Why every world map is wrong - Kayla Wolf

761,108 views ・ 2021-03-29

TED-Ed


Please double-click on the English subtitles below to play the video.

Translator: prudence lam Reviewer: Chak Lam Wan
00:07
Fourteen Greenlands could fit in Africa,
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非洲可以容納 14 個格陵蘭
00:10
but you wouldn’t guess it from most maps of the world.
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但係你從大部份世界地圖之中都見唔到係噉
00:12
The fact is, every world map humans have ever made is wrong.
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其實所有由人整嘅世界地圖都係錯嘅
00:17
Actually, it’s impossible to make a map of the world 100% right.
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根本就冇可能整個 100% 啱嘅世界地圖
00:22
No, not you, globe— we know you’re accurate.
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喂,唔係你啊,地球儀— — 我哋都知你啱㗎
00:25
Not you, Google Earth, you’re just a digital globe.
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都唔係你呀,Google 地球 你頂盡咪又係一個數碼化嘅地球儀
00:28
We're talking about flat maps, which, let's face it,
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我講緊嘅係平面地圖呀
00:32
are way more convenient for a lot of things.
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唔到我哋唔認 佢有時真係比好多嘢更加方便
00:35
Anyway, as we were saying,
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總言之,我係話
00:36
it’s impossible to make a 100% accurate flat map of a spherical planet.
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真係冇可能將一個立體嘅球體 印落一張完全平面嘅地圖
00:42
For a long time, people didn't even try.
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喺好耐好耐以前,人類根本連試都冇試
00:44
They just plonked places down in arbitrary locations without any consistent scale.
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佢哋只係隨意記低位置 冇任何統一嘅比例
00:50
Then in 150 AD, the Greek mathematician and astronomer Ptolemy
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去到公元 150 年 希臘嘅數學同天文學家托勒密
00:54
systematically mapped the Earth on a grid
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有系統噉將地球用網格標示出嚟
00:57
and placed locations on the grid according to coordinates,
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同埋按座標將地方攞喺網格度
01:00
so maps could be checked against others and replicated.
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令到地圖可以互相比較同複製
01:05
Ptolemy built his grid out of lines we still use today:
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托勒密所製網格用到嘅線條 係我哋直至今日到沿用緊:
01:08
180 lines of latitude and 360 lines of longitude.
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180 條緯度線同埋 360 條經度線
01:14
In spite of these advances, people kept getting lost.
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就算有呢啲進步都好 人類都係繼續蕩失路
01:18
Part of the problem was a— shall we say—
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其中一部份原因— — 應該點講好呢——
01:20
incomplete understanding of the world’s geography.
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就係我哋唔太理解世界嘅地理
01:24
But it was also just really difficult to navigate using a map.
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但其實用地圖嚟搵路都真係好難
01:28
Because the Earth is round,
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因為地球係圓嘅
01:30
the shortest route from one place to another is a path along a circle.
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由一個地方去另一個地方最短嘅路線 就係喺球體上面畫嘅一條線
01:35
If we draw this route on a flat map,
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如果我哋將呢條路線畫喺平面嘅地圖
01:37
it passes through every line of longitude at a different angle.
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佢就會用唔同嘅角度經過每一條經度
01:41
To follow the route, you’d have to constantly shift
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要跟住呢條路線
01:44
the direction you're traveling.
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你就要不停噉改變你行路嘅方向
01:47
Any slight error would land you in the wrong place.
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小小嘅行差踏錯都會令到你去唔到目的地
01:51
In 1569, Gerardus Mercator fixed this problem.
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喺 1569 年 杰拉杜斯·麥卡托就解決咗呢個問題
01:55
He created a world map proportioned
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佢整咗一個合乎比例嘅世界地圖
01:58
so these curved navigational routes would be straight,
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令呢啲彎曲嘅導航路線變成直線
02:02
passing through every line of longitude at the same angle
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經過每一條經度線嘅時候 都維持同一個角度
02:05
and therefore allowing navigators to set a constant bearing—
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等用導航嘅人可以設定一個固定嘅方位
02:08
in other words, travel in one direction— for a whole journey.
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換言之,可以全程都跟住一個方向旅行
02:12
There was just one tiny hitch:
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不過就有個小問題喇
02:14
to do this, he had to distort land masses and bodies of water
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如果要噉做 佢就要扭曲晒大陸板塊同埋海洋嘅形狀
02:18
so those furthest from the equator got larger
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令到離赤道遠啲嗰啲呢就會大啲
02:21
and those closest to the equator shrank.
