Math is the hidden secret to understanding the world | Roger Antonsen
1,857,517 views ・ 2016-12-13
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譯者: Regina Chu
審譯者: Kuan-Yi Li
嗨!
00:13
Hi.
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00:14
I want to talk about understanding,
and the nature of understanding,
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我想跟大家談談理解、理解的本質,
00:18
and what the essence of understanding is,
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及什麼是理解的精髓,
00:21
because understanding is something
we aim for, everyone.
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因為理解是我們每個人的目標。
00:24
We want to understand things.
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我們想要理解萬物。
00:27
My claim is that understanding has to do
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我的主張是理解
與你能不能改變你的觀點大有關係。
00:30
with the ability to change
your perspective.
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00:32
If you don't have that,
you don't have understanding.
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如果你不能,你就不能理解。
所以那是我的主張。
00:36
So that is my claim.
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00:37
And I want to focus on mathematics.
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我想把焦點集中在數學。
許多人認為數學就是
00:40
Many of us think of mathematics
as addition, subtraction,
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加、減、乘、除、
00:43
multiplication, division,
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00:45
fractions, percent, geometry,
algebra -- all that stuff.
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分數、百分比、幾何、
代數這些東西。
可是其實我也想談數學的本質。
00:50
But actually, I want to talk
about the essence of mathematics as well.
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00:53
And my claim is that mathematics
has to do with patterns.
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我的主張是數學跟模式有關。
(又譯胚騰)
在我後面大家可以看到
一個很漂亮的模式,
00:57
Behind me, you see a beautiful pattern,
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00:59
and this pattern actually emerges
just from drawing circles
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這個模式其實只要
用一種特別的方式畫圓就會出現。
01:03
in a very particular way.
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01:05
So my day-to-day definition
of mathematics that I use every day
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所以我對數學的簡單定義,
我每天都在用的,
01:10
is the following:
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就是:
第一,數學就是找出模式。
01:12
First of all, it's about finding patterns.
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我說的模式是指一種關聯、
一種結構,有某種規律性,
01:16
And by "pattern," I mean a connection,
a structure, some regularity,
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01:21
some rules that govern what we see.
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某些規則,掌控我們所見。
第二,
01:24
Second of all,
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我認為它以一種語言表達這些模式。
01:25
I think it is about representing
these patterns with a language.
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01:29
We make up language if we don't have it,
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如果找不到我們就自己編新語言。
01:31
and in mathematics, this is essential.
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而在數學,這非常必要。
這也跟你做了假設,
01:35
It's also about making assumptions
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01:36
and playing around with these assumptions
and just seeing what happens.
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然後玩一下假設
來看看會發生什麼事有關。
01:40
We're going to do that very soon.
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我們等一下就會這麼做。
01:42
And finally, it's about doing cool stuff.
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最後,這還跟做出很酷的東西有關。
01:46
Mathematics enables us
to do so many things.
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數學能讓我們做很多事。
01:50
So let's have a look at these patterns.
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所以現在就來看一下這些模式。
01:52
If you want to tie a tie knot,
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如果你要打領帶,
這裡有幾種打法。
01:55
there are patterns.
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01:56
Tie knots have names.
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領帶打出的結都有名字。
01:58
And you can also do
the mathematics of tie knots.
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你也可以用數學來分析領結。
02:00
This is a left-out, right-in,
center-out and tie.
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有左外、右內、
中間翻出來的打法。
還有左內、右外、左內、
中間翻出來的打法。
02:04
This is a left-in, right-out,
left-in, center-out and tie.
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這就是我們為領結模式
創造出的語言,
02:08
This is a language we made up
for the patterns of tie knots,
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02:12
and a half-Windsor is all that.
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半溫莎結也能這樣表示。
02:15
This is a mathematics book
about tying shoelaces
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這是本綁鞋帶的數學書,
02:18
at the university level,
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──大學程度,
02:19
because there are patterns in shoelaces.
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因為這些是鞋帶的模式。
02:21
You can do it in so many different ways.
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你可以用很多不同的方式綁。
02:23
We can analyze it.
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你可以分析綁法。
我們能為之創造語言。
02:25
We can make up languages for it.
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02:28
And representations
are all over mathematics.
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數學裡充滿了各種表式式。
02:31
This is Leibniz's notation from 1675.
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這是 1675 年的萊布尼茲表示法。
02:35
He invented a language
for patterns in nature.
