What causes an economic recession? - Richard Coffin

2,075,879 views ・ 2019-10-15

TED-Ed


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翻译人员: Yen Doran 校对人员: Carol Wang
00:06
For millennia,
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千百年来,
00:08
the people of Britain had been using bronze to make tools and jewelry,
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英国人民一直用青铜制造工具和珠宝,
00:12
and as a currency for trade.
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并用作贸易的货币。
00:15
But around 800 BCE, that began to change:
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但大约在公元前 800 年, 状况开始改变:
00:19
the value of bronze declined, causing social upheaval and an economic crisis—
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青铜的价值下降, 导致社会动荡和经济危机——
00:25
what we would call a recession today.
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即我们今天所称的经济衰退。
00:28
What causes recessions?
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是什么导致了经济衰退呢?
00:30
This question has long been the subject of heated debate among economists,
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长期以来,这个问题 一直是经济学家们激烈辩论的话题,
00:35
and for good reason.
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并且有充分的理由。
00:36
A recession can be a mild decline in economic activity
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衰退可以是一个国家里
00:39
in a single country that lasts months,
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持续数月的经济活动轻微下降,
00:42
a long-lasting downturn with global ramifications that last years,
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可以是一个持续几年、 影响全球的长期不景气,
00:47
or anything in between.
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或是介于两者之间的情况。
00:49
Complicating matters further,
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更复杂的情况下,
00:51
there are countless variables that contribute to an economy’s health,
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有无数变量影响经济健康,
00:55
making it difficult to pinpoint specific causes.
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造成难以确定具体原因。
00:59
So it helps to start with the big picture:
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因此,从大局开始有助于理解:
01:01
recessions occur when there is a negative disruption
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当不利冲击打破供需平衡,
01:04
to the balance between supply and demand.
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就会产生经济衰退。
01:07
There’s a mismatch between how many goods people want to buy,
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人们想买的商品数量、
01:11
how many products and services producers can offer,
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产品和服务生产商 可以提供的数量、
01:14
and the price of the goods and services sold, which prompts an economic decline.
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以及商品和服务售价 三者间的不匹配引发了经济衰退。
01:19
An economy’s relationship between supply and demand
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供需之间的经济关系
01:23
is reflected in its inflation rates and interest rates.
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反映在通货膨胀率和利率上。
01:27
Inflation happens when goods and services get more expensive.
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商品和服务越来越贵时, 就会发生通货膨胀。
01:31
Put another way, the value of money decreases.
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换句话说,钱贬值了。
01:35
Still, inflation isn’t necessarily a bad thing.
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尽管如此,通货膨胀并不一定是坏事。
01:38
In fact, a low inflation rate is thought to encourage economic activity.
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事实上,低通货膨胀率 被认为可促进经济活动。
01:43
But high inflation that isn’t accompanied with high demand
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但高通胀若无高需求与之相伴,
01:46
can both cause problems for an economy and eventually lead to a recession.
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既可带来经济问题, 又最终导致经济衰退。
01:52
Interest rates, meanwhile,
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同时,利率则反映了
01:54
reflect the cost of taking on debt for individuals and companies.
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个人和公司所承担债务的成本。
01:58
The rate is typically an annual percentage of a loan
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利率,通常是贷款还清前 借款人向债权人所支付的
02:01
that borrowers pay to their creditors until the loan is repaid.
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利息与贷款总额的年度百分比。
02:05
Low interest rates mean that companies can afford to borrow more money,
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低利率意味着公司有能力借更多的钱,
02:09
which they can use to invest in more projects.
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可以用来投资更多项目。
02:12
High interest rates, meanwhile, increase costs for producers and consumers,
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同时,高利率也增加了 生产者和消费者的成本,
02:17
slowing economic activity.
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进而放缓经济活动。
02:19
Fluctuations in inflation and interest rates
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通货膨胀和利率的波动
02:22
can give us insight into the health of the economy,
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可让我们洞察经济健康状况,