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離赤道近嗰啲呢就細啲
02:24
In spite of its inaccuracies, Mercator’s map was very useful.
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撇除佢唔準確,麥卡托嘅地圖都幾實用
02:28
In fact, it’s still widely used today, including in online maps.
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其實佢到而家都被廣泛採用 包括一啲網上地圖
02:32
But it’s still wrong!
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不過依然係錯㗎!
02:35
In 1925, the Goode Homolosine Projection was created as— get this—
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喺 1925 年,古蒂等發明面積投影—— 即係——
02:40
an interrupted pseudo-cylindrical equal area projection.
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一個唔連續嘅偽圓柱體面積投影
02:45
What does that mean? Not important.
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即係點解? 唔重要
02:46
The point was to minimize distortion for the entire world.
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重點係盡量唔扭曲成個地球個樣
02:50
The map can be land-oriented... or ocean-oriented.
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嗰張地圖可以係以陸地為中心…… 或者以海洋為中心
02:55
Either way, the so-called orange peel map isn’t very easy to read.
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咩方式都好 呢一個好似橙皮噉樣嘅地圖都唔係太易睇
03:00
The Dymaxion Projection by American architect Buckminster Fuller
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喺 40 年代,由美國建築師巴克敏斯特·富勒
03:03
in the 1940s is even better.
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發明嘅戴美克森氏地圖投影就好啲喇
03:06
Sorry, did we say better?
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等陣先,係「好啲」咩?
03:07
It’s not better if you want to understand where things are in the world.
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對於想知啲地方喺世界嘅邊一個位置呢 就唔係太好喇
03:10
It is better in the sense that there are no visibly evident distortions
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好啲係指呢一個方法冇對陸地
03:15
of the land masses.
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造成明顯嘅扭曲
03:16
Though if you wanted to know, say, how far Brazil is from Nigeria,
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假如你想知道巴西離尼日利亞幾遠
03:21
you won’t get any sense of that from this map.
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你唔會從呢款地圖得知
03:24
The most accurate projection to date is the AuthaGraph World Map
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到目前為止,最準確嘅投影係
03:28
designed by Japanese architect Hajime Narukawa in 1999.
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由日本建築師鳴川肇 喺 1999 年設計嘅 AuthaGraph 世界地圖
03:32
The continents and oceans are almost completely in proportion,
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當中嘅洲同海洋幾乎全部都按比例
03:35
and the map is rectangular, just how we like it.
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而幅地圖都係呈長方形嘅 就好似而家我哋一般見到噉樣
03:39
Could this be the perfect map?
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噉佢有冇可能成為一幅完美嘅地圖呢?
03:42
Well... no.
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都係……唔得呀
03:43
Since the Mercator works for navigation and reads clearly,
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既然麥卡托個嗰方法都搞得掂導航 又睇得清楚
03:46
why bother with all these whacky maps?
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點解仲要理呢堆奇形怪狀嘅地圖呢?
03:49
Arno Peters argued that by enlarging European and North American countries,
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亞諾彼特斯就認為 麥卡托投影放大咗歐洲同北美國家
03:54
the Mercator projection gives white nations a sense of supremacy
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令白人國家相比喺赤道附近嘅非白人國家
03:57
over non-white nations closer to the equator.
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產生一份優越感
04:00
He adapted the Gall-Peters Projection, which counteracts that particular problem,
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為咗去對抗呢一個問題 佢採用咗高爾彼特斯投影法
04:05
but the continents are still... stretched.
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但陸地都係拉長咗
04:09
Today, we rely on maps less and less for navigation,
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宜家,我哋越嚟越少依賴地圖嚟導航
04:11
but they still play a vital role in education.
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但係佢哋仍然對教育嚟講好重要
04:15
Peters was definitely on to something:
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彼特斯有樣嘢講得好啱︰
04:17
no matter what map we’re looking at,
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無論我哋睇緊咩地圖都好
04:19
it’s a story told from the perspective of the map’s creator
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佢都係反映緊 各位地圖製作者睇嘢嘅角度
04:22
that in turn shapes—perhaps unduly— our perception of our world.
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亦塑造我哋對呢個世界嘅認識
04:27
Simple changes in map design,
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一啲簡單嘅地圖設計改動
04:29
even changes that have nothing to do with how we transfer
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就算唔關點樣將球體嘅地球 攞落平面地圖都好
04:32
a round Earth to a flat surface, can completely shift our point of view.
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都足以完全噉改變我哋嘅觀感
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