Can you solve the secret assassin society riddle? - Alex Rosenthal

1,301,524 views ใƒป 2023-11-07

TED-Ed


์•„๋ž˜ ์˜๋ฌธ์ž๋ง‰์„ ๋”๋ธ”ํด๋ฆญํ•˜์‹œ๋ฉด ์˜์ƒ์ด ์žฌ์ƒ๋ฉ๋‹ˆ๋‹ค.

๋ฒˆ์—ญ: Jade ์ œ์ด๋“œ ๊ฒ€ํ† : DK Kim
00:07
Your agent is about to infiltrate a life or death poker game
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์—ฌ๋Ÿฌ๋ถ„์˜ ์š”์›์ด ๊ทธ๋žœ๋“œ ์นด์ง€๋…ธ์˜ ๋น„๋ฐ€๋ฐฉ์—์„œ ํŽผ์ณ์ง€๋Š”
00:11
in a hidden back room of the grand casino.
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๋ชฉ์ˆจ์„ ๊ฑด ํฌ์ปค ๊ฒŒ์ž„์— ์ž ์ž…ํ•˜๋ ค ํ•ฉ๋‹ˆ๋‹ค.
00:14
Youโ€™re on the trail of an elite society of assassins,
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์—ฌ๋Ÿฌ๋ถ„์€ ์—˜๋ฆฌํŠธ ์•”์‚ด์ž ์ง‘๋‹จ์„ ์ถ”์ ํ•˜๊ณ  ์žˆ๋Š”๋ฐ,
00:17
each of whom carries a signature playing card corresponding to their role.
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๊ฐ ์•”์‚ด์ž๋“ค์€ ์ž์‹ ์˜ ์—ญํ• ์— ๋”ฐ๋ผ ๊ณ ์œ ํ•œ ์นด๋“œ๋ฅผ ๋“ค๊ณ  ๋‹ค๋‹™๋‹ˆ๋‹ค.
00:22
Youโ€™ve received intel from a 100% reliable source about how they operate.
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์—ฌ๋Ÿฌ๋ถ„์€ 100% ๋ฏฟ์„ ๋งŒํ•œ ๊ณณ์—์„œ ๋ฒ”์ฃ„ ์ˆ˜๋ฒ• ์ •๋ณด๋ฅผ ๋ฐ›์•˜์Šต๋‹ˆ๋‹ค.
00:27
Their M.O. is to invite their victims to a high stakes game
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๊ทธ๋“ค์˜ ์ˆ˜๋ฒ•์€ ์œ„ํ—˜ํ•œ ๊ฒŒ์ž„์— ํ”ผํ•ด์ž๋“ค์„ ์ดˆ๋Œ€ํ•˜๊ณ 
00:31
with one or more killers at the table.
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ํ•ด๋‹น ํ…Œ์ด๋ธ”์— ์•”์‚ด์ž๋ฅผ ํ•œ ๋ช… ์ด์ƒ ์•‰ํ˜€๋†“๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
00:33
The game is a variant of poker played with a single, fair deck
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์ด ๊ฒŒ์ž„์€ ๋ชจ๋“  ์ฐธ๊ฐ€์ž๊ฐ€ ๊ณต์ •ํ•œ ํ•œ ๋ฑ์—์„œ
00:37
where every player receives two cards in secret.
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๋น„๋ฐ€๋ฆฌ์— ์นด๋“œ ๋‘ ์žฅ์„ ๋ฐ›๋Š” ๋ณ€ํ˜•๋œ ํฌ์ปค ๊ฒŒ์ž„์ž…๋‹ˆ๋‹ค.
00:41
Each assassin immediately and covertly swaps one of the cards
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๊ฐ ์•”์‚ด์ž๋Š” ์ฆ‰์‹œ ๊ทธ๋ฆฌ๊ณ  ์€๋ฐ€ํ•˜๊ฒŒ
๋ฐ›์€ ์นด๋“œ ์ค‘ ํ•˜๋‚˜๋ฅผ ์ž์‹ ์˜ ๊ณ ์œ ํ•œ ์นด๋“œ๋กœ ๋ฐ”๊ฟ”์นฉ๋‹ˆ๋‹ค.
00:45
theyโ€™ve been fairly dealt with their signature card.
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00:49
Then the robo-dealer reveals three shared cards on the table.
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๊ทธ๋‹ค์Œ ๋กœ๋ณด ๋”œ๋Ÿฌ๋Š” ํ…Œ์ด๋ธ” ์œ„๋กœ ๊ณต์œ  ์นด๋“œ ์„ธ ์žฅ์„ ํŽผ์นฉ๋‹ˆ๋‹ค.
