The math and magic of origami | Robert Lang

774,495 views ใƒป 2008-07-31

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

๋ฒˆ์—ญ: Young Lyoo ๊ฒ€ํ† : Taegon Kim
00:18
My talk is "Flapping Birds and Space Telescopes."
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์ €๋Š” "์ข…์ดํ•™๊ณผ ์šฐ์ฃผ ๋ง์›๊ฒฝ"์— ๋Œ€ํ•ด ๋ง์”€ ๋“œ๋ฆฌ๋ ค ํ•ฉ๋‹ˆ๋‹ค.
00:21
And you would think that should have nothing to do with one another,
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์ง€๊ธˆ์€ ์ด ๋‘ ๊ฐ€์ง€๊ฐ€ ์„œ๋กœ ์•„๋ฌด ์ƒ๊ด€์ด ์—†๋‹ค๊ณ  ์ƒ๊ฐํ•˜์‹œ๊ฒ ์ง€๋งŒ
00:23
but I hope by the end of these 18 minutes,
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18๋ถ„ ํ›„ ๊ฐ•์—ฐ์ด ๋๋‚  ๋•Œ ์ฏค์—๋Š”
00:26
you'll see a little bit of a relation.
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์•ฝ๊ฐ„์˜ ์—ฐ๊ด€์„ฑ์„ ๋ณด์‹œ๊ฒŒ ๋  ๊ฒ๋‹ˆ๋‹ค.
00:29
It ties to origami. So let me start.
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๊ทธ ์ ‘์ ์€ ์ข…์ด์ ‘๊ธฐ์ž…๋‹ˆ๋‹ค.
00:30
What is origami?
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์‹œ์ž‘ํ•˜์ง€์š”. ์ข…์ด์ ‘๊ธฐ๋ž€ ๋ญ˜๊นŒ์š”?
00:32
Most people think they know what origami is. It's this:
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๋Œ€๋ถ€๋ถ„์˜ ์‚ฌ๋žŒ๋“ค์€ ์ข…์ด์ ‘๊ธฐ๋ฅผ ์•ˆ๋‹ค๊ณ  ์ƒ๊ฐํ•ฉ๋‹ˆ๋‹ค.
00:35
flapping birds, toys, cootie catchers, that sort of thing.
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์ข…์ดํ•™, ์žฅ๋‚œ๊ฐ, ๋™์„œ๋‚จ๋ถ ๊ฐ™์€ ๊ฒƒ์œผ๋กœ ์•Œ๊ณ  ์žˆ์ง€์š”.
00:38
And that is what origami used to be.
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๊ณผ๊ฑฐ์˜ ์ข…์ด์ ‘๊ธฐ๋Š” ๊ทธ๋žฌ์Šต๋‹ˆ๋‹ค.
00:40
But it's become something else.
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ํ•˜์ง€๋งŒ, ์ด์   ์ „ํ˜€ ๋‹ค๋ฅธ ๊ฒƒ์œผ๋กœ ๊ฑฐ๋“ญ๋‚ฌ์Šต๋‹ˆ๋‹ค.
00:42
It's become an art form, a form of sculpture.
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์กฐํ˜•๋ฏธ์ˆ ์˜ ํ•œ ํ˜•ํƒœ๊ฐ€ ๋˜์—ˆ์ฃ .
00:44
The common theme -- what makes it origami --
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์ข…์ด์ ‘๊ธฐ๋Š” ์ ‘๊ธฐ์™€
00:46
is folding is how we create the form.
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ํ˜•ํƒœ๋ฅผ ๋งŒ๋“œ๋Š” ๋ฐฉ๋ฒ•์œผ๋กœ ์ด๋ฃจ์–ด์ง‘๋‹ˆ๋‹ค.
00:50
You know, it's very old. This is a plate from 1797.
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์ข…์ด์ ‘๊ธฐ์˜ ์—ญ์‚ฌ๋Š” ๊น๋‹ˆ๋‹ค. ์—ฌ๊ธฐ 1797๋…„์— ๊ทธ๋ ค์ง„ ๊ทธ๋ฆผ์„ ๋ณด๋ฉด
00:53
It shows these women playing with these toys.
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์—ฌ์„ฑ๋“ค์ด ์žฅ๋‚œ๊ฐ์„ ๊ฐ€์ง€๊ณ  ๋…ธ๋Š”๋ฐ์š”.
00:55
If you look close, it's this shape, called a crane.
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์ž์„ธํžˆ ๋ณด๋ฉด ์ข…์ดํ•™์ธ ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
00:58
Every Japanese kid
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์ผ๋ณธ์˜ ์–ด๋ฆฐ์ด๋“ค์€ ๋ชจ๋‘
01:00
learns how to fold that crane.
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์ข…์ดํ•™ ์ ‘๋Š” ๋ฒ•์„ ๋ฐฐ์›๋‹ˆ๋‹ค.
01:02
So this art has been around for hundreds of years,
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์ด ๊ธฐ์ˆ ์€ ๋ฒŒ์จ ์ˆ˜๋ฐฑ ๋…„์ด๋‚˜ ๋œ ๊ฒƒ์ด์ฃ .
01:04
and you would think something
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์•„๋งˆ๋„ ์—ฌ๋Ÿฌ๋ถ„์€ ์ ‘๊ธฐ๋งŒ ํ•˜๋Š”
01:06
that's been around that long -- so restrictive, folding only --
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์ด๋ ‡๊ฒŒ ๋‹จ์ˆœํ•œ ๊ธฐ์ˆ ์ด ๊ทธ๋ฆฌ ์˜ค๋ž˜๋˜์—ˆ๋‹ค๋ฉด ํ•  ์ˆ˜ ์žˆ๋Š” ์ผ์€
01:09
everything that could be done has been done a long time ago.
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์ด๋ฏธ ๋‹ค ํ•ด๋ดค์„ ๊ฑฐ๋ผ๊ณ  ์ƒ๊ฐํ•˜์‹ค ๊ฒ๋‹ˆ๋‹ค.
01:12
And that might have been the case.
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ํ•œ๋•Œ๋Š” ์‚ฌ์‹ค์ด๊ธฐ๋„ ํ–ˆ์„ ๊ฒƒ์ด๊ตฌ์š”.
01:14
But in the twentieth century,
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ํ•˜์ง€๋งŒ, 20์„ธ๊ธฐ์—
01:16
a Japanese folder named Yoshizawa came along,
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์š”์‹œ์ž์™€๋ผ๋Š” ์ผ๋ณธ์˜ ์ข…์ด์ ‘๊ธฐ ์žฅ์ธ์ด ๋‚˜ํƒ€๋‚˜
01:19
and he created tens of thousands of new designs.
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์ˆ˜๋งŒ ๊ฐ€์ง€์˜ ์ƒˆ๋กœ์šด ๋””์ž์ธ์„ ์ฐฝ์กฐํ•ด๋ƒˆ์Šต๋‹ˆ๋‹ค.
01:22
But even more importantly, he created a language,
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๊ทธ๋Ÿฌ๋‚˜, ๋” ์ค‘์š”ํ•œ ์‚ฌ์‹ค์€
01:25
a way we could communicate,
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๊ทธ๊ฐ€ ์ ์„ , ์‹ค์„ ๊ณผ ํ™”์‚ดํ‘œ๋กœ ์ด๋ฃจ์–ด์ง„
01:27
a code of dots, dashes and arrows.
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์ข…์ด์ ‘๊ธฐ์˜ ์–ธ์–ด๋ฅผ ๋งŒ๋“ค์—ˆ๋‹ค๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
01:29
Harkening back to Susan Blackmore's talk,
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์ˆ˜์ž” ๋ธ”๋ž™๋ชจ์–ด์˜ ๋ง์„ ๋นŒ๋ฆฌ์ž๋ฉด,
01:31
we now have a means of transmitting information
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์šฐ๋ฆฌ๋Š” ์„ธ์Šต๊ณผ ์„ ํƒ์„ ํ†ตํ•ด
01:33
with heredity and selection,
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์ •๋ณด๋ฅผ ์ „๋‹ฌํ•  ์ˆ˜ ์žˆ๋Š” ์ˆ˜๋‹จ์„ ๊ฐ€์ง€๊ฒŒ ๋œ ๊ฒƒ์ด์ฃ .
01:36
and we know where that leads.
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์ด๋กœ ์ธํ•ด ์–ด๋–ค ๊ฒฐ๊ณผ๊ฐ€ ๋‚˜์˜ฌ์ง€ ์•„์‹œ๊ฒ ์ฃ ?
01:38
And where it has led in origami
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๊ทธ ๋•๋ถ„์— ์ข…์ด์ ‘๊ธฐ๋กœ
01:40
is to things like this.
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์ด๋Ÿฐ ๊ฒƒ๋“ค์ด ๊ฐ€๋Šฅํ•ด์กŒ์Šต๋‹ˆ๋‹ค.
01:42
This is an origami figure --
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์ด๊ฒƒ์€ ์ข…์ด์ ‘๊ธฐ ์ž‘ํ’ˆ์ž…๋‹ˆ๋‹ค.
01:44
one sheet, no cuts, folding only, hundreds of folds.
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ํ•œ ์žฅ์˜ ์ข…์ด๋ฅผ ์ž๋ฅด์ง€ ์•Š๊ณ  ์ˆ˜๋ฐฑ ๋ฒˆ ์ ‘๊ธฐ๋งŒ ํ•œ ์ž‘ํ’ˆ์ด์ฃ .
01:50
This, too, is origami,
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์ด๊ฒƒ๋„ ์ข…์ด์ ‘๊ธฐ ์ž‘ํ’ˆ์ธ๋ฐ
01:52
and this shows where we've gone in the modern world.
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ํ˜„๋Œ€ ์ข…์ด์ ‘๊ธฐ์˜ ์ •์ ์„ ๋ณด์—ฌ์ค๋‹ˆ๋‹ค.
01:55
Naturalism. Detail.
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์ž์—ฐ์ฃผ์˜์™€ ์„ธ๋ถ€ ๋ฌ˜์‚ฌ.
01:57
You can get horns, antlers --
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๋‹ค์–‘ํ•œ ๋ฟ”์„ ๋‚˜ํƒ€๋‚ผ ์ˆ˜ ์žˆ๊ณ 
01:59
even, if you look close, cloven hooves.
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์ž์„ธํžˆ ๋ณด๋ฉด ๊ฐˆ๋ผ์ง„ ๋ฐœ๊ตฝ๋„ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
02:01
And it raises a question: what changed?