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他為自然界的模式創造了一種語言。
02:39
When we throw something up in the air,
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我們往上丟東西到空中,
02:41
it falls down.
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它會掉下來。
02:42
Why?
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為什麼?
02:43
We're not sure, but we can represent
this with mathematics in a pattern.
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我們不太確定,但是我們能用
數學模式表達這種現象。
02:48
This is also a pattern.
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這也是一種模式。
02:49
This is also an invented language.
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這也是一種創造出的語言。
02:52
Can you guess for what?
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你能猜到這是什麼嗎?
02:55
It is actually a notation system
for dancing, for tap dancing.
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這其實是一種舞譜,給踢踏舞用的。
02:59
That enables him as a choreographer
to do cool stuff, to do new things,
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這讓他身為編舞者
能做很酷的動作,做新的動作,
03:04
because he has represented it.
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因為他能表達出來。
03:07
I want you to think about how amazing
representing something actually is.
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我要大家想一下能把
某種事物表達出來有多厲害!
03:12
Here it says the word "mathematics."
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這裡寫著「數學」這個詞。
03:15
But actually, they're just dots, right?
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但是其實只有幾個點,對吧?
03:18
So how in the world can these dots
represent the word?
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所以這幾個點到底怎麼表達這個詞?
03:21
Well, they do.
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的確可以。
03:23
They represent the word "mathematics,"
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它們表達「數學」這個詞,
03:25
and these symbols also represent that word
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這些符號也表達那個詞,
03:27
and this we can listen to.
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我們可以用聽的。
03:29
It sounds like this.
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它聽起來像這樣。
03:30
(Beeps)
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(嗶嗶聲)
03:32
Somehow these sounds represent
the word and the concept.
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這些聲音表達出這個詞和概念。
03:36
How does this happen?
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怎麼會這樣呢?
03:37
There's something amazing
going on about representing stuff.
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表達是一件很厲害的事。
03:41
So I want to talk about
that magic that happens
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我想談談實際表達某樣東西時,
03:47
when we actually represent something.
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那種不可思議的魔力。
03:49
Here you see just lines
with different widths.
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這裡你們看到的
只是不同粗細的線條。
03:52
They stand for numbers
for a particular book.
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這是某一本書的條碼。
03:55
And I can actually recommend
this book, it's a very nice book.
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我很推薦這本書,很不錯的一本書。
03:58
(Laughter)
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(笑聲)
03:59
Just trust me.
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相信我!
04:01
OK, so let's just do an experiment,
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好,我們來做個實驗,
04:03
just to play around
with some straight lines.
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就來玩一下幾條直線。
這是一條直線。
04:06
This is a straight line.
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04:07
Let's make another one.
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來畫另外一條。
04:08
So every time we move,
we move one down and one across,
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我們每移動一次,
向下一點,衡過去一點,
04:11
and we draw a new straight line, right?
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我們就畫出一條新的直線,對嗎?
04:13
We do this over and over and over,
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我們不斷重複這個過程,
04:16
and we look for patterns.
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我們尋找模式。
04:17
So this pattern emerges,
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所以這種模式出現,
04:20
and it's a rather nice pattern.
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還蠻不錯的模式。
04:22
It looks like a curve, right?
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看起來像弧線,對嗎?
只是畫簡單的直線就得到這個。
04:24
Just from drawing simple, straight lines.
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04:27
Now I can change my perspective
a little bit. I can rotate it.
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現在我可以改變一下視角。
我可以把它轉一下。
04:30
Have a look at the curve.
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看一下這條弧線。
04:32
What does it look like?
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看起來像什麼?
04:33
Is it a part of a circle?
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像圓的一部分嗎?
04:35
It's actually not a part of a circle.
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這其實不是圓的一部分。
04:37
So I have to continue my investigation
and look for the true pattern.
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所以我得繼續研究並尋找真的模式。
04:41
Perhaps if I copy it and make some art?
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或許我能複製一下做成某種藝術品?
04:45
Well, no.
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嗯,不好。
04:46
Perhaps I should extend
the lines like this,
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或許我應該把線像這樣延長,
然後在那裡找模式。
04:49
and look for the pattern there.
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04:50
Let's make more lines.
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再多畫幾條線。
我們這樣做。
04:52
We do this.
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04:53
And then let's zoom out
and change our perspective again.