02:25
but what causes these fluctuations in the first place?
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但是首先,什么原因导致这些波动?
02:29
The most obvious causes are shocks like natural disaster, war,
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最明显的原因像自然灾害、 战争这样的冲击,
02:33
and geopolitical factors.
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和地缘政治因素。
02:35
An earthquake, for example,
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例如,地震,
02:37
can destroy the infrastructure needed to produce important commodities such as oil.
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能破坏生产重要商品所需的 基础设施,如石油。
02:42
That forces the supply side of the economy to charge more for products that use oil,
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这迫使经济供给方对使用 油的产品收取更多费用,
02:47
discouraging demand and potentially prompting a recession.
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进而抑制需求,并可能引发经济衰退。
02:51
But some recessions occur in times of economic prosperity—
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但有些经济衰退 发生在经济繁荣时——
02:55
possibly even because of economic prosperity.
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甚至可能因为经济繁荣。
02:59
Some economists believe that business activity from a market’s expansion
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一些经济学家认为,
03:03
can occasionally reach an unsustainable level.
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市场扩张的商业活动 可偶尔达到一个不可持续的水平。
03:06
For example, corporations and consumers may borrow more money
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例如,在假定经济增长的前提下,
03:10
with the assumption that economic growth will help them handle the added burden.
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公司和消费者可能借更多钱 来帮他们处理增加的负担。
03:14
But if the economy doesn’t grow as quickly as expected,
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但是,如果经济增长不及预期,
03:18
they may end up with more debt than they can manage.
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最终,他们可能 因还不上款而债台高筑。
03:21
To pay it off, they’ll have to redirect funds from other activities,
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为了还清,他们必须 重新分配活动的资金,
03:25
reducing business activity.
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减少业务活动。
03:27
Psychology can also contribute to a recession.
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心理状态也是经济衰退的因素,
03:30
Fear of a recession can become a self-fulfilling prophecy
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如果人们对经济衰退的恐惧 导致其撤回投资和消费,
03:34
if it causes people to pull back investing and spending.
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这种恐惧就成为自我实现的预言。
03:38
In response, producers might cut operating costs
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为了应对,生产商可能降低运营成本,
03:41
to help weather the expected decline in demand.
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来帮助应对预期的需求下降。
03:44
That can lead to a vicious cycle as cost cuts eventually lower wages,
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因为成本削减最终降低了工资, 这样可导致恶性循环,
03:49
leading to even lower demand.
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造成需求的再度减少。
03:52
Even policy designed to help prevent recessions can contribute.
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甚至预防经济衰退的政策, 也能促成经济衰退。
03:57
When times are tough, governments and central banks may print money,
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困难时期,政府和央行可能会印钞,
04:01
increase spending, and lower central bank interest rates.
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造成支出增加 和央行利率下降。
04:05
Smaller lenders can in turn lower their interest rates,
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较小的贷方可反过来降低其利率,
04:08
effectively making debt “cheaper” to boost spending.
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有效使贷款“更便宜”以刺激消费。
04:12
But these policies are not sustainable and eventually need to be reversed
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但是这些政策是不可持续的,
最终需要回收货币 来防止过度通货膨胀。
04:16
to prevent excessive inflation.
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04:18
That can cause a recession if people have become too reliant on cheap debt
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如果人们变得过于依赖 廉价贷款以及政府激励,
04:23
and government stimulus.
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这样可能导致经济衰退。
04:25
The Bronze recession in Britain eventually ended when the adoption of iron
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当开始采用铁帮助 农业革命和粮食生产时,
04:30
helped revolutionize farming and food production.
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英国青铜经济衰退最终结束。
04:33
Modern markets are more complex,
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现代市场更为复杂,
04:35
making today’s recessions far more difficult to navigate.
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使今天的经济衰退 更难以找到正确的方法应对。
04:39
But each recession provides new data to help anticipate and respond
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但每次经济衰退都提供了新数据,
04:43
to future recessions more effectively.
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更有效地帮助预测 和响应未来的衰退。
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