Can you solve the alien pyramid riddle? - Henri Picciotto

869,372 views ・ 2022-09-27

TED-Ed


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譯者: 柏陞 郭 審譯者: Helen Chang
00:07
Today is the one year anniversary of the best-worst day of your life.
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今天是你生命中碰過 最糟也是最棒的一週年。
00:11
The best part was discovering a subterranean city on Mars:
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最棒的部分是:過去你在火星上 發現一座地下城市,
00:15
the first evidence of intelligent alien life ever found.
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更是首次發現外星智慧生命的證據。
00:19
The worst part?
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那最糟糕的部分呢?
00:20
No one got to explore it,
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沒人要去探索它,
00:22
because that was when you lost contact with Earth.
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因為一年前你們和地球失去聯繫。
00:25
You and the other 99 scientists have spent the rest of the year
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你和其他 99 位科學家 已經花了一整年
00:29
engineering your survival,
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想盡辦法存活,
00:31
but you’re almost out of water and solutions.
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但這時你們幾乎用盡了飲水 和生存手段。
00:34
Everyone else is at the ice cap,
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其他人決定待在冰冠區探索,
00:36
but you’ve decided to investigate the buried city
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但你決定前往深藏地下的都市
00:39
to see if there are clues to how their civilization survived on a desert planet.
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調查文明過去是如何在 這顆荒漠星球上生存的線索。
00:45
The city is mostly ruins except for three intact pyramids—
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除了三座金字塔之外, 這座城市幾乎全毀。
00:50
two open and one sealed.
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其中兩座大門敞開, 另一座則大門深鎖。
00:52
In the first you find a series of symbols and pictograms,
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你在第一座塔裡發現一系列的 圖案和象形符號,
00:56
revealing a fortuitously base 10 numbering system.
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而且湊巧採用 10 進位制。
01:01
The second pyramid’s facade is covered in these symbols.
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接著你發現第二座塔的正面 刻滿這些符號。
01:04
Inside you discover a device,
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進去以後你找到一台儀器,
01:06
as well as mosaic representations of how to use it.
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還有幾幅說明使用方法的鑲嵌畫。
01:10
From those you glean the following:
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你從這些圖像中推敲出一些資訊:
01:12
the device is the key to opening the sealed pyramid
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用這個儀器輸入中心方格裡的數字,
01:16
by inputting the number on the center block.
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便能夠打開封閉金字塔;
01:19
But if you put in the wrong number, something terrible and deadly will happen.
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但如果你輸入錯誤的數字, 就可能招致某種糟糕且致命的結果。
01:23
The doors to all pyramids work on the same principle.
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此規則適用於所有金字塔的門。
01:27
What number should you input to open the door to the sealed pyramid?
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那麼該輸入哪個數字 以開啟封閉的金字塔呢?
01:32
Pause here to figure it out yourself. Answer in 3
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[你可以在此暫停思索答案] [距離公布答案剩餘三秒]
01:35
Answer in 2
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[距離公布答案剩餘兩秒]
01:38
Answer in 1
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[距離公布答案剩餘一秒]
01:40
The pattern revealed by the second pyramid is that every number
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從第二座塔的圖案可以歸納出:
每一格數字都是下層相接兩格的總和。
01:44
is the sum of the two numbers directly beneath it.
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01:48
If that applies to the sealed pyramid, 40 clearly belongs to the left of 30.
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如果此規律也適用於封閉的金字塔, 那麼在 30 左邊的肯定是 40 了。
01:54
The center number is the sum of 7 and an unknown, call it x.
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中心的數字是七和未知數x的總和。
01:59
The value of x can be determined by trial and error,
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x的值能透過嘗試錯誤來找出,
02:03
but it’s quicker to use algebraic reasoning.
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但應用代數推理還是更快一些。
02:07
The number to the left of the center number is 5+x.
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假設位於中心左側格子數字是 5+x,
02:11
Therefore, this block, 40, is equal to 5+x plus 7+x.
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那麼 40 這一格就等同於 5+x加上7+x了。
02:18
Solving for x, x must be 14, making the central block 21.
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再進一步推算後得出x為 14 , 而中心的數字為 21。
02:25
You enter 21 on the remote, and the door opens!
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你用儀器輸入 21 打開了門,
02:29
Inside you find yet another riddle.
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在裡頭又發現另一個謎。