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然後我們拉遠再改變一下視角。
04:57
Then we can actually see that
what started out as just straight lines
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我們就會看到原來只是幾條直線,
05:01
is actually a curve called a parabola.
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變成稱為拋物線的弧線。
05:03
This is represented by a simple equation,
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這可以用一條簡單的方程式來代表,
而且這是很漂亮的模式。
05:07
and it's a beautiful pattern.
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05:09
So this is the stuff that we do.
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所以這就是我們做的事。
05:11
We find patterns, and we represent them.
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我們找模式,表達出來。
05:13
And I think this is a nice
day-to-day definition.
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我認為這是很好的簡單版定義。
05:16
But today I want to go
a little bit deeper,
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但是今天我想深入一點點,
05:18
and think about
what the nature of this is.
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並思考一下這個的本質。
05:22
What makes it possible?
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是什麼讓它成為可能?
05:24
There's one thing
that's a little bit deeper,
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我有個稍微深入一點的東西,
05:26
and that has to do with the ability
to change your perspective.
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還跟你能不能改變觀點有關。
我主張當你改變觀點,
05:30
And I claim that when
you change your perspective,
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05:32
and if you take another point of view,
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如果你能用另一個視角來看,
05:35
you learn something new
about what you are watching
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你會從你正在看、正在觀察、
05:39
or looking at or hearing.
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正在聽的東西裡學到新東西。
05:41
And I think this is a really important
thing that we do all the time.
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我認為這很重要,
我們應該時時這麼做。
05:45
So let's just look at
this simple equation,
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來看一下這個簡單的等式,
05:49
x + x = 2 • x.
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x + x = 2 ⋅ x
05:52
This is a very nice pattern,
and it's true,
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這是很棒的模式,而且是準確的,
05:54
because 5 + 5 = 2 • 5, etc.
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因為 5 + 5 = 2 ⋅ 5,依此類推。
05:57
We've seen this over and over,
and we represent it like this.
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我們不斷看到這個,
所以我們像這樣來表達。
06:00
But think about it: this is an equation.
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但是想一下:這是條等式。
它說某樣東西等於另一種東西,
06:03
It says that something
is equal to something else,
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06:05
and that's two different perspectives.
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這是兩種不同的觀點。
06:07
One perspective is, it's a sum.
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一方面來說這是總和,
06:09
It's something you plus together.
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是你把東西加起來。
06:11
On the other hand, it's a multiplication,
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另一方面,這又是乘法,
這是兩個不同的觀點。
06:14
and those are two different perspectives.
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我甚至要大膽的說
每一條像這樣的等式,
06:17
And I would go as far as to say
that every equation is like this,
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06:20
every mathematical equation
where you use that equality sign
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每一條你用了等號的數學式
都是一種隱喻。
06:25
is actually a metaphor.
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06:26
It's an analogy between two things.
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這是兩種事物之間的類比。
06:28
You're just viewing something
and taking two different points of view,
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你用兩種不同的視角看著某樣東西,
06:32
and you're expressing that in a language.
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而且你用一種語言表示出來。
06:34
Have a look at this equation.
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看一下這個方程式。
06:36
This is one of the most
beautiful equations.
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這是一條非常漂亮的方程式。
06:38
It simply says that, well,
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它就是說,嗯,
06:41
two things, they're both -1.
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兩種東西都是 -1。
06:44
This thing on the left-hand side is -1,
and the other one is.
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左邊這個東西是 -1,右邊也是。
06:47
And that, I think, is one
of the essential parts
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我認為那就是
數學的本質之一:
你用不同的視角觀察。
06:50
of mathematics -- you take
different points of view.
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06:52
So let's just play around.
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我們就來玩一下。
06:53
Let's take a number.
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隨便拿一個數字。
06:55
We know four-thirds.
We know what four-thirds is.
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我們知道 4/3。
我們都知道 4/3 是什麼。
它是 1.333,後面還要加上這三個點,
06:58
It's 1.333, but we have to have
those three dots,
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07:01
otherwise it's not exactly four-thirds.
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要不然就不是精確的 4/3。
07:03
But this is only in base 10.
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但這只是以 10 為基數的說法。
07:05
You know, the number system,
we use 10 digits.
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你知道,數字系統,我們用十進位。
如果我們變一下只用 2 為基數,
07:08
If we change that around
and only use two digits,
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07:10
that's called the binary system.
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就是所謂的二進位系統,
07:12
It's written like this.
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寫起來就像這樣。
07:13
So we're now talking about the number.