00:53
After betting, the assassins play their signature cards
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๋ฒ ํŒ… ํ›„, ์•”์‚ด์ž๋“ค์€ ์ค€๋น„ ์‹ ํ˜ธ๋กœ ๊ฐ์ž์˜ ๊ณ ์œ ํ•œ ์นด๋“œ๋ฅผ ๋’ค์ง‘์Šต๋‹ˆ๋‹ค.
00:57
as a signal that theyโ€™re ready.
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00:59
When the last one comes out, they go about their grim business.
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๋งˆ์ง€๋ง‰ ์‚ฌ๋žŒ์ด ์นด๋“œ๋ฅผ ๊ณต๊ฐœํ•  ๋•Œ ๊ทธ๋“ค์€ ์Œ์‚ฐํ•œ ์ž„๋ฌด๋ฅผ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
01:03
Today's game is no different,
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์˜ค๋Š˜ ๊ฒŒ์ž„๋„ ๋‹ค๋ฅด์ง€ ์•Š์Šต๋‹ˆ๋‹ค.
01:04
and your mission is to identify the assassins and save all the victims.
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์—ฌ๋Ÿฌ๋ถ„์˜ ์ž„๋ฌด๋Š” ์•”์‚ด์ž๋ฅผ ์ฐพ์•„๋‚ด์„œ ๋ชจ๋“  ํ”ผํ•ด์ž๋ฅผ ๊ตฌํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
01:09
Everyone at the table is either an assassin or a victim,
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ํ…Œ์ด๋ธ”์— ์žˆ๋Š” ๋ชจ๋“  ์‚ฌ๋žŒ์€ ์•”์‚ด์ž๊ฑฐ๋‚˜ ํ”ผํ•ด์ž์ด๊ณ 
01:13
and there must be at least one of each.
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๊ฐ๊ฐ ์ ์–ด๋„ ํ•œ ๋ช…์”ฉ์€ ์žˆ์Šต๋‹ˆ๋‹ค.
01:16
The game is about to begin when your agent finds the secret passage
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๊ฒŒ์ž„์€ ์—ฌ๋Ÿฌ๋ถ„์˜ ์š”์›์ด ๋น„๋ฐ€ ํ†ต๋กœ๋ฅผ ์ฐพ์•„๋‚ด
01:19
and talks her way into a seat at the table.
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ํ…Œ์ด๋ธ”๋กœ ๊ฐ”์„ ๋•Œ ๋ง‰ ์‹œ์ž‘๋ฉ๋‹ˆ๋‹ค.
01:23
Meanwhile, youโ€™re monitoring the proceedings with an insect drone.
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๊ทธ๋Ÿฌ๋Š” ๋™์•ˆ ์—ฌ๋Ÿฌ๋ถ„์€ ๊ณค์ถฉ ๋“œ๋ก ์œผ๋กœ ์ง„ํ–‰ ์ƒํ™ฉ์„ ๊ฐ์‹œํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.
01:27
If you can figure out who has swapped out a fairly dealt card with a new one,
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๋ˆ„๊ฐ€ ๋ฐ›์€ ์นด๋“œ๋ฅผ ์ƒˆ ์นด๋“œ๋กœ ๋ฐ”๊ฟจ๋Š”์ง€ ์•Œ์•„๋‚ธ๋‹ค๋ฉด
01:32
you can identify the assassins and alert your agent through her earpiece.
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์•”์‚ด์ž๋ฅผ ์ฐพ์•„๋‚ด๊ณ  ์ด์–ดํฐ์œผ๋กœ ์š”์›์—๊ฒŒ ์•Œ๋ฆด ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
01:37
The game begins.
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๊ฒŒ์ž„์ด ์‹œ์ž‘๋ฉ๋‹ˆ๋‹ค.
01:38
Your drone doesnโ€™t catch anyoneโ€™s sleight of hand,
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์—ฌ๋Ÿฌ๋ถ„์˜ ๋“œ๋ก ์€ ๋ˆ„๊ตฐ๊ฐ€์˜ ์†๊ธฐ์ˆ ์„ ์žก์•„๋‚ผ ์ˆ˜๋Š” ์—†์ง€๋งŒ
01:41
but it does manage to get a look at the cards each player holds.
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๊ฐ ์ฐธ๊ฐ€์ž๊ฐ€ ๋“ค๊ณ  ์žˆ๋Š” ์นด๋“œ๋“ค์€ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
01:46
Suddenly โ€” disaster.
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๊ฐ‘์ž๊ธฐ ๋ฌธ์ œ๊ฐ€ ์ƒ๊น๋‹ˆ๋‹ค.