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์ด์ œ ๊ถ๊ธˆํ•ด์ง€์‹œ๊ฒ ์ฃ . ๋ฌด์—‡์ด ๋‹ฌ๋ผ์ง„๊ฑธ๊นŒ?
02:04
And what changed is something
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๋‹ฌ๋ผ์ง„ ๊ฒƒ์€ ์ผ๋ฐ˜์ ์œผ๋กœ๋Š”
02:06
you might not have expected in an art,
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์˜ˆ์ˆ ์—์„œ ๊ธฐ๋Œ€ํ•˜์ง€ ์•Š์•˜๋˜ ๊ทธ๊ฒƒ์ž…๋‹ˆ๋‹ค.
02:09
which is math.
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๋ฐ”๋กœ ์ˆ˜ํ•™์ด์ฃ .
02:11
That is, people applied mathematical principles
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์ฆ‰, ์‚ฌ๋žŒ๋“ค์ด ์ˆ˜ํ•™ ์ด๋ก ์„
02:13
to the art,
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์˜ˆ์ˆ ์— ์ ์šฉ์‹œ์ผœ
02:16
to discover the underlying laws.
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์ˆจ๊ฒจ์ง„ ๊ทœ์น™์„ ๋ฐœ๊ฒฌํ•˜๋Š” ๊ฒ๋‹ˆ๋‹ค.
02:18
And that leads to a very powerful tool.
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๋•๋ถ„์— ์ˆ˜ํ•™์€ ์•„์ฃผ ๊ฐ•๋ ฅํ•œ ๋„๊ตฌ๊ฐ€ ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.
02:21
The secret to productivity in so many fields --
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์ข…์ด์ ‘๊ธฐ๋ฅผ ๋น„๋กฏํ•œ ์—ฌ๋Ÿฌ ๋ถ„์•ผ์—์„œ
02:23
and in origami --
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์ƒ์‚ฐ์„ฑ์˜ ๋น„๋ฒ•์€
02:25
is letting dead people do your work for you.
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์กฐ์ƒ๋‹˜๋“ค์ด ์—ฌ๋Ÿฌ๋ถ„ ๋Œ€์‹  ์ผํ•˜๊ฒŒ ํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
02:28
(Laughter)
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(์›ƒ์Œ)
02:29
Because what you can do is
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์—ฌ๋Ÿฌ๋ถ„์ด ํ•  ์ผ์€
02:31
take your problem,
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์—ฌ๋Ÿฌ๋ถ„์˜ ๋ฌธ์ œ๋ฅผ
02:33
and turn it into a problem that someone else has solved,
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์˜ˆ์ „์— ๋ˆ„๊ฐ€ ํ•ด๊ฒฐํ–ˆ๋˜ ๋ฌธ์ œ๋กœ ๋ณ€ํ™˜ํ•˜์—ฌ
02:36
and use their solutions.
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๊ทธ๋“ค์˜ ํ•ด๋‹ต์„ ์‚ฌ์šฉํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
02:38
And I want to tell you how we did that in origami.
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์ด ๊ณผ์ •์ด ์ข…์ด์ ‘๊ธฐ์—๋„ ์ ์šฉ๋œ๋‹ค๋Š” ๊ฑธ ๋ณด์—ฌ๋“œ๋ฆฌ๊ฒ ์Šต๋‹ˆ๋‹ค.
02:41
Origami revolves around crease patterns.
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์ข…์ด์ ‘๊ธฐ๋Š” ์ ‘๊ธฐ ํŒจํ„ด์ด ์ค‘์‹ฌ์ž…๋‹ˆ๋‹ค.
02:43
The crease pattern shown here is the underlying blueprint
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์ง€๊ธˆ ๋ณด์‹œ๋Š” ์ ‘๊ธฐ ํŒจํ„ด์€ ์–ด๋–ค ์ข…์ด์ ‘๊ธฐ
02:46
for an origami figure.
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์ž‘ํ’ˆ์„ ์œ„ํ•œ ์ฒญ์‚ฌ์ง„์ž…๋‹ˆ๋‹ค.
02:48
And you can't just draw them arbitrarily.
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์ฒญ์‚ฌ์ง„์€ ์ž„์˜๋กœ ๊ทธ๋ฆด ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค.
02:50
They have to obey four simple laws.
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๋ฐ˜๋“œ์‹œ ๋„ค ๊ฐœ์˜ ๋‹จ์ˆœํ•œ ๋ฒ•์น™์„ ๋”ฐ๋ผ์•ผํ•˜๋Š”๋ฐ
02:53
And they're very simple, easy to understand.
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์•„์ฃผ ๋‹จ์ˆœํ•˜๋ฉฐ ์ดํ•ดํ•˜๊ธฐ๋„ ์‰ฝ์Šต๋‹ˆ๋‹ค.
02:55
The first law is two-colorability. You can color any crease pattern
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์ฒซ๋ฒˆ์งธ ๋ฒ•์น™์€ ๋‘ ๊ฐ€์ง€ ์ƒ‰์ƒ๋งŒ ์‚ฌ์šฉํ•ด์•ผ ํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค.
02:58
with just two colors without ever having
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์ ‘๊ธฐ ํŒจํ„ด์€ ๋‘ ๊ฐ€์ง€ ์ƒ‰์ƒ๋งŒ ์‚ฌ์šฉํ•˜์—ฌ
03:00
the same color meeting.
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๊ฐ™์€ ์ƒ‰์ƒ์ด ์ด์›ƒํ•˜์ง€ ์•Š๋„๋ก ๋งŒ๋“ญ๋‹ˆ๋‹ค.
03:03
The directions of the folds at any vertex --
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์–ด๋Š ๊ผญ์ง“์ ์—์„œ๋“  ์ ‘๋Š” ๋ฐฉํ–ฅ์˜ ํšŸ์ˆ˜--
03:06
the number of mountain folds, the number of valley folds --
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๊ทธ๋Ÿฌ๋‹ˆ๊นŒ ์‚ฐ์ ‘๊ธฐ์™€ ๊ณ„๊ณก์ ‘๊ธฐ ํšŸ์ˆ˜์˜ ์ฐจ๋Š”
03:09
always differs by two. Two more or two less.
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ํ•ญ์ƒ 2์ž…๋‹ˆ๋‹ค. ๋‘ ๋ฒˆ ๋”, ๋˜๋Š” ๋‘ ๋ฒˆ ๋œ ์ ‘์ฃ .
03:11
Nothing else.
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์˜ˆ์™ธ๋Š” ์—†์Šต๋‹ˆ๋‹ค.
03:13
If you look at the angles around the fold,
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์ ‘์€ ๋ชจ์„œ๋ฆฌ์˜ ๊ฐ์„ ์‚ดํŽด๋ณผ ๋•Œ
03:15
you find that if you number the angles in a circle,
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์› ๋‚ด๋ถ€ ๊ฐ์— ๋Œ์•„๊ฐ€๋ฉฐ ์ˆซ์ž๋ฅผ ๋งค๊ฒจ๋ณด๋ฉด
03:17
all the even-numbered angles add up to a straight line,
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๋ชจ๋“  ์ง์ˆ˜ ๊ฐ์˜ ํ•ฉ์€ 180๋„๊ฐ€ ๋˜๊ณ 
03:20
all the odd-numbered angles add up to a straight line.
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๋ชจ๋“  ํ™€์ˆ˜ ๊ฐ์˜ ํ•ฉ๋„ 180๋„๊ฐ€ ๋˜๋Š” ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
03:23
And if you look at how the layers stack,
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๊ทธ๋ฆฌ๊ณ  ์ธต์ด ์Œ“์ด๋Š” ๊ทœ์น™์„ ๋ณด๋ฉด
03:25
you'll find that no matter how you stack folds and sheets,
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์ข…์ด์™€ ์ ‘ํžŒ ์ข…์ด๋ฅผ ์–ด๋–ค ๋ฐฉ์‹์œผ๋กœ ์Œ“์•„๋„
03:28
a sheet can never
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์ข…์ด๋Š” ์ ˆ๋Œ€๋กœ
03:30
penetrate a fold.
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์ ‘ํžŒ ๋ถ€๋ถ„์„ ํ†ต๊ณผํ•  ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค.
03:32
So that's four simple laws. That's all you need in origami.
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์ด์ƒ์ด ์ข…์ด์ ‘๊ธฐ์˜ ๋‹จ์ˆœํ•œ ๋ฒ•์น™ ๋„ค ๊ฐ€์ง€์ž…๋‹ˆ๋‹ค.
03:35
All of origami comes from that.
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๋ชจ๋“  ์ข…์ด์ ‘๊ธฐ๋Š” ๊ฑฐ๊ธฐ์„œ๋ถ€ํ„ฐ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
03:37
And you'd think, "Can four simple laws
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"4๊ฐœ์˜ ๊ฐ„๋‹จํ•œ ๋ฒ•์น™์œผ๋กœ ๊ทธ๋ ‡๊ฒŒ ๋ณต์žกํ•œ ๊ฒƒ์„
03:39
give rise to that kind of complexity?"
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๋งŒ๋“ค ์ˆ˜ ์žˆ๋‚˜?"๋ผ๋Š” ์ƒ๊ฐ์ด ๋“ค๊ฒ ์ฃ .
03:41
But indeed, the laws of quantum mechanics
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ํ•˜์ง€๋งŒ ์‚ฌ์‹ค์ž…๋‹ˆ๋‹ค. ์–‘์ž ์—ญํ•™์˜ ๋ฒ•์น™๋„
03:43
can be written down on a napkin,
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๋ƒ…ํ‚จ ํ•˜๋‚˜์— ๋‹ค ์“ธ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
03:45
and yet they govern all of chemistry,
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์–‘์ž์—ญํ•™์ด ๋ชจ๋“  ํ™”ํ•™๊ณผ ๋ชจ๋“  ์ƒ๋ช…,
03:47
all of life, all of history.
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๋ชจ๋“  ์—ญ์‚ฌ๋ฅผ ์ง€๋ฐฐํ•˜๋Š”๋ฐ๋„ ๋ง์ด์ฃ .
03:49
If we obey these laws,
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์ด ๊ทœ์น™๋“ค์„ ๋”ฐ๋ฅด๋ฉด ์šฐ๋ฆฌ๋Š”
03:51
we can do amazing things.