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所以我們現在來談談這個數字。
07:15
The number is four-thirds.
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數字為 4/3。
07:17
We can write it like this,
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我們可以像這樣寫,
07:19
and we can change the base,
change the number of digits,
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我們只要改變基數,
07:22
and we can write it differently.
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就會寫成不同的樣子。
這些是同一個數字的不同表示法。
07:24
So these are all representations
of the same number.
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07:28
We can even write it simply,
like 1.3 or 1.6.
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我們甚至可以簡化它
成為 1.3 或 1.6。
07:31
It all depends on
how many digits you have.
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就看你有幾位數。
07:34
Or perhaps we just simplify
and write it like this.
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或者我們只要簡寫成這樣。
07:37
I like this one, because this says
four divided by three.
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我喜歡這個,
因為這是說把 4 除以 3。
這個數字表示出
這兩個數字間的關係。
07:41
And this number expresses
a relation between two numbers.
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07:44
You have four on the one hand
and three on the other.
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你有 4 在一邊,3 在另一邊。
07:47
And you can visualize this in many ways.
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你還可以用很多方法把它視覺化。
07:49
What I'm doing now is viewing that number
from different perspectives.
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我現在就是用不同的
視角看這個數字。
07:53
I'm playing around.
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我在嘗試。
07:54
I'm playing around with
how we view something,
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我在試我們怎麼看某件事物,
而且我還很刻意去做。
07:57
and I'm doing it very deliberately.
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07:58
We can take a grid.
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我們可以拿格子。
如果有 4 個橫的 3 個直的,
這條線永遠都等於 5。
08:00
If it's four across and three up,
this line equals five, always.
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08:04
It has to be like this.
This is a beautiful pattern.
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必然如此。
這是一個很漂亮的模式。
08:07
Four and three and five.
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4 與 3 與 5。
這個長方形,就是 4 × 3,
08:09
And this rectangle, which is 4 x 3,
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08:11
you've seen a lot of times.
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你看過很多次。
08:13
This is your average computer screen.
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這是一般的電腦螢幕。
08:15
800 x 600 or 1,600 x 1,200
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800 × 600 或 1,600 × 1,200
08:18
is a television or a computer screen.
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是電視或電腦螢幕。
08:21
So these are all nice representations,
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所以這些都是很好的表示法,
08:23
but I want to go a little bit further
and just play more with this number.
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但我還想進一步
再多玩一下這個數字。
08:27
Here you see two circles.
I'm going to rotate them like this.
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你在這裡看到兩個圓。
我把它們像這樣轉一下。
觀察一下左上那個。
08:31
Observe the upper-left one.
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08:32
It goes a little bit faster, right?
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它轉的比較快,對嗎?
你可以觀察到。
08:35
You can see this.
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08:36
It actually goes exactly
four-thirds as fast.
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它就是快 4/3。
08:39
That means that when it goes
around four times,
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那代表它每轉四次,
另外一個就轉三次。
08:42
the other one goes around three times.
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現在畫兩條線,在交會處畫一個點。
08:44
Now let's make two lines, and draw
this dot where the lines meet.
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08:47
We get this dot dancing around.
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我們就得到轉圈圈的點。
08:49
(Laughter)
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(笑聲)
08:50
And this dot comes from that number.
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這個點從那個數字來。
08:52
Right? Now we should trace it.
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對嗎?我們應該畫它的軌跡。
08:55
Let's trace it and see what happens.
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我們來畫一下軌跡看看會得到什麼。
08:57
This is what mathematics is all about.
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這就是數學。
08:59
It's about seeing what happens.
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想看看會得到什麼。
這得自 4/3。
09:01
And this emerges from four-thirds.
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我想說這是 4/3 的圖像。
09:04
I like to say that this
is the image of four-thirds.
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09:07
It's much nicer -- (Cheers)
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這個棒多了。(歡呼聲)
09:08
Thank you!
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謝謝!
09:09
(Applause)
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(掌聲)
09:16
This is not new.
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這不是新發現。
09:17
This has been known
for a long time, but --
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這是早就知道的東西,但是
09:19
(Laughter)
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(笑聲)
09:21
But this is four-thirds.
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但是這是 4/3。
再來做另外一個實驗。
09:23
Let's do another experiment.
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09:24
Let's now take a sound, this sound: (Beep)
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來弄點聲音,這個聲音:(嗶)
09:28
This is a perfect A, 440Hz.