01:47
Someone swats the drone,
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๋ˆ„๊ตฐ๊ฐ€๊ฐ€ ๋“œ๋ก ์„ ์ณค๊ณ 
01:49
breaking your video feed before the reveal of the shared cards.
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๊ณต์œ  ์นด๋“œ๊ฐ€ ๊ณต๊ฐœ๋˜๊ธฐ ์ „์— ์˜์ƒ์ด ๋ฉˆ์ถฅ๋‹ˆ๋‹ค.
01:53
It goes into emergency mode and is just operational enough
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๋“œ๋ก ์€ ๋น„์ƒ ๋ชจ๋“œ๋กœ ์ „ํ™˜๋˜๊ณ 
๊ณต์œ  ์นด๋“œ ์„ธ ์žฅ์— ๋Œ€ํ•ด ์ด๋Ÿฐ ๋ฐ์ดํ„ฐ๋ฅผ ๊ฐ„์‹ ํžˆ ์ „์†กํ•œ ํ›„
01:57
to send the following string of data about those three shared cards
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02:01
before shutting down for good.
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์™„์ „ํžˆ ๊บผ์ ธ ๋ฒ„๋ฆฝ๋‹ˆ๋‹ค.
02:03
And thatโ€™s it; youโ€™ve lost your eyes and ears in the room.
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๊ทธ๋ ‡๊ฒŒ ํ•ด์„œ ๋ฐฉ ์•ˆ์— ์žˆ๋˜ ์—ฌ๋Ÿฌ๋ถ„์˜ ๋ˆˆ๊ณผ ๊ท€๊ฐ€ ์‚ฌ๋ผ์กŒ์Šต๋‹ˆ๋‹ค.
02:07
Your spy canโ€™t see anyone elseโ€™s cards or tell you anything,
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์š”์›์€ ๋‹ค๋ฅธ ์‚ฌ๋žŒ์˜ ์นด๋“œ๋ฅผ ๋ณด๊ฑฐ๋‚˜ ๋ฌด์–ธ๊ฐ€๋ฅผ ์•Œ๋ ค ์ค„ ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค.
02:11
so itโ€™s up to you to figure this out, and fast.
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๊ทธ๋Ÿฌ๋‹ˆ ๋น ๋ฅด๊ฒŒ ์•Œ์•„๋‚ด๋Š” ๊ฒƒ์€ ์—ฌ๋Ÿฌ๋ถ„์˜ ๋ชซ์ž…๋‹ˆ๋‹ค.
02:15
Who are the assassins?
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์•”์‚ด์ž๋Š” ๋ˆ„๊ตฌ์ผ๊นŒ์š”?
02:17
Pause here to figure it out yourself.
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์—ฌ๊ธฐ์„œ ๋ฉˆ์ถ”๊ณ  ์ƒ๊ฐํ•ด ๋ณด์„ธ์š”.
02:19
Answer in 3
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์ •๋‹ต 3์ดˆ ์ „
02:20
Answer in 2
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์ •๋‹ต 2์ดˆ ์ „
02:22
Answer in 1
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์ •๋‹ต 1์ดˆ ์ „
02:24
You can start by combining the first two rules.
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์ฒ˜์Œ ๋‘ ๊ทœ์น™์„ ์กฐํ•ฉํ•˜์—ฌ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
02:27
The second tells us that there are at least two queens,
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๋‘ ๋ฒˆ์งธ ๊ทœ์น™์— ๋”ฐ๋ฅด๋ฉด ํ€ธ์ด ์ตœ์†Œ ๋‘ ์žฅ ์žˆ๊ณ 
02:30
and the first that there's at least one king.
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์ฒซ ๋ฒˆ์งธ ๊ทœ์น™์— ๋”ฐ๋ฅด๋ฉด ํ‚น์ด ์ ์–ด๋„ ํ•œ ์žฅ ์žˆ์Šต๋‹ˆ๋‹ค.
02:33
So we must have two queens and a king.
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๊ทธ๋Ÿฌ๋‹ˆ ๋‘ ์žฅ์€ ํ€ธ, ํ•œ ์žฅ์€ ํ‚น์ด์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
02:36
The first rule then tells us that the king is either in the middle or the left.
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์ฒซ ๋ฒˆ์งธ ๊ทœ์น™์— ๋”ฐ๋ฅด๋ฉด ํ‚น์€ ์ค‘๊ฐ„ ํ˜น์€ ์™ผ์ชฝ์— ์žˆ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
02:41
Thatโ€™s all we can do for now, so letโ€™s look at the suits.