02:32
The walls show the history of this civilization.
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牆上記述著了這個文明的歷史。
02:36
When they lived here, the planet was covered with oceans.
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當他們還定居在這的時候, 這顆星球表面覆蓋著大片海洋。
02:40
But at a certain point, they up and left Mars.
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但在某個時間點, 他們搭乘飛行器離開了火星。
02:43
In order to reserve the planet for themselves
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為了供日後他們回訪 這顆星球時使用,
02:46
while making it inhospitable to others,
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還有讓這顆星球不適合外來者居住,
02:48
they moved all the water underground,
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他們把所有的水輸往地下。
02:51
using a gigantic engineering marvel activated by a single lever.
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這項工程僅憑一根搖桿操縱的 巨大機械水槽。
02:57
The lever is hidden in the Great Pyramid.
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這根搖桿就藏在大金字塔的某處。
03:00
Pulling the lever again would reverse the process,
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只要再度啟動搖桿便能逆轉整個過程,
03:03
and bring the water back to the surface.
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讓水源再次回歸地表。
03:06
But where is this Great Pyramid?
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但是這大金字塔又在哪呢?
03:08
The mosaics indicate it should be right here, but it’s clearly not.
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鑲嵌畫明確地指出它應該在這, 可事實並非如此。
03:13
Without it, you have no choice but to climb back out of the city to the surface.
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眼看遍尋不著,你只能離開城市、 攀上回到地表的階梯。
03:18
And that’s when you see it.
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這時你發現了真相:
03:20
The city is the final pyramid, or at least one face of it.
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這座城市就是最後的金字塔, 至少表面看上去如此。
03:25
A great pyramid, indeed!
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這的確是座大字塔!
03:27
The city’s architects must have designed each district
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城市的建築師肯定把每塊街區
03:30
to show a number when viewed from above.
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設計成從上方就能看出數字。
03:33
But only these three survived the ravages of time.
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可是只有這三塊區域熬過 時間的摧殘。
03:37
The key once again must be whatever number was in the center plaza.
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謎底一定又是中心廣場裡的數字。
03:41
You rush there, but what number should you input into the remote?
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你急忙地趕到那裡, 可是你該用儀器輸入什麼數字呢?
03:45
Pause here to figure it out yourself. Answer in 3
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[你可以在此暫停思索答案] [距離公布答案剩餘三秒]
03:47
Answer in 2
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[距離公布答案剩餘兩秒]
03:50
Answer in 1
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[距離公布答案剩餘一秒]
03:53
You could write out the algebra again, but here’s a more visual approach.
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你可以再次寫出代數解題, 不過這裡有個更清晰的作法。
03:57
Sketch a pyramid, and enter the known numbers.
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先把金字塔畫好, 並填入已知的數字。
04:00
Between the 9 and the 10,
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在 9 和 10 之間的方格,
04:02
you can put colored dots to represent the two unknowns at the bottom.
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你可以放上兩個不同顏色的點 代表底層未知的數字。
04:07
Working your way up the pyramid and drawing the sums as you go
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當你逐層填入每格的總和時,
04:11
will reveal that 100 = 19 + 3 green dots
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你會得出 100 等於 19 加上三個綠點
04:16
+ 3 orange dots.
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再加上三個橘點。
04:18
So 3(green + orange)=81,
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又得證:綠點加橘點 然後乘以 3 等於 81。
04:22
and green + orange, which is the middle number,
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那麼橘點與綠點的和, 也就是中間的數字,一定是 27。
04:26
must be 27.
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04:28
You don’t actually have to figure out what green and orange are—
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你沒必要去算出橘點 和綠點分別是多少。
04:32
in fact, they have a number of possibilities.
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事實上,他們有許多可能性。
04:35
When you enter 27, a hidden mechanism opens in the middle of the plaza,
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在你輸入 27 後, 中央廣場上的一處隱藏機關啟動,
04:40
revealing a staircase.
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揭露了樓梯所在。
04:42
You descend,
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你進門向下走,
04:43
and finally find yourself in a room with a giant lever in the middle.
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最後抵達了中央有根巨大搖桿的房間。
04:49
Only one question remains: do you pull it?
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現在就剩最後一個問題: 你會拉下它嗎?
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