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๋†€๋ผ์šด ์ผ์„ ํ•ด๋‚ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
03:53
So in origami, to obey these laws,
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์šฐ๋ฆฌ๋Š” ์ข…์ด์ ‘๊ธฐ๋ฅผ ํ•  ๋•Œ ๊ทœ์น™์„ ๋”ฐ๋ฅด๊ธฐ ์œ„ํ•ด
03:55
we can take simple patterns --
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์ด๊ฒƒ๊ณผ ๊ฐ™์ด ์ ‘๊ธฐ ํŒจํ„ด์ด ๋ฐ˜๋ณต๋˜๋Š”
03:57
like this repeating pattern of folds, called textures --
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ํ…์Šค์ณ๋ผ ๋ถˆ๋ฆฌ๋Š” ๋‹จ์ˆœํ•œ ํŒจํ„ด์—์„œ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
04:00
and by itself it's nothing.
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์ด๊ฒƒ๋งŒ์œผ๋กœ๋Š” ์•„๋ฌด๊ฒƒ๋„ ์•„๋‹ˆ์ฃ .
04:02
But if we follow the laws of origami,
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ํ•˜์ง€๋งŒ ์ข…์ด์ ‘๊ธฐ์˜ ๋ฒ•์น™์„ ๋”ฐ๋ฅด๋ฉด
04:04
we can put these patterns into another fold
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ํ•˜๋‚˜์˜ ๋งค์šฐ ๋‹จ์ˆœํ•œ ํŒจํ„ด์ด๋ผ๋„
04:07
that itself might be something very, very simple,
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์กฐ๊ธˆ ๋‹ค๋ฅด๊ฒŒ ์‘์šฉ์‹œํ‚ค๋ฉด
04:09
but when we put it together,
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์ „ํ˜€ ๋‹ค๋ฅธ ์ƒˆ๋กœ์šด ์ž‘ํ’ˆ์ด ํƒ„์ƒํ•ฉ๋‹ˆ๋‹ค.
04:11
we get something a little different.
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์ „ํ˜€ ๋‹ค๋ฅธ ์ƒˆ๋กœ์šด ์ž‘ํ’ˆ์ด ํƒ„์ƒํ•ฉ๋‹ˆ๋‹ค.
04:13
This fish, 400 scales --
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์ด ๋ฌผ๊ณ ๊ธฐ๋Š” 400๊ฐœ์˜ ๋น„๋Š˜์ด ์žˆ์Šต๋‹ˆ๋‹ค.
04:16
again, it is one uncut square, only folding.
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์ด๊ฒƒ ์—ญ์‹œ ์ž๋ฅด์ง€ ์•Š๊ณ  ์ ‘๊ธฐ๋งŒ ํ•œ ์ข…์ด ํ•œ ์žฅ์ด์ง€์š”.
04:20
And if you don't want to fold 400 scales,
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๋น„๋Š˜์„ 400๊ฐœ ์ ‘๊ธฐ ์‹ซ๋‹ค๋ฉด,
04:22
you can back off and just do a few things,
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์กฐ๊ธˆ ๋œ ๋ณต์žกํ•œ
04:24
and add plates to the back of a turtle, or toes.
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๊ฑฐ๋ถ์ด ๋“ฑ๊ป์งˆ์ด๋‚˜ ๋ฐœ๊ฐ€๋ฝ์„ ๋งŒ๋“ค์–ด๋„ ๋ฉ๋‹ˆ๋‹ค.
04:27
Or you can ramp up and go up to 50 stars
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๋” ๋ณต์žกํ•œ ๊ฑธ ์›ํ•˜๋ฉด, 50๊ฐœ์˜ ๋ณ„๊ณผ
04:30
on a flag, with 13 stripes.
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13๊ฐœ์˜ ์ค„๋กœ ์ด๋ค„์ง„ ๊นƒ๋ฐœ์„ ๋งŒ๋“ค์–ด๋„ ๋˜๊ณ ์š”.
04:33
And if you want to go really crazy,
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์ •๋ง ๋ฏธ์น˜๊ณ  ์‹ถ๋‹ค๋ฉด
04:36
1,000 scales on a rattlesnake.
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๋ฐฉ์šธ๋ฑ€์˜ ๋น„๋Š˜ 1000๊ฐœ๋„ ๋„์ „ํ•ด๋ณด์„ธ์š”.
04:38
And this guy's on display downstairs,
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์ด ๋…€์„์€ ์•„๋žซ์ธต์— ์ „์‹œ๋˜์–ด์žˆ์œผ๋‹ˆ
04:40
so take a look if you get a chance.
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์‹œ๊ฐ„์ด ๋œ๋‹ค๋ฉด ๊ตฌ๊ฒฝํ•ด๋ณด์„ธ์š”.
04:43
The most powerful tools in origami
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์ข…์ด์ ‘๊ธฐ์˜ ๊ฐ€์žฅ ๊ฐ•๋ ฅํ•œ ๋„๊ตฌ๋Š”
04:45
have related to how we get parts of creatures.
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์ƒ๋ฌผ์˜ ์ผ๋ถ€๋ฅผ ์–ด๋–ป๊ฒŒ ๊ตฌํ•˜๋Š๋ƒ์™€ ์—ฐ๊ด€๋˜๋Š”๋ฐ
04:48
And I can put it in this simple equation.
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์ด๋ฅผ ๊ฐ„๋‹จํ•œ ๊ณต์‹์œผ๋กœ ํ‘œํ˜„ํ•ด๋ดค์Šต๋‹ˆ๋‹ค.
04:50
We take an idea,
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์šฐ๋ฆฌ์˜ ์•„์ด๋””์–ด๋ฅผ
04:52
combine it with a square, and you get an origami figure.
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์ข…์ด์™€ ํ•ฉ์น˜๋ฉด ์ข…์ด์ ‘๊ธฐ ์ž‘ํ’ˆ์ด ํƒ„์ƒํ•˜์ฃ .
04:55
(Laughter)
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(์›ƒ์Œ)
04:59
What matters is what we mean by those symbols.
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์ค‘์š”ํ•œ ๊ฒƒ์€ ์ด ๊ธฐํ˜ธ๊ฐ€ ์˜๋ฏธํ•˜๋Š” ๋ฐ”์ž…๋‹ˆ๋‹ค.
05:01
And you might say, "Can you really be that specific?
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์–ด๋–ค ๋ถ„๋“ค์€ ๋ฌป๊ฒ ์ฃ , "๊ทธ๋ ‡๊ฒŒ ์ž์„ธํ•˜๊ฒŒ ํ‘œํ˜„์ด ๊ฐ€๋Šฅํ•œ๊ฐ€์š”?"
05:04
I mean, a stag beetle -- it's got two points for jaws,
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๊ทธ๋Ÿฌ๋‹ˆ๊นŒ, ์‚ฌ์Šด ๋ฒŒ๋ ˆ์—๊ฒŒ ๋‘ ๊ฐœ์˜ ํ„ฑ๊ณผ
05:06
it's got antennae. Can you be that specific in the detail?"
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๋”๋“ฌ์ด๊ฐ€ ์žˆ๋‹ค๋ฉด, ๊ทธ๋ ‡๊ฒŒ ์„ธ์„ธํ•˜๊ฒŒ ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ๋‚˜์š”?"
05:10
And yeah, you really can.
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๋ฌผ๋ก  ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
05:13
So how do we do that? Well, we break it down
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์–ด๋–ป๊ฒŒ ํ•˜๋ฉด ๋ ๊นŒ์š”? ์šฐ๋ฆฌ๋Š” ์ผ๋‹จ ์ด๊ฒƒ์„
05:16
into a few smaller steps.
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์—ฌ๋Ÿฌ ๋‹จ๊ณ„๋กœ ๋‚˜๋ˆ•๋‹ˆ๋‹ค.
05:18
So let me stretch out that equation.
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์•ž์˜ ๊ณต์‹์„ ์กฐ๊ธˆ ์ „๊ฐœํ•ด๋ณด๊ฒ ์Šต๋‹ˆ๋‹ค.
05:20
I start with my idea. I abstract it.
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์ œ ์•„์ด๋””์–ด๋ฅผ ์ถ”์ƒํ™”ํ•˜๋Š” ๊ฒƒ๋ถ€ํ„ฐ ์‹œ์ž‘ํ•˜์ฃ .
05:23
What's the most abstract form? It's a stick figure.
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๊ฐ€์žฅ ์ถ”์ƒ์ ์ธ ํ˜•ํƒœ๊ฐ€ ๋ญ˜๊นŒ์š”? ๋ฐ”๋กœ ์„ ์ž…๋‹ˆ๋‹ค.
05:26
And from that stick figure, I somehow have to get to a folded shape
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๊ทธ ์„ ํ˜•์—์„œ๋ถ€ํ„ฐ ๋Œ€์ƒ์˜ ๋ชจ๋“  ๋ถ€๋ถ„์„ ํ‘œํ˜„ํ•˜๋Š”
05:29
that has a part for every bit of the subject,
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์ ‘ํžŒ ํ˜•ํƒœ๋“ค์„ ์–ด๋–ป๊ฒŒ๋“  ๋งŒ๋“ค์–ด๋‚ด์•ผ ํ•˜์ฃ .
05:32
a flap for every leg.
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๋‹ค๋ฆฌ๋ฅผ ํ‘œํ˜„ํ•  ํ”Œ๋žฉ๊นŒ์ง€์š”.
05:34
And then once I have that folded shape that we call the base,
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๊ทธ๋ฆฌ๊ณ  ๋ฒ ์ด์Šค๋ผ ๋ถˆ๋ฆฌ๋Š” ๊ธฐ๋ณธ ํ˜•ํƒœ๋ฅผ ๊ฐ–์ถ”๊ฒŒ ๋˜๋ฉด
05:37
you can make the legs narrower, you can bend them,
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๋‹ค๋ฆฌ๋ฅผ ๊ฐ€๋Š˜๊ฒŒ ํ•˜๊ฑฐ๋‚˜ ๊ตฝํ˜€์„œ
05:40
you can turn it into the finished shape.
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์™„์„ฑ๋œ ํ˜•ํƒœ๋ฅผ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
05:42
Now the first step, pretty easy.
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์ด๊ฒŒ ์ฒซ ๋‹จ๊ณ„์ž…๋‹ˆ๋‹ค. ์•„์ฃผ ์‰ฝ์ฃ .
05:44
Take an idea, draw a stick figure.
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์•„์ด๋””์–ด๋ฅผ ๋– ์˜ฌ๋ฆฌ๊ณ , ์„ ์„ ๊ทธ๋ฆฐ๋‹ค.
05:46
The last step is not so hard, but that middle step --
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๋งˆ์ง€๋ง‰ ๋‹จ๊ณ„๋„ ๊ทธ๋ ‡๊ฒŒ ์–ด๋ ต์ง€๋Š” ์•Š์ง€๋งŒ
05:49
going from the abstract description to the folded shape --
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์ถ”์ƒ์ ์ธ ์„  ๋ชจํ˜•์„ ์ ‘ํžŒ ํ˜•ํƒœ๋กœ ๋งŒ๋“œ๋Š” ์ค‘๊ฐ„ ๊ณผ์ •,
05:52
that's hard.
