income

  • inequality, and we're gonna devote an entire episode to it.

  • Limitations aside, low productivity remains a fundamental reason why some countries are

  • poor. Higher productivity not only helps explain why we have more money to buy stuff, but also

  • why we have more stuff to buy. And speaking of stuff to buy, because it is socially unacceptable

  • somehow for me to appear in the same clothes over and over, I need 40 blouses to make this

  • series. That is a lot of blouses. That strains resources, pollutes the planet, and at high

  • levels like 40 is completely unsustainable. Don't worry though, some of these are from

  • thrift stores.

  • So what about people in poor countries? What do they need? Well, they need food, clothing

  • and housing, they need clean water and plumbing and sewers, they need hospitals and medicine,

  • but all those things have to be produced, so a country that produces more of these things

  • with fewer resources is gonna be wealthier and healthier, and perhaps even happier than

  • a country that can't. But making a million cell phones isn't very impressive if your

  • country has a hundred million people, so we need to look at how much stuff we produce

  • per person. That's GDP Per Capita.

  • Mr. Clifford: So if everything all boils down to productivity, what makes some countries

  • more productive than others? Well, let's go back and look at the main ingredients that

  • we need to produce things, what economists call the factors of production.

  • First, you need land, which includes all natural resources, and then you need workers which

  • is labor, and then you need capital which includes machines and factories and infrastructure,

  • things you need to produce other things. One special type of capital is the workers' education,

  • knowledge and skills required to produce things. Economists call this human capital. So school's

  • not just about torturing you, except for PE, it's about helping your human capital.

  • The quantity and quality of these resources is the first step to being more productive,

  • but perhaps even more important is how you use them. Increasing the amount of capital

  • has a cost, but finding new ways to organize production is virtually free. Economists call

  • the organizational effectiveness "technology." Think of it as the good ideas about how to

  • combine labor and capital that you already have.

  • US workers produce so much more than Bangladeshi workers because the US has more factories,

  • robots, and computers. But more capital only gets you so far; it increases your production

  • capacity but it also eats up some of that production capacity. You have to develop more

  • factories and workers and machines to make more capital, and then replace them when they

  • wear out. Technology on the other hand takes the same amount of resources and organizes

  • them in a way to produce more output.

  • Adriene: Here's an example. Twenty-five years ago, you could find computers in just about

  • every workplace in the US, but productivity growth in the US was flat. Then, starting

  • in about 1995, US productivity boomed, led by computer technology. SO what changed?

  • In the late 80's and early 90's, most workplace computers were individual units, plugged into

  • nothing but an electric outlet. They were useful for writing and printing documents,

  • or acting as overgrown calculators, and playing Oregon Trail, but that was about it. When

  • the World Wide Web came along everything changed.

  • It turns out that computers are far more useful when they can talk to each other. The computer

  • at the store could talk to the computer at the warehouse which could talk to the computer

  • at the factory. That means I can get a new blouse from the other side of the world pretty

  • much immediately. Connectivity equals productivity. Productivity in the US boomed for the next

  • 10 years, and wages jumped as a result.

  • 200 years ago, productivity in the US wasn't that great, but it grew a little bit every

  • year. Compounding that over decades and centuries gives us the huge gap between the US standard

  • of living and that of many developing countries. The good news is that in recent decades, many

  • developing countries, like China, South Korea, Mexico and Ghana have dramatically improved

  • their capital in technology and have seen their living standards rise.

  • So if you want a single, one-word answer as to why some countries are more successful

  • than others, here it is: Productivity. So if you look at the big picture--

  • Mr. Clifford: And by "big picture," we mean both globally and historically--

  • Adriene: increasing productivity has resulted in increased standards of living for much

  • of humanity over the last hundred years, and it's hard to argue that this is a bad thing.

  • Mr. Clifford: Thanks for watching, we'll see you next week.

  • Thanks for watching Crash Course Economics. It was made with the help of all of these

  • nice people. You can improve their standard of living by supporting Crash Course at Patreon.

  • It's a voluntary subscription platform that allows you to pay whatever you want monthly

  • to help make Crash Course free for everyone forever. Thanks for watching, DFTBA.

Adriene: Hi, I'm Adriene Hill.

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生産性と成長。クラッシュコース経済学 #6 (Productivity and Growth: Crash Course Economics #6)

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    Huang LuLu に公開 2021 年 01 月 14 日
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