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์ง€๊ธˆ ํ•  ์ˆ˜ ์žˆ๋Š” ๊ฒƒ์€ ์—ฌ๊ธฐ๊นŒ์ง€์ด๋‹ˆ ๋‹ค๋ฅธ ๊ทœ์น™์„ ์‚ดํŽด๋ด…์‹œ๋‹ค.
02:44
By the same logic, we know that there must be two spades and one heart.
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๊ฐ™์€ ๋…ผ๋ฆฌ๋กœ ์ŠคํŽ˜์ด๋“œ ๋‘ ์žฅ๊ณผ ํ•˜ํŠธ ํ•œ ์žฅ์ด ์žˆ์Œ์„ ์•Œ์•„๋ƒ…๋‹ˆ๋‹ค.
02:49
And by the third rule, that heart must be in the middle or on the right.
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๊ทธ๋ฆฌ๊ณ  ์„ธ ๋ฒˆ์งธ ๊ทœ์น™์— ๋”ฐ๋ฅด๋ฉด ํ•˜ํŠธ๋Š” ์ค‘๊ฐ„ ํ˜น์€ ์˜ค๋ฅธ์ชฝ์— ์žˆ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
02:54
We can now make a table with our four possibilities.
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์ด์ œ ๋„ค ๊ฐ€์ง€ ๊ฐ€๋Šฅ์„ฑ์œผ๋กœ ํ‘œ๋ฅผ ๋งŒ๋“ค์–ด ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
02:57
We can eliminate this one,
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์ด๊ฒƒ์€ ๋ฐฐ์ œํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
02:59
because it would require the deck having two queens of spades.
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์นด๋“œ ํ•œ ๋ฒŒ์— ์ŠคํŽ˜์ด๋“œ ํ€ธ์ด ๋‘ ์žฅ ์žˆ์ง€๋Š” ์•Š์œผ๋‹ˆ๊นŒ์š”.
03:02
We canโ€™t rule out any other options, but we donโ€™t actually need to;
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๋‹ค๋ฅธ ๊ฒƒ๋“ค์€ ์ œ์™ธํ•  ์ˆ˜ ์—†์ง€๋งŒ ์‚ฌ์‹ค ๊ผญ ๊ทธ๋Ÿด ํ•„์š”๋„ ์—†์Šต๋‹ˆ๋‹ค.
03:07
in every case, the three cards are the king of spades, the queen of hearts,
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๋ชจ๋“  ๊ฒฝ์šฐ์—์„œ ์นด๋“œ ์„ธ ์žฅ์€ ์ŠคํŽ˜์ด๋“œ์˜ ํ‚น๊ณผ ํ€ธ, ํ•˜ํŠธ์˜ ํ€ธ์ด๋ฉฐ
03:11
and the queen of spades, in different orders.
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์ˆœ์„œ๋งŒ ๋‹ค๋ฅผ ๋ฟ์ž…๋‹ˆ๋‹ค.
03:15
And it just so happens that each of these players holds one of those cards.
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์šฐ์—ฐํžˆ๋„ ๊ฐ ์ฐธ๊ฐ€์ž๋“ค์ด ํ•œ ์žฅ์”ฉ์„ ๊ฐ€์ง€๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.
03:19
So, theyโ€™re the assassins, right?
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๊ทธ๋Ÿฌ๋‹ˆ๊นŒ ์ €๋“ค์ด ์•”์‚ด์ž์ฃ ?
03:21
Well, hold on, thereโ€™s something odd.
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์ž ๊น๋งŒ์š”, ๋ญ”๊ฐ€ ์ด์ƒํ•ฉ๋‹ˆ๋‹ค.
03:23
Player 2 and the agent both hold the same card.
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2๋ฒˆ ์ฐธ๊ฐ€์ž์™€ ์š”์›์ด ๊ฐ™์€ ์นด๋“œ๋ฅผ ๋“ค๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.
03:27
So, one of those must be a signature assassin card.
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๋”ฐ๋ผ์„œ ๊ทธ์ค‘ ํ•˜๋‚˜๋Š” ์•”์‚ด์ž์˜ ๊ณ ์œ ํ•œ ์นด๋“œ์ž…๋‹ˆ๋‹ค.
03:31
But you know from your Intel that thereโ€™s at least one victim who is not the agent.
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ํ•˜์ง€๋งŒ ์—ฌ๋Ÿฌ๋ถ„์˜ ์ •๋ณด์›์— ๋”ฐ๋ฅด๋ฉด
์š”์›์ด ์•„๋‹Œ ํ”ผํ•ด์ž๊ฐ€ ์ตœ์†Œ ํ•œ ๋ช…์€ ์žˆ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
03:36
How can that be?