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๊ทธ ๊ณผ์ •์ด ํž˜๋“ญ๋‹ˆ๋‹ค.
05:54
But that's the place where the mathematical ideas
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๋ฐ”๋กœ ๊ทธ ๋‚œ๊ฐํ•œ ๊ณผ์ •์—์„œ
05:56
can get us over the hump.
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์ˆ˜ํ•™ ์ด๋ก ์ด ๋น›์„ ๋ฐœํœ˜ํ•ฉ๋‹ˆ๋‹ค.
05:58
And I'm going to show you all how to do that
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์ œ๊ฐ€ ๊ทธ ๊ณผ์ •์„ ๋ณด์—ฌ๋“œ๋ฆฌ๋ฉด ์—ฌ๋Ÿฌ๋ถ„๋„
06:00
so you can go out of here and fold something.
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์ž‘ํ’ˆ์„ ๋งŒ๋“ค ์ˆ˜ ์žˆ์„ ๊ฒ๋‹ˆ๋‹ค.
06:02
But we're going to start small.
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์ž‘์€ ๊ฒƒ์—์„œ๋ถ€ํ„ฐ ์‹œ์ž‘ํ•˜์ฃ .
06:04
This base has a lot of flaps in it.
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์ด ๋ฒ ์ด์Šค๋Š” ํ”Œ๋žฉ์ด ๋งŽ์Šต๋‹ˆ๋‹ค.
06:06
We're going to learn how to make one flap.
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ํ”Œ๋žฉ ํ•˜๋‚˜๋ฅผ ๋งŒ๋“œ๋Š” ๋ฒ•์„ ๋ฐฐ์›Œ๋ด…์‹œ๋‹ค.
06:09
How would you make a single flap?
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ํ•˜๋‚˜์˜ ํ”Œ๋žฉ์„ ์–ด๋–ป๊ฒŒ ๋งŒ๋“œ๋ƒ๋ฉด
06:11
Take a square. Fold it in half, fold it in half, fold it again,
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์ •์‚ฌ๊ฐํ˜• ์ข…์ด๊ฐ€ ๊ธธ๊ณ  ๊ฐ€๋Š˜์–ด์งˆ ๋•Œ๊นŒ์ง€
06:14
until it gets long and narrow,
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๋ฐ˜์œผ๋กœ ์ ‘๊ณ  ์ ‘๊ณ  ๋˜ ์ ‘๋Š” ๊ฒ๋‹ˆ๋‹ค.
06:16
and then we'll say at the end of that, that's a flap.
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์ด๋ ‡๊ฒŒ ๋‹ค ์ ‘์œผ์‹œ๋ฉด ํ”Œ๋žฉ์ด ์™„์„ฑ๋˜์—ˆ์ฃ .
06:18
I could use that for a leg, an arm, anything like that.
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์ด ํ”Œ๋žฉ์„ ๋‹ค๋ฆฌ, ํŒ” ๋“ฑ์œผ๋กœ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
06:21
What paper went into that flap?
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ํ”Œ๋žฉ์€ ์ข…์ด์˜ ์–ด๋Š ๋ถ€๋ถ„์„ ์‚ฌ์šฉํ• ๊นŒ์š”?
06:23
Well, if I unfold it and go back to the crease pattern,
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์ž, ์ ‘์€ ๊ฒƒ์„ ํŽผ์ณ์„œ ์ ‘๊ธฐ ํŒจํ„ด์„ ๋ณด๋ฉด
06:25
you can see that the upper left corner of that shape
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์™ผ์ชฝ ์œ„ ๋ชจ์„œ๋ฆฌ ๋ถ€๋ถ„์ด ํ”Œ๋žฉ์œผ๋กœ ์‚ฌ์šฉ๋œ ๊ฑธ ์•Œ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
06:28
is the paper that went into the flap.
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์™ผ์ชฝ ์œ„ ๋ชจ์„œ๋ฆฌ ๋ถ€๋ถ„์ด ํ”Œ๋žฉ์œผ๋กœ ์‚ฌ์šฉ๋œ ๊ฑธ ์•Œ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
06:30
So that's the flap, and all the rest of the paper's left over.
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๊ทธ ๋„ํ˜•์ด ํ”Œ๋žฉ์ด๊ณ  ๊ทธ ๋‚˜๋จธ์ง€๋Š” ์—ฌ๋ถ„ ์ข…์ด์ž…๋‹ˆ๋‹ค.
06:33
I can use it for something else.
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๊ทธ ์—ฌ๋ถ„์„ ๋‹ค๋ฅธ ๊ณณ์— ์“ธ ์ˆ˜ ์žˆ์ฃ .
06:35
Well, there are other ways of making a flap.
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๋‹ค๋ฅธ ๋ฐฉ๋ฒ•์œผ๋กœ๋„ ํ”Œ๋žฉ์„ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
06:37
There are other dimensions for flaps.
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๊ทœ๋ชจ๋„ ๋‹ฌ๋ฆฌํ•  ์ˆ˜ ์žˆ๊ณ ์š”.
06:39
If I make the flaps skinnier, I can use a bit less paper.
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ํ”Œ๋žฉ์„ ๊ฐ€๋Š˜๊ฒŒ ๋งŒ๋“ค์ˆ˜๋ก ํ•„์š”ํ•œ ๋ถ€๋ถ„๋„ ์ ์ฃ .
06:42
If I make the flap as skinny as possible,
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ํ”Œ๋žฉ์„ ์ตœ๋Œ€ํ•œ ๊ฐ€๋Š˜๊ฒŒ ๋งŒ๋“ค๊ฒŒ ๋˜๋ฉด
06:45
I get to the limit of the minimum amount of paper needed.
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ํ•„์š”ํ•œ ์ข…์ด ๋„“์ด์˜ ์ตœ์†Œ ํ•œ๊ณ„์— ์ด๋ฆ…๋‹ˆ๋‹ค.
06:48
And you can see there, it needs a quarter-circle of paper to make a flap.
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๋ณด์‹œ๋‹ค์‹œํ”ผ ํ”Œ๋žฉ์— ์›์˜ ยผ์ด ๋“ค์–ด๊ฐ€์ฃ .
06:52
There's other ways of making flaps.
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์ด์™ธ์—๋„ ํ”Œ๋žฉ ๋งŒ๋“œ๋Š” ๋ฒ•์€ ์—ฌ๋Ÿฌ๊ฐ€์ง€์ž…๋‹ˆ๋‹ค.
06:54
If I put the flap on the edge, it uses a half circle of paper.
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์ข…์ด์˜ ๊ฐ€์žฅ์ž๋ฆฌ์— ํ”Œ๋žฉ์„ ๋งŒ๋“ค๋ฉด ๋ฐ˜์›์ด ํ•„์š”ํ•˜๊ณ 
06:57
And if I make the flap from the middle, it uses a full circle.
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์ข…์ด ๋‚ด๋ถ€์— ๋งŒ๋“ค๋ฉด ์˜จ์ „ํ•œ ์›์ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
07:00
So, no matter how I make a flap,
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๊ทธ๋ž˜์„œ ํ”Œ๋žฉ์„ ๋งŒ๋“ค๊ฒŒ ๋˜๋ฉด
07:02
it needs some part
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์–ด๋– ํ•œ ๋ฐฉ์‹์„ ์‚ฌ์šฉํ•ด๋„
07:04
of a circular region of paper.
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์›์˜ ์ผ๋ถ€๊ฐ€ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
07:06
So now we're ready to scale up.
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์ด์ œ ํ•œ ๋‹จ๊ณ„ ์˜ฌ๋ผ์„œ์„œ
07:08
What if I want to make something that has a lot of flaps?
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ํ”Œ๋žฉ์ด ๋งŽ์€ ํ˜•ํƒœ๋ฅผ ๋งŒ๋“ค๋ ค๋ฉด ์–ด๋–ป๊ฒŒ ํ•ด์•ผํ• ๊นŒ์š”?
07:11
What do I need? I need a lot of circles.
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๊ทธ๋ ‡์Šต๋‹ˆ๋‹ค. ์›์ด ๋งŽ์ด ํ•„์š”ํ•˜๊ฒ ์ฃ .
07:15
And in the 1990s,
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์ข…์ด์ ‘๊ธฐ ์žฅ์ธ๋“ค์€
07:17
origami artists discovered these principles
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์ด ๋ฒ•์น™์„ 1990๋…„๋Œ€์— ๋ฐœ๊ฒฌํ•˜๊ณ ์„œ
07:19
and realized we could make arbitrarily complicated figures
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์ข…์ด ํ•œ ์žฅ์— ์›์„ ๋งŽ์ด ์ฑ„์›Œ๋„ฃ๋Š” ๊ฒƒ๋งŒ์œผ๋กœ
07:22
just by packing circles.
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์ž„์˜์ ์œผ๋กœ ๋ณต์žกํ•œ ํ˜•ํƒœ๋ฅผ ๋งŒ๋“ค ์ˆ˜ ์žˆ๋‹จ ๊ฑธ ๊นจ๋‹ฌ์•˜์ฃ .
07:25
And here's where the dead people start to help us out,
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์—ฌ๊ธฐ์„œ ์กฐ์ƒ๋‹˜๋“ค์ด ์šฐ๋ฆฌ๋ฅผ ๋„์™€์ฃผ๊ธฐ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
07:28
because lots of people have studied
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์™œ๋ƒํ•˜๋ฉด ์ข…์ด์— ์›์„ ์ฑ„์›Œ๋„ฃ๋Š” ๋ฌธ์ œ๋Š”
07:31
the problem of packing circles.
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๋งŽ์€ ์‚ฌ๋žŒ๋“ค์ด ์—ฐ๊ตฌํ–ˆ์œผ๋‹ˆ๊นŒ์š”.
07:33
I can rely on that vast history of mathematicians and artists
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์—ญ์‚ฌ ์† ์ˆ˜๋งŽ์€ ์ˆ˜ํ•™์ž๋“ค๊ณผ ์˜ˆ์ˆ ๊ฐ€๋“ค์ด ๊ณต๋ถ€ํ–ˆ๋˜
07:36
looking at disc packings and arrangements.
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์›์˜ ๋ฐฐ์—ด์— ๊ด€ํ•œ ์ง€์‹์„ ์“ธ ์ˆ˜ ์žˆ์ฃ .
