In this video, I’ll ask you three questions from Hans Rosling’s ignorance test
to see if you are smarter than a chimpanzee.
The Swedish academic, Hans Rosling was not only an accomplished physician and statistician,
but a fine public speaker as well.
His presentation on “The best stats you’ve ever seen” is my favourite TED Talk of all-time,
and shows him at his gifted best,
mixing humour with visual animations to produce something both educational and entertaining.
Using facts rather than opinion, he bought statistics to life
他揭秘神话 证明人类种族不断改进 让你感到更积极更乐观
and left you feeling more positive and optimistic with his debunking of myths and proof of the human race improving over time.
罗斯林说 我们把世界划分成两类国家：发达国家 发展中国家
Rosling said that the idea you can split the world into two types of countries, developed and developing,
is outdated and wrong.
他说 “难道英国 德国 美国没有正在发展吗？”
“Are the UK, Germany and the USA not still developing?” he said.
Is your world view correct?
How much do you know about the world?
You can check by taking Hans Rosling’s ignorance test.
What percentage of the world’s one-year old children is vaccinated against measles?
a) Approximately 20% b) Approximately 50%
c) Approximately 80%
In 1950 there were fewer than one billion children (aged 0-14) in the world.
By 2000 there were almost two billion.
How many do UN experts think there will be in 2100?
a) 4 billion b) 3 billion
c) 2 billion
In the last 20 years the proportion of the world population living in extreme poverty has…
b) Stayed the same c) Halved
The answer to each of these three questions is c).
These questions were asked in various countries around the world and the results were not good.
For almost every question in every country, the correct answer was chosen by the least amount of people.
实际上 在很多情况下 人类的答对人数反而低于黑猩猩
In fact, in many cases the amount of correct answers was lower than it would have been if a chimpanzee had answered the question,
picking an answer at random because they have no knowledge.
所以如果你的 “无知度测试” 一塌糊涂 证明你缺乏知识吗？
So do you lack knowledge if you got the answers to the ignorance test wrong?
No, not necessarily.
When you score worse than random, i.e. in this case 33% or less,
it means you have preconceived ideas.
The problem is not a lack of knowledge in the subject, it’s these ideas.
A preconceived idea is an opinion formed beforehand without adequate evidence.
比如 很多人“概括化”非洲 认为整个非洲都是一个样子
For example, many people generalise Africa, treating the entire continent the same way,
rather than judging each country on its own merits.
When it comes to Asia, you wouldn’t say, “I’m not going on holiday to Thailand
because there’s a war in Afghanistan”.
Not all the countries in Africa are progressing at the same rate.
出生率增高啦 儿童的死亡率下降啦 这很普通好吗
In some growth is up and child mortality is going down, something truly worth noting.
Kenya’s economic growth is over 5%, by comparison the UK’s is only 2%.
So why do you have these preconceived ideas?
Firstly, slow, steady changes are not deemed news-worthy
and are therefore not as well reported as other more shocking stories.
The average number of children born per woman across the world is now 2.4.
Back in 1963, it was five.
As a result, the number of children in the world has stopped increasing.
This is one of the biggest events in the history of mankind
and it has been pretty much completely missed by the media.
其次 在这个飞速发展的世界 你在学校学到的很多知识可能已经过时了
Secondly, in a fast-changing world, many of the things you were taught at school may now be outdated.
最后 许多人固执己见 有失偏颇
Finally, many people generalise their personal experiences, which can be very biased.
A fact-based worldview, fights ignorance.
我们需要实事求是 这样我们才能了解这个世界 才能获益颇丰
We need to start acting based on facts to help us understand the world and better benefit from it.