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์–ด๋–ป๊ฒŒ ๊ทธ๋Ÿด ์ˆ˜ ์žˆ์„๊นŒ์š”?
03:37
Oh, no. Thereโ€™s only one possibility:
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์•„, ์ด๋Ÿด ์ˆ˜๊ฐ€, ๊ฐ€๋Šฅ์„ฑ์€ ํ•œ ๊ฐ€์ง€๋ฟ์ž…๋‹ˆ๋‹ค.
03:40
your spy is the assassin known as the king of diamonds,
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์—ฌ๋Ÿฌ๋ถ„์˜ ์š”์›์ด ๋‹ค์ด์•„๋ชฌ๋“œ ํ‚น์œผ๋กœ ์•Œ๋ ค์ง„ ์•”์‚ด์ž์ด๊ณ 
03:44
and sheโ€™s been playing you this whole time.
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๋‚ด๋‚ด ์—ฌ๋Ÿฌ๋ถ„์„ ๊ฐ€์ง€๊ณ  ๋†€์•˜๋˜ ๊ฒ๋‹ˆ๋‹ค.
03:47
The only victim is player 2.
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2๋ฒˆ ์ฐธ๊ฐ€์ž๊ฐ€ ์œ ์ผํ•œ ํ”ผํ•ด์ž์ž…๋‹ˆ๋‹ค.
03:50
You rush in, grab hold of player 2 just before the bidding ends,
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์—ฌ๋Ÿฌ๋ถ„์€ ๋ฒ ํŒ…์ด ๋ง‰ ๋๋‚˜๊ธฐ ์ „์— ๋›ฐ์–ด๋“ค์–ด๊ฐ€
2๋ฒˆ ์ฐธ๊ฐ€์ž๋ฅผ ๋‚š์•„์ฑ„์„œ ๋„๋ง์ณ ๋‚˜์˜ต๋‹ˆ๋‹ค.
03:53
and make a run for it.
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03:55
On your way out, you lock eyes with your backstabbing partner.
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๋‚˜๊ฐ€๋Š” ๊ธธ์— ์—ฌ๋Ÿฌ๋ถ„์€ ๋’คํ†ต์ˆ˜๋ฅผ ์นœ ๋™๋ฃŒ๋ฅผ ๋…ธ๋ ค๋ด…๋‹ˆ๋‹ค.
03:58
You search her features, desperate for any sign of remorse or apology.
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ํ›„ํšŒ๋‚˜ ๋ฏธ์•ˆํ•จ์˜ ๊ฐ์ •์ด ์žˆ๋Š”์ง€ ๊ทธ๋…€๋ฅผ ์‚ดํŽด๋ด…๋‹ˆ๋‹ค.
04:03
All you get back is a poker face.
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๊ทธ๋Ÿฌ๋‚˜ ๋Œ์•„์˜ค๋Š” ๊ฑด ๋ฌดํ‘œ์ •ํ•œ ์–ผ๊ตด๋ฟ์ž…๋‹ˆ๋‹ค.
์ด ์›น์‚ฌ์ดํŠธ ์ •๋ณด

์ด ์‚ฌ์ดํŠธ๋Š” ์˜์–ด ํ•™์Šต์— ์œ ์šฉํ•œ YouTube ๋™์˜์ƒ์„ ์†Œ๊ฐœํ•ฉ๋‹ˆ๋‹ค. ์ „ ์„ธ๊ณ„ ์ตœ๊ณ ์˜ ์„ ์ƒ๋‹˜๋“ค์ด ๊ฐ€๋ฅด์น˜๋Š” ์˜์–ด ์ˆ˜์—…์„ ๋ณด๊ฒŒ ๋  ๊ฒƒ์ž…๋‹ˆ๋‹ค. ๊ฐ ๋™์˜์ƒ ํŽ˜์ด์ง€์— ํ‘œ์‹œ๋˜๋Š” ์˜์–ด ์ž๋ง‰์„ ๋”๋ธ” ํด๋ฆญํ•˜๋ฉด ๊ทธ๊ณณ์—์„œ ๋™์˜์ƒ์ด ์žฌ์ƒ๋ฉ๋‹ˆ๋‹ค. ๋น„๋””์˜ค ์žฌ์ƒ์— ๋งž์ถฐ ์ž๋ง‰์ด ์Šคํฌ๋กค๋ฉ๋‹ˆ๋‹ค. ์˜๊ฒฌ์ด๋‚˜ ์š”์ฒญ์ด ์žˆ๋Š” ๊ฒฝ์šฐ ์ด ๋ฌธ์˜ ์–‘์‹์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌธ์˜ํ•˜์‹ญ์‹œ์˜ค.

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