07:39
And I can use those patterns now to create origami shapes.
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๊ทธ๋ฆฌ๊ณ  ๊ทธ ํŒจํ„ด์œผ๋กœ ์ข…์ด์ ‘๊ธฐ ํ˜•ํƒœ๋ฅผ ๋งŒ๋“œ๋Š” ๊ฒ๋‹ˆ๋‹ค.
07:43
So we figured out these rules whereby you pack circles,
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์ด๋Ÿฌํ•œ ์› ๋ฐฐ์—ด ๋ฒ•์น™์„ ๋”ฐ๋ฅด๊ณ 
07:45
you decorate the patterns of circles with lines
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๋˜ ๋‹ค๋ฅธ ๋ฒ•์น™์„ ์จ์„œ ์›์— ์„ ์„ ๊ทธ๋ ค๋„ฃ์œผ๋ฉด
07:48
according to more rules. That gives you the folds.
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์ ‘๊ธฐํŒจํ„ด์ด ๋‚˜์˜ต๋‹ˆ๋‹ค.
07:50
Those folds fold into a base. You shape the base.
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์„ ์„ ๋”ฐ๋ผ ์ ‘์œผ๋ฉด ๋ฒ ์ด์Šค๊ฐ€ ๋‚˜์˜ค๊ณ ,
07:53
You get a folded shape -- in this case, a cockroach.
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๋ฒ ์ด์Šค๋ฅผ ๋‹ค๋“ฌ์–ด ํ˜•ํƒœ๋ฅผ ๋งŒ๋“ค์ฃ . ์ด๊ฑด ๋ฐ”ํ€ด๋ฒŒ๋ ˆ์ž…๋‹ˆ๋‹ค.
07:57
And it's so simple.
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์ฐธ ์‰ฝ์ฃ ?
07:59
(Laughter)
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(์›ƒ์Œ)
08:02
It's so simple that a computer could do it.
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๋„ˆ๋ฌด ์‰ฌ์›Œ์„œ ์ปดํ“จํ„ฐ๋กœ๋„ ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
08:05
And you say, "Well, you know, how simple is that?"
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"๊ทธ๊ฒŒ ๊ณผ์—ฐ ์‰ฌ์šด๊ฐ€์š”?" ๋ผ๊ณ  ํ•˜์…”๋„
08:07
But computers -- you need to be able to describe things
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์ปดํ“จํ„ฐ๋Š” ๊ทผ๋ณธ์ ์ธ ์›๋ฆฌ๋งŒ ๋ฐ›์•„๋“ค์ด๋‹ˆ
08:09
in very basic terms, and with this, we could.
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์ข…์ด์ ‘๊ธฐ๋Š” ๊ฐ„๋‹จํ•œ ์›๋ฆฌ๋กœ ํ‘œํ˜„์ด ๋œ๋‹ค๋Š” ๊ฑฐ์ฃ .
08:12
So I wrote a computer program a bunch of years ago
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๊ทธ๋ž˜์„œ ๋ช‡ ๋…„ ์ „์— ์ œ๊ฐ€ ํŠธ๋ฆฌ๋ฉ”์ด์ปค๋ผ๋Š”
08:14
called TreeMaker, and you can download it from my website.
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ํ”„๋กœ๊ทธ๋žจ์„ ๋งŒ๋“ค์—ˆ์Šต๋‹ˆ๋‹ค. ์ œ ์‚ฌ์ดํŠธ์—์„œ ๊ณต์งœ๋กœ
08:16
It's free. It runs on all the major platforms -- even Windows.
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๋ฐ›์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์›ฌ๋งŒํ•œ ์šด์˜์ฒด์ œ์—์„œ ์‹คํ–‰ ๊ฐ€๋Šฅํ•˜์ฃ .
08:19
(Laughter)
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์œˆ๋„์šฐ์—์„œ๋„์š”. (์›ƒ์Œ)
08:21
And you just draw a stick figure,
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์—ฌ๋Ÿฌ๋ถ„์ด ์„  ๋ชจํ˜•๋งŒ ๊ทธ๋ฆฌ๋ฉด
08:23
and it calculates the crease pattern.
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ํ”„๋กœ๊ทธ๋žจ์ด ์ ‘๊ธฐํŒจํ„ด์„ ๊ณ„์‚ฐํ•ด์ค๋‹ˆ๋‹ค.
08:25
It does the circle packing, calculates the crease pattern,
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์› ๋ฐฐ์—ด์„ ์ด์šฉํ•ด์„œ ํŒจํ„ด์„ ๋งŒ๋“ค์ฃ .
08:28
and if you use that stick figure that I just showed --
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์ œ๊ฐ€ ๋ฐฉ๊ธˆ ๋ณด์—ฌ๋“œ๋ฆฐ ์„  ๋ชจํ˜•์„ ์˜ˆ๋กœ,
08:30
which you can kind of tell, it's a deer, it's got antlers --
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๋ฟ” ๋‹ฌ๋ฆฐ ์‚ฌ์Šด์ด๋ž€ ๊ฑธ ์•„๋งˆ ๋ˆˆ์น˜์ฑ„์…จ๊ฒ ์ง€๋งŒ,
08:33
you'll get this crease pattern.
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์ด๋Ÿฐ ์ ‘๊ธฐ ํŒจํ„ด์ด ๋‚˜์˜ต๋‹ˆ๋‹ค.
08:35
And if you take this crease pattern, you fold on the dotted lines,
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์„ ์„ ๋”ฐ๋ผ์„œ ์ด ํŒจํ„ด์„ ์ ‘์œผ์‹œ๋ฉด
08:37
you'll get a base that you can then shape
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๋ฒ ์ด์Šค ๋ชจ์–‘์ด ๋‚˜์˜ค๋Š”๋ฐ์š”, ์ด ๊ฒƒ์„
08:40
into a deer,
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์ž์„ธํ•œ ์ ‘๊ธฐ ํŒจํ„ด์„ ์‚ฌ์šฉํ•˜์—ฌ
08:42
with exactly the crease pattern that you wanted.
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์›ํ•˜์‹œ๋Š” ์‚ฌ์Šด ๋ชจ์–‘์„ ๋งŒ๋“œ์‹œ๋ฉด ๋ฉ๋‹ˆ๋‹ค.
08:44
And if you want a different deer,
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๊ทธ๋ฆฌ๊ณ  ํฐ ๊ผฌ๋ฆฌ ์‚ฌ์Šด์ด ์•„๋‹Œ
08:46
not a white-tailed deer, but you want a mule deer, or an elk,
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๋‹ค๋ฅธ ์‚ฌ์Šด์„ ์›ํ•œ๋‹ค๋ฉด
08:49
you change the packing,
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์› ๋ฐฐ์—ด์„ ๋ฐ”๊พธ๋ฉด ๋ฉ๋‹ˆ๋‹ค.
08:51
and you can do an elk.
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์—˜ํฌ๋„ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
08:53
Or you could do a moose.
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์•„๋‹ˆ๋ฉด ๋ฌด์Šค๋„ ๋˜์ฃ .
08:55
Or, really, any other kind of deer.
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์‚ฌ์‹ค ์–ด๋–ค ์‚ฌ์Šด ์ข…๋ฅ˜๋„ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
08:57
These techniques revolutionized this art.
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์ด๋Ÿฐ ๊ธฐ์ˆ ์€ ์ข…์ด์ ‘๊ธฐ ๋ถ„์•ผ๋ฅผ ํฌ๊ฒŒ ๋ฐ”๊ฟจ์ฃ .
09:00
We found we could do insects,
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๊ณค์ถฉ๋„ ์ ‘์„ ์ˆ˜ ์žˆ๊ฒŒ ๋˜์—ˆ๊ณ 
09:02
spiders, which are close,
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๊ฑฐ๋ฏธ๋„ ๋งŒ๋“ค ์ˆ˜ ์žˆ๊ณ 
09:04
things with legs, things with legs and wings,
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๋‹ค๋ฆฌ, ๋‚ ๊ฐœ ๊ทธ๋ฆฌ๊ณ  ๋”๋“ฌ์ด๊ฐ€ ๋‹ฌ๋ฆฐ ๊ฒƒ๊นŒ์ง€
09:08
things with legs and antennae.
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ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
09:10
And if folding a single praying mantis from a single uncut square
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์ข…์ด ํ•œ ์žฅ์œผ๋กœ ์‚ฌ๋งˆ๊ท€ ํ•œ ๋งˆ๋ฆฌ๋ฅผ ์ ‘๋Š” ๊ฒƒ์ด
09:13
wasn't interesting enough,
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๋ณ„๋กœ ์žฌ๋ฏธ์—†๋‹ค๊ณ  ์—ฌ๊ธฐ์‹œ๋ฉด
09:15
then you could do two praying mantises
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์ข…์ด ํ•œ ์žฅ์œผ๋กœ ์‚ฌ๋งˆ๊ท€ ๋‘ ๋งˆ๋ฆฌ๋ฅผ
09:17
from a single uncut square.
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๋งŒ๋“ค ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค.
09:19
She's eating him.
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์•”์ปท์ด ์ˆ˜์ปท์„ ๋จน๊ณ  ์žˆ๋„ค์š”.
09:21
I call it "Snack Time."
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์ œ๋ชฉ์„ "๊ฐ„์‹์‹œ๊ฐ„"์ด๋ผ๊ณ  ์ง€์–ด์ฃผ์ฃ .
09:24
And you can do more than just insects.
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๊ณค์ถฉ ์™ธ์—๋„ ๊ฐ€๋Šฅ์„ฑ์€ ๋ฌดํ•œํ•ฉ๋‹ˆ๋‹ค.
09:26
This -- you can put details,
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์„ธ์„ธํ•œ ์‚ฌํ•ญ๊นŒ์ง€ ๋“ค์–ด๊ฐ€
09:28
toes and claws. A grizzly bear has claws.
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๊ณฐ์˜ ๋ฐœ๊ฐ€๋ฝ๊ณผ ๋ฐœํ†ฑ๊นŒ์ง€๋„ ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ์ฃ .
09:31
This tree frog has toes.
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์ฒญ๊ฐœ๊ตฌ๋ฆฌ์˜ ๋ฐœ๊ฐ€๋ฝ๋„์š”.
09:33
Actually, lots of people in origami now put toes into their models.
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์ด์ œ ๋งŽ์€ ์‚ฌ๋žŒ๋“ค์ด ์ข…์ด์ ‘๊ธฐํ•˜๋ฉด์„œ ๋ฐœ๊ฐ€๋ฝ๋„ ํ‘œํ˜„ํ•ฉ๋‹ˆ๋‹ค.
09:36
Toes have become an origami meme,
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๋ฐœ๊ฐ€๋ฝ์€ ์ข…์ด์ ‘๊ธฐ์˜ ๋ฐˆ์ด ๋œ๊ฑฐ์ฃ . (๋ฐˆ=๋น„์œ ์ „์  ๋ฌธํ™”์š”์†Œ)
09:38
because everyone's doing it.
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๋ชจ๋‘๊ฐ€ ๊ทธ๋ ‡๊ฒŒ ํ•˜๋‹ˆ๊นŒ์š”.
09:41
You can make multiple subjects.
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๋ณต์ˆ˜ ๊ฐœ์ฒด๋„ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
09:43
So these are a couple of instrumentalists.
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์ด๊ฒƒ์€ ๋‘ ๋ช…์˜ ์•…๊ธฐ ์—ฐ์ฃผ์ž์ž…๋‹ˆ๋‹ค.
09:45
The guitar player from a single square,
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์ข…์ด ํ•œ ์žฅ์œผ๋กœ๋Š” ๊ธฐํƒ€ ์—ฐ์ฃผ์ž๋ฅผ
09:48
the bass player from a single square.
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๋˜ ๋‹ค๋ฅธ ํ•œ ์žฅ์œผ๋กœ๋Š” ๋ฒ ์ด์Šค ์—ฐ์ฃผ์ž๋ฅผ ๋งŒ๋“ค์—ˆ์Šต๋‹ˆ๋‹ค.
09:50
And if you say, "Well, but the guitar, bass --
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ํ•˜์ง€๋งŒ ๊ธฐํƒ€๋‚˜ ๋ฒ ์ด์Šค๋งŒ์œผ๋กœ
09:52
that's not so hot.
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๋ฉ‹์ง€๋‹จ ์ƒ๊ฐ์ด ์•ˆ ๋“ ๋‹ค๋ฉด
09:54
Do a little more complicated instrument."
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๋” ๋ณต์žกํ•œ ์•…๊ธฐ๋ฅผ ๋งŒ๋“ค์–ด๋ณผ๊นŒ์š”?
09:56
Well, then you could do an organ.
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์Œ, ๊ทธ๋Ÿฌ๋ฉด ์˜ค๋ฅด๊ฐ„์„ ๋งŒ๋“ค์ฃ  ๋ญ.
09:58
(Laughter)
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(์›ƒ์Œ)
10:01
And what this has allowed is the creation
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์ด๋ ‡๊ฒŒ ํ•ด์„œ ํƒ„์ƒํ•œ ๊ฒƒ์ด
10:03
of origami-on-demand.
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์ฃผ๋ฌธํ˜• ์ข…์ด์ ‘๊ธฐ ์ž…๋‹ˆ๋‹ค.
10:05
So now people can say, "I want exactly this and this and this,"
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์‚ฌ๋žŒ๋“ค์ด ์ด๋Ÿฌ์ด๋Ÿฌํ•œ ๊ฒƒ์ด ํ•„์š”ํ•˜๋‹ค๊ณ  ๋งํ•˜๋ฉด
10:08
and you can go out and fold it.
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์ข…์ด์ ‘๊ธฐ๋กœ ๋งŒ๋“ค์–ด์ฃผ๋Š”๊ฑฐ์ฃ .
10:11
And sometimes you create high art,
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์ˆœ์ˆ˜์˜ˆ์ˆ  ์ž‘ํ’ˆ์„ ๋งŒ๋“ค๊ธฐ๋„ ํ•˜๊ณ 
10:13
and sometimes you pay the bills by doing some commercial work.
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๊ฐ€๋”์€ ์ƒ์—…์˜ˆ์ˆ ๋กœ ๋ˆ๋„ ๋ฒ•๋‹ˆ๋‹ค.
10:16
But I want to show you some examples.
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๋ช‡ ๊ฐ€์ง€ ์˜ˆ๋ฅผ ๋ณด์—ฌ๋“œ๋ฆด๊ฒŒ์š”.
10:18
Everything you'll see here,
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๋‹ค์Œ ๋™์˜์ƒ์—์„œ ์ฐจ๋ฅผ ์ œ์™ธํ•œ
10:20
except the car, is origami.
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๋ชจ๋“  ๊ฒƒ๋“ค์€ ์ข…์ด์ ‘๊ธฐ ์ž‘ํ’ˆ๋“ค์ž…๋‹ˆ๋‹ค.
10:23
(Video)
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(๋™์˜์ƒ)
10:51
(Applause)
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(๋ฐ•์ˆ˜)
10:54
Just to show you, this really was folded paper.
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๋ณด์‹œ๋‹ค์‹œํ”ผ ์ด๋“ค์€ ์‹ค์ œ ์ข…์ด ์ž‘ํ’ˆ๋“ค์ž…๋‹ˆ๋‹ค.
10:57
Computers made things move,
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์ปดํ“จํ„ฐ๋กœ ์›€์ง์ž„์„ ํ‘œํ˜„ํ–ˆ์ง€๋งŒ
10:59
but these were all real, folded objects that we made.
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์ด๋“ค์€ ๋ชจ๋‘ ์šฐ๋ฆฌ๊ฐ€ ๋งŒ๋“  ์ข…์ด์ ‘๊ธฐ ์ž‘ํ’ˆ๋“ค์ž…๋‹ˆ๋‹ค.
11:03
And we can use this not just for visuals,
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์šฐ๋ฆฌ๋Š” ์ข…์ด์ ‘๊ธฐ๋ฅผ ์˜ˆ์ˆ ์  ๊ฐ€์น˜๋งŒ์ด ์•„๋‹ˆ๋ผ,
11:06
but it turns out to be useful even in the real world.
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์‹ค์ œ ์„ธ๊ณ„์—์„œ ์œ ์šฉํ•˜๊ฒŒ ์“ฐ์ด๊ฒŒ๋„ ํ•ฉ๋‹ˆ๋‹ค.
11:09
Surprisingly, origami
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๋†€๋ž๊ฒŒ๋„ ์ข…์ด์ ‘๊ธฐ์™€
11:10
and the structures that we've developed in origami
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์šฐ๋ฆฌ๊ฐ€ ์ข…์ด์ ‘๊ธฐ์—์„œ ๊ฐœ๋ฐœํ•œ ๊ตฌ์กฐ๋“ค์€
11:13
turn out to have applications in medicine, in science,
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์˜ํ•™๊ณผ ๊ณผํ•™, ์šฐ์ฃผ์—์„œ, ์ธ์ฒด์—์„œ,
11:16
in space, in the body, consumer electronics and more.
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๊ทธ๋ฆฌ๊ณ  ๊ฐ€์ „์ œํ’ˆ ๋“ฑ์—๋„ ์‘์šฉ์ด ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
11:19
And I want to show you some of these examples.
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์ด์— ๋Œ€ํ•œ ์˜ˆ๋ฅผ ๋ช‡ ๊ฐ€์ง€ ๋ณด์—ฌ๋“œ๋ฆฌ๊ฒ ์Šต๋‹ˆ๋‹ค.
11:22
One of the earliest was this pattern,
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์ด๊ฒƒ์€ ์ดˆ๊ธฐ ํŒจํ„ด ์ค‘ ํ•˜๋‚˜์ž…๋‹ˆ๋‹ค.
11:24
this folded pattern,
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์ด ์ ‘๊ธฐ ํŒจํ„ด์€
11:26
studied by Koryo Miura, a Japanese engineer.
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์ผ๋ณธ์˜ ๊ธฐ์ˆ ์ž์ธ ์ฝ”๋ฃŒ ๋ฏธ์šฐ๋ผ๊ฐ€ ์—ฐ๊ตฌํ•œ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
11:29
He studied a folding pattern, and realized
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๊ทธ๋Š” ์ ‘๋Š” ํŒจํ„ด์„ ์—ฐ๊ตฌํ•˜๋‹ค๊ฐ€
11:31
this could fold down into an extremely compact package
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์•„์ฃผ ์‰ฝ๊ฒŒ ์—ฌ๋‹ซ์„ ์ˆ˜ ์žˆ๋Š” ๊ตฌ์กฐ๋ฅผ ๊ฐ€์ง„
11:34
that had a very simple opening and closing structure.
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๊ทนํžˆ ์ž‘์€ ๊พธ๋Ÿฌ๋ฏธ๋ฅผ ๋งŒ๋“ค ์ˆ˜ ์žˆ๋‹จ ๊ฑธ ๊นจ๋‹ซ๊ณ 
11:37
And he used it to design this solar array.
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์ง€๊ธˆ ๋ณด์‹œ๋Š” ํƒœ์–‘์—ด ์ง‘์—ด๊ธฐ ์„ค๊ณ„์— ์‚ฌ์šฉํ–ˆ์Šต๋‹ˆ๋‹ค.
11:40
It's an artist's rendition, but it flew in a Japanese telescope
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์ด๊ฑด ๋ชจํ˜•์ด์ง€๋งŒ, ์‹ค์ œ ์ œํ’ˆ์€ 1995๋…„์— ๋ฐœ์‚ฌ๋œ
11:43
in 1995.
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์ผ๋ณธ ๋ง์›๊ฒฝ์— ํฌํ•จ๋˜์–ด ์žˆ์—ˆ์Šต๋‹ˆ๋‹ค.
11:45
Now, there is actually a little origami
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์‚ฌ์‹ค ์ œ์ž„์Šค ์›น ์šฐ์ฃผ ๋ง์›๊ฒฝ์—๋„
11:47
in the James Webb Space Telescope, but it's very simple.
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์ข…์ด์ ‘๊ธฐ๊ฐ€ ์กฐ๊ธˆ ๊ด€๋ จ๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค. ๋งค์šฐ ๊ฐ„๋‹จํ•˜์ง€๋งŒ์š”.
11:50
The telescope, going up in space,
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์šฐ์ฃผ๋กœ ๋ฐœ์‚ฌ๋œ ๋ง์›๊ฒฝ์˜
11:52
it unfolds in two places.
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์–‘์ชฝ์—์„œ ๋‚ ๊ฐœ๊ฐ€ ํŽผ์ณ์ง‘๋‹ˆ๋‹ค.
11:55
It folds in thirds. It's a very simple pattern --
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์‚ผ๋“ฑ๋ถ„์œผ๋กœ ์ ‘ํ˜€์žˆ์—ˆ๋˜๊ฑฐ์ฃ .
11:57
you wouldn't even call that origami.
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๋„ˆ๋ฌด ๊ฐ„๋‹จํ•ด์„œ ์ข…์ด์ ‘๊ธฐ๋ž„ ๊ฒƒ๋„ ์—†์Šต๋‹ˆ๋‹ค.
11:59
They certainly didn't need to talk to origami artists.
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์ข…์ด์ ‘๊ธฐ ์˜ˆ์ˆ ๊ฐ€๋“ค๊ณผ ์ƒ๋‹ดํ•  ํ•„์š”๋„ ์—†์—ˆ์Šต๋‹ˆ๋‹ค.
12:02
But if you want to go higher and go larger than this,
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ํ•˜์ง€๋งŒ ์ด๋ณด๋‹ค ๋” ๋ฉ€๋ฆฌ ๋‚˜์•„๊ฐ€๋Š” ํฐ ๋ง์›๊ฒฝ์ด ํ•„์š”ํ•˜๋ฉด
12:05
then you might need some origami.
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์ข…์ด์ ‘๊ธฐ ๊ธฐ์ˆ ์ด ํ•„์š”ํ• ๊ฒ๋‹ˆ๋‹ค.
12:07
Engineers at Lawrence Livermore National Lab
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๋กœ๋ Œ์Šค ๋ฆฌ๋ฒ„๋ชจ์–ด ๊ตญ๋ฆฝ์—ฐ๊ตฌ์†Œ์˜ ๊ธฐ์ˆ ์ž๋“ค์€
12:09
had an idea for a telescope much larger.
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ํ›จ์”ฌ ๋” ํฐ ๋ง์›๊ฒฝ์„ ๋งŒ๋“ค๊ณ ์ž ํ–ˆ์Šต๋‹ˆ๋‹ค.
12:12
They called it the Eyeglass.
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๊ทธ๋“ค์€ ๊ทธ๊ฒƒ์„ "Eyeglass"๋ผ ๋ถˆ๋ €์ฃ .
12:14
The design called for geosynchronous orbit
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์ด๊ฒƒ์˜ ์„ค๊ณ„์—๋Š” 42,000 ํ‚ฌ๋กœ๋ฏธํ„ฐ ์ƒ๊ณต์˜
12:16
25,000 miles up,
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์ง€๊ตฌ ๋™๊ธฐ ๊ถค๋„์™€
12:18
100-meter diameter lens.
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์ง€๋ฆ„ 100๋ฏธํ„ฐ์˜ ๋ Œ์ฆˆ๊ฐ€ ํ•„์š”ํ–ˆ์Šต๋‹ˆ๋‹ค.
12:21
So, imagine a lens the size of a football field.
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์ถ•๊ตฌ์žฅ ํฌ๊ธฐ๋งŒํ•œ ๋ Œ์ฆˆ๋ฅผ ๋– ์˜ฌ๋ฆฌ์‹œ๋ฉด ๋ฉ๋‹ˆ๋‹ค.
12:24
There were two groups of people who were interested in this:
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์ด์— ํฅ๋ฏธ๋ฅผ ๋ณด์ธ ์‚ฌ๋žŒ๋“ค์€ ๋‘ ๋ถ€๋ฅ˜์˜€์Šต๋‹ˆ๋‹ค.
12:26
planetary scientists, who want to look up,
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์šฐ์ฃผ๋ฅผ ์˜ฌ๋ ค๋‹ค๋ณด๊ณ  ์‹ถ์€ ํ–‰์„ฑํ•™์ž๋“ค์™€
12:29
and then other people, who wanted to look down.
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์ง€๊ตฌ๋ฅผ ๋‚ด๋ ค๋‹ค๋ณด๊ณ  ์‹ถ์€ ์‚ฌ๋žŒ๋“ค์ด์—ˆ์ฃ .
12:33
Whether you look up or look down,
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์œ„๋ฅผ ๋ณด๋“  ์•„๋ž˜๋ฅผ ๋ณด๋“ 
12:35
how do you get it up in space? You've got to get it up there in a rocket.
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๋ง์›๊ฒฝ์„ ์šฐ์ฃผ๋กœ ๋ณด๋‚ด๋ ค๋ฉด ๋กœ์ผ“์— ์‹ค์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
12:38
And rockets are small. So you have to make it smaller.
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๊ทธ๋ฆฌ๊ณ  ๋กœ์ผ“์€ ์ž‘์œผ๋ฏ€๋กœ, ๋ง์›๊ฒฝ๋„ ์ž‘๊ฒŒ ๋งŒ๋“ค์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
12:41
How do you make a large sheet of glass smaller?
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์ด ๊ฑฐ๋Œ€ํ•œ ์œ ๋ฆฌํŒ์„ ์–ด๋–ป๊ฒŒ ์ถ•์†Œ์‹œํ‚ฌ๊นŒ์š”?
12:43
Well, about the only way is to fold it up somehow.
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์–ด๋–ป๊ฒŒ๋“  ์ ‘์–ด๋‚ด์•ผ ํ•˜๋Š”๊ฒŒ ์ •๋‹ต์ด๊ฒ ์ฃ .
12:46
So you have to do something like this.
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๋ฐ”๋กœ ์ด๋ ‡๊ฒŒ ๋ง์ž…๋‹ˆ๋‹ค.
12:48
This was a small model.
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์ด๊ฒƒ์€ ์ถ•์†ŒํŒ ๋ชจํ˜•์ž…๋‹ˆ๋‹ค.
12:51
Folded lens, you divide up the panels, you add flexures.
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๋ Œ์ฆˆ๋ฅผ ์—ฌ๋Ÿฌ ๊ฐœ๋กœ ๋‚˜๋ˆ  ๊ตด๊ณก์„ ๋”ํ•ฉ๋‹ˆ๋‹ค.
12:53
But this pattern's not going to work
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ํ•˜์ง€๋งŒ ์ด ๋ฐฉ์‹๋งŒ์œผ๋กœ 100๋ฏธํ„ฐ ํฌ๊ธฐ์˜ ๋ฌผ๊ฑด์„
12:56
to get something 100 meters down to a few meters.
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์ˆ˜ ๋ฏธํ„ฐ ์ด๋‚ด๋กœ ์ค„์ผ ์ˆ˜๋Š” ์—†์Šต๋‹ˆ๋‹ค.
12:59
So the Livermore engineers,
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๊ทธ๋ž˜์„œ ๋ฆฌ๋ฒ„๋ชจ์–ด์˜ ๊ธฐ์ˆ ์ž๋“ค์€
13:01
wanting to make use of the work of dead people,
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์„ ์กฐ ํ˜น์€ ํ˜„๋Œ€์˜ ์ข…์ด์ ‘๊ธฐ ์žฅ์ธ๋“ค์˜
13:03
or perhaps live origamists, said,
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์ž‘ํ’ˆ์„ ์ด์šฉํ•˜๊ณ ์ž ํ–ˆ์Šต๋‹ˆ๋‹ค.
13:06
"Let's see if someone else is doing this sort of thing."
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"์ด๋Ÿฐ ์ผ์„ ํ•  ์ˆ˜ ์žˆ๋Š” ์‚ฌ๋žŒ์„ ์ฐพ์•„์•ผ๊ฒ ์–ด"
13:09
So they looked into the origami community,
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๊ทธ๋“ค์€ ์ข…์ด์ ‘๊ธฐ ์ปค๋ฎค๋‹ˆํ‹ฐ๋ฅผ ์‚ดํˆ๊ณ , ๊ทธ๋Ÿฌ๋‹ค
13:12
we got in touch with them, and I started working with them.
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์šฐ๋ฆฌ์™€ ์—ฐ๋ฝ์ด ๋˜์–ด ์ œ๊ฐ€ ๊ทธ๋“ค๊ณผ ํ˜‘์—…ํ•˜๊ฒŒ ๋์Šต๋‹ˆ๋‹ค.
13:14
And we developed a pattern together
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์šฐ๋ฆฌ๋Š” ์ ‘๊ธฐ ํŒจํ„ด์„ ๊ฐœ๋ฐœํ–ˆ๋Š”๋ฐ,
13:16
that scales to arbitrarily large size,
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์•„์ฃผ ํฐ ํฌ๊ธฐ์—๋„ ์ ์šฉํ•  ์ˆ˜ ์žˆ์—ˆ์œผ๋ฉฐ,
13:18
but that allows any flat ring or disc
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๋‚ฉ์ž‘ํ•œ ์› ๋ชจ์–‘์ด๋“  ๋ฐ˜์ง€ ๋ชจ์–‘์ด๋“  ์ƒ๊ด€์—†์ด
13:22
to fold down into a very neat, compact cylinder.
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์•„์ฃผ ์ž‘์€ ์›๊ธฐ๋‘ฅ ๋ชจ์–‘์œผ๋กœ ๊น”๋”ํ•˜๊ฒŒ ์ ‘์„ ์ˆ˜ ์žˆ์—ˆ์Šต๋‹ˆ๋‹ค.
13:25
And they adopted that for their first generation,
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1์„ธ๋Œ€ ์‹œํ—˜์šฉ ๋ง์›๊ฒฝ ๋ Œ์ฆˆ๋Š”
13:27
which was not 100 meters -- it was a five-meter.
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100๋ฏธํ„ฐ๊ฐ€ ์•„๋‹Œ 5๋ฏธํ„ฐ๋กœ ์‹œ์ž‘ํ–ˆ์ฃ .
13:29
But this is a five-meter telescope --
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ํ•˜์ง€๋งŒ ์ด 5๋ฏธํ„ฐ ๋ง์›๊ฒฝ์˜
13:31
has about a quarter-mile focal length.
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์ดˆ์ ๊ฑฐ๋ฆฌ๋Š” 400๋ฏธํ„ฐ๋‚˜ ๋ฉ๋‹ˆ๋‹ค.
13:33
And it works perfectly on its test range,
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์‹œํ—˜ ๋น„ํ–‰์—์„œ๋„ ์ž˜ ์ž‘๋™ํ–ˆ๊ณ 
13:35
and it indeed folds up into a neat little bundle.
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์—ญ์‹œ๋‚˜ ์ž‘์€ ๊พธ๋Ÿฌ๋ฏธ๋กœ ๊น”๋”ํ•˜๊ฒŒ ์ ‘ํž™๋‹ˆ๋‹ค.
13:39
Now, there is other origami in space.
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์šฐ์ฃผ์— ๋‹ค๋ฅธ ์ข…์ด์ ‘๊ธฐ ์ž‘ํ’ˆ๋„ ์žˆ์Šต๋‹ˆ๋‹ค.
13:41
Japan Aerospace [Exploration] Agency flew a solar sail,
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์ผ๋ณธ ์šฐ์ฃผํ•ญ๊ณต์—ฐ๊ตฌ๊ฐœ๋ฐœ๊ธฐ๊ตฌ์—์„œ ํƒœ์–‘๋›์„ ์˜ฌ๋ ค๋ณด๋ƒˆ๋Š”๋ฐ
13:44
and you can see here that the sail expands out,
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์—ฌ๊ธฐ ๋ณด์‹œ๋ฉด ํŽผ์ณ์ง„ ๋›์„ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
13:47
and you can still see the fold lines.
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์ ‘ํžˆ๋Š” ๋ถ€๋ถ„์ด ์ƒ์ƒํ•˜๊ฒŒ ๋ณด์ด์ฃ .
13:49
The problem that's being solved here is
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์—ฌ๊ธฐ์„œ ์šฐ๋ฆฌ๊ฐ€ ํ•ด๊ฒฐํ•ด์•ผ ํ–ˆ๋˜ ๋ฌธ์ œ๋Š”
13:52
something that needs to be big and sheet-like at its destination,
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์šด๋ฐ˜ํ•  ๋•Œ ์ž‘์ง€๋งŒ ๋ชฉ์ ์ง€์—์„œ๋Š” ํฐ ์ข…์ด ํ•œ ์žฅ์œผ๋กœ ํŽผ์ณ์งˆ
13:55
but needs to be small for the journey.
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๋ฌผ๊ฑด์„ ๋งŒ๋“ค์–ด์•ผ ํ–ˆ๋˜ ๊ฒ๋‹ˆ๋‹ค.
13:57
And that works whether you're going into space,
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์ด ๊ธฐ์ˆ ์€ ์šฐ์ฃผ์—์„œ๋„ ์œ ์šฉํ•˜์ง€๋งŒ
14:00
or whether you're just going into a body.
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์ธ์ฒด์—์„œ๋„ ๋งค์šฐ ์œ ์šฉํ•ฉ๋‹ˆ๋‹ค.
14:03
And this example is the latter.
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๋‹ค์Œ์€ ํ›„์ž์˜ ์˜ˆ์ž…๋‹ˆ๋‹ค.
14:05
This is a heart stent developed by Zhong You
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์˜ฅ์Šคํผ๋“œ ๋Œ€ํ•™์˜ ์ • ์œ ๊ฐ€ ๊ฐœ๋ฐœํ•œ
14:08
at Oxford University.
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์‹ฌ์žฅ ์Šคํ…ํŠธ์ž…๋‹ˆ๋‹ค.
14:10
It holds open a blocked artery when it gets to its destination,
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๋ชฉ์ ์ง€์—์„œ ํŽผ์ณ์ ธ ํ์ƒ‰๋™๋งฅ์„ ์ง€ํƒฑํ•ด์•ผ ํ•˜๋Š”๋ฐ,
14:13
but it needs to be much smaller for the trip there,
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ํ˜ˆ๊ด€์„ ํ†ต๊ณผํ•ด์„œ ๋„์ฐฉํ•˜๊ธฐ ์ด์ „์—๋Š”
14:16
through your blood vessels.
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ํ›จ์”ฌ ์ž‘์€ ํฌ๊ธฐ์—ฌ์•ผ ํ•ฉ๋‹ˆ๋‹ค.
14:18
And this stent folds down using an origami pattern,
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์ด ์Šคํ…ํŠธ๋Š” ๋ฌผํ’์„  ๋ชจํ˜•์„ ๋ฒ ์ด์Šค๋กœ ํ•œ
14:21
based on a model called the water bomb base.
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์ข…์ด์ ‘๊ธฐ ํŒจํ„ด์„ ์ด์šฉํ•˜์—ฌ ์ ‘ํž™๋‹ˆ๋‹ค.
14:25
Airbag designers also have the problem
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์—์–ด๋ฐฑ ์„ค๊ณ„์ž๋“ค๋„ ์—์–ด๋ฐฑ์„
14:27
of getting flat sheets
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์ž‘์€ ๊ณต๊ฐ„์—
14:29
into a small space.
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์–ด๋–ป๊ฒŒ ์ ‘์–ด๋„ฃ์–ด์•ผํ• ์ง€ ๊ณ ๋ฏผํ•ฉ๋‹ˆ๋‹ค.
14:32
And they want to do their design by simulation.
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์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ํ•˜๊ธฐ ์œ„ํ•ด
14:34
So they need to figure out how, in a computer,
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๊ทธ๋“ค์€ ์ปดํ“จํ„ฐ๋ฅผ ์ด์šฉํ•ด์„œ
14:36
to flatten an airbag.
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์—์–ด๋ฐฑ ์ ‘๊ธฐํŒจํ„ด์„ ๊ตฌํ•ด์•ผํ•ฉ๋‹ˆ๋‹ค.
14:38
And the algorithms that we developed
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๊ทธ๋žฌ๋”๋‹ˆ ์šฐ๋ฆฌ๊ฐ€ ๊ฐœ๋ฐœํ–ˆ๋˜
14:40
to do insects
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๊ณค์ถฉ ์ ‘๊ธฐํŒจํ„ด ์•Œ๊ณ ๋ฆฌ์ฆ˜์„
14:42
turned out to be the solution for airbags
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์—์–ด๋ฐฑ ์‹œ๋ฎฌ๋ ˆ์ด์…˜์— ์ ์šฉํ•  ์ˆ˜ ์žˆ๋‹จ ๊ฑธ
14:45
to do their simulation.
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๋ฐœ๊ฒฌํ–ˆ์Šต๋‹ˆ๋‹ค.
14:47
And so they can do a simulation like this.
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๊ทธ๋ž˜์„œ ์ด๋ ‡๊ฒŒ ์‹œ๋ฎฌ๋ ˆ์ด์…˜์ด ๊ฐ€๋Šฅํ•˜์ฃ .
14:50
Those are the origami creases forming,
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์ ‘ํžˆ๋Š” ๋ถ€๋ถ„๋“ค์ด ๋ณด์ด์‹ญ๋‹ˆ๊นŒ?
14:52
and now you can see the airbag inflate
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์ด์ œ ์ด๋ ‡๊ฒŒ ์—์–ด๋ฐฑ์„ ํŽผ์น˜๋ฉด
14:54
and find out, does it work?
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์—์–ด๋ฐฑ ์ž‘๋™์—ฌ๋ถ€๋ฅผ ํ™•์ธํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
14:57
And that leads
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์ •๋ง ์žฌ๋ฐŒ๋Š” ๊ฒƒ์€
14:59
to a really interesting idea.
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์—ฌ๊ธฐ์„œ๋ถ€ํ„ฐ ์ž…๋‹ˆ๋‹ค.
15:01
You know, where did these things come from?
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์ด๊ฒŒ ๋‹ค ์–ด๋””์„œ ๋‚˜์˜ค๋Š” ๊ฑธ๊นŒ์š”?
15:04
Well, the heart stent
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์‹ฌ์žฅ ์Šคํ…ํŠธ๋Š”
15:06
came from that little blow-up box
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์šฐ๋ฆฌ๊ฐ€ ์ดˆ๋“ฑํ•™๊ต ๋•Œ ๋ฐฐ์› ์„ ๋ฒ•ํ•œ
15:08
that you might have learned in elementary school.
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ํ’์„ /๊ณต ์ ‘๊ธฐํŒจํ„ด์—์„œ ๋น„๋กฏ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.
15:11
It's the same pattern, called the water bomb base.
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๋ฌผํ’์„  ๋ฒ ์ด์Šค์™€ ๊ฐ™์€ ์ ‘๊ธฐํŒจํ„ด์ด์ฃ .
15:14
The airbag-flattening algorithm
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์—์–ด๋ฐฑ ์ ‘๊ธฐ ์•Œ๊ณ ๋ฆฌ์ฆ˜์„
15:16
came from all the developments
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๊ฐœ๋ฐœํ•˜๋Š”๋ฐ ์“ฐ์˜€๋˜
15:18
of circle packing and the mathematical theory
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์› ์ฑ„์šฐ๊ธฐ์™€ ์ˆ˜ํ•™ ์ด๋ก ์€ ์‚ฌ์‹ค
15:21
that was really developed
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๋‹ค๋ฆฌ๊ฐ€ ์žˆ๋Š” ๊ณค์ถฉ ์ ‘๊ธฐํŒจํ„ด์„
15:23
just to create insects -- things with legs.
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๋งŒ๋“ค๊ธฐ ์œ„ํ•ด ์—ฐ๊ตฌํ–ˆ๋˜ ์ด๋ก ๋“ค์ž…๋‹ˆ๋‹ค.
15:27
The thing is, that this often happens
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์ด๋Ÿฐ ์˜ˆ๋Š” ์ˆ˜ํ•™ ๊ณผํ•™ ๋ถ„์•ผ์—
15:29
in math and science.
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์ž์ฃผ ๋ฐœ์ƒํ•˜๋Š” ์ผ์ž…๋‹ˆ๋‹ค.
15:31
When you get math involved, problems that you solve
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๋ฌธ์ œ์— ์ˆ˜ํ•™ ์ด๋ก ์„ ์ ์šฉ์‹œํ‚ค๊ฒŒ ๋˜๋ฉด
15:34
for aesthetic value only,
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๋‹จ์ง€ ์˜ˆ์ˆ ์  ๊ฐ€์น˜๋ฅผ ์ง€๋‹Œ ๋ฌผ๊ฑด์„
15:36
or to create something beautiful,
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์ฐฝ์กฐํ•˜๊ธฐ ์œ„ํ•ด ์“ฐ์ธ ๊ฒƒ๋“ค์ด
15:38
turn around and turn out
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์˜์™ธ๋กœ ์‹ค์ œ ์„ธ์ƒ์—์„œ๋„
15:40
to have an application in the real world.
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์œ ์šฉํ•˜๊ฒŒ ์ ์šฉ์‹œํ‚ฌ ๊ณณ์ด ์žˆ์Šต๋‹ˆ๋‹ค.
15:43
And as weird and surprising as it may sound,
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๋†€๋ž๊ณ  ์ด์ƒํ•˜๊ฒŒ ๋“ค๋ฆด์ง€๋„ ๋ชจ๋ฅด๊ฒ ์ง€๋งŒ
15:46
origami may someday even save a life.
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์ข…์ด์ ‘๊ธฐ๊ฐ€ ์ƒ๋ช…์„ ๊ตฌํ•  ๋‚ ์ด ์˜ฌ์ง€๋„ ๋ชจ๋ฆ…๋‹ˆ๋‹ค.
15:50
Thanks.
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๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค.
15:52
(Applause)
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(๋ฐ•์ˆ˜)
์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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