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這是標準音高 A440。
09:31
Let's multiply it by two.
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把頻率乘以 2。
09:33
We get this sound. (Beep)
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我們就得到這個音(嗶)。
09:34
When we play them together,
it sounds like this.
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兩個音一起彈,聽起來像這樣。
09:37
This is an octave, right?
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這是個八度音,對吧?
09:38
We can do this game. We can play
a sound, play the same A.
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我們可以玩個遊戲。
我們可以彈一個音,同樣的 A。
09:41
We can multiply it by three-halves.
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然後乘上 3/2。
09:42
(Beep)
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(嗶)
09:44
This is what we call a perfect fifth.
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這是我們說的完全五度。
09:46
(Beep)
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(嗶)
09:47
They sound really nice together.
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這幾個音加起來真的很好聽。
09:49
Let's multiply this sound
by four-thirds. (Beep)
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把這個乘上 4/3。(嗶)
09:53
What happens?
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會得到什麼?
09:55
You get this sound. (Beep)
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這個音。(嗶)
09:57
This is the perfect fourth.
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這是完全四度。
09:58
If the first one is an A, this is a D.
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如果第一個音是 A,這就是 D。
10:00
They sound like this together. (Beeps)
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合奏聽起來像這樣。(嗶嗶)
10:02
This is the sound of four-thirds.
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這就是 4/3 的聲音。
10:05
What I'm doing now,
I'm changing my perspective.
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我現在做的就是改變我的觀點。
10:07
I'm just viewing a number
from another perspective.
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我只是用另一個觀點來看一個數字。
10:10
I can even do this with rhythms, right?
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我甚至可以用節拍來做,對吧?
10:12
I can take a rhythm and play
three beats at one time (Drumbeats)
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我可以加上節拍,
一段時間內打三拍。
10:16
in a period of time,
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(鼓聲)
我也可以用另一種聲音
在同樣一段時間內敲四次。
10:18
and I can play another sound
four times in that same space.
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10:22
(Clanking sounds)
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(金屬敲擊聲)
10:23
Sounds kind of boring,
but listen to them together.
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聽起來有點無聊,
但是把它們加起來聽。
10:25
(Drumbeats and clanking sounds)
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(鼓和金屬聲)
10:28
(Laughter)
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(笑聲)
嘿!好聽吧?
10:30
Hey! So.
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10:31
(Laughter)
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(笑聲)
10:33
I can even make a little hi-hat.
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我甚至可以加點腳踏鈸。
10:35
(Drumbeats and cymbals)
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(鼓及鈸聲)
10:37
Can you hear this?
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聽到了嗎?
10:38
So, this is the sound of four-thirds.
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所以,這就是 4/3 的聲音。
10:40
Again, this is as a rhythm.
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同樣的,這也以節拍表達。
10:42
(Drumbeats and cowbell)
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(鼓聲及牛鈴)
10:44
And I can keep doing this
and play games with this number.
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我可以一直做下去,
繼續玩這個數字,
10:47
Four-thirds is a really great number.
I love four-thirds!
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4/3 真的是很棒的數字,
我愛 4/3!
(笑聲)
10:50
(Laughter)
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10:51
Truly -- it's an undervalued number.
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真的,這是個被看扁的數字。
10:53
So if you take a sphere and look
at the volume of the sphere,
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所以如果你拿一個球看它的體積,
10:56
it's actually four-thirds
of some particular cylinder.
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它就是某圓柱的 4/3。
10:59
So four-thirds is in the sphere.
It's the volume of the sphere.
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所以球裡也有 4/3,
就是這個球的體積。
11:03
OK, so why am I doing all this?
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好,我為什麼要說這些?
11:05
Well, I want to talk about what it means
to understand something
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嗯,我想談一下
理解事物是什麼意思。
以及我們說理解又是什麼意思。
11:09
and what we mean
by understanding something.
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11:11
That's my aim here.
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那是我今天的目的。
我的主張是你要理解某項事物,
11:13
And my claim is that
you understand something
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11:15
if you have the ability to view it
from different perspectives.
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就要有能力從不同的角度來看它。
11:18
Let's look at this letter.
It's a beautiful R, right?
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2541
來看這個字母,
很漂亮的 R,對吧?
11:20
How do you know that?
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你怎麼知道?
11:22
Well, as a matter of fact,
you've seen a bunch of R's,
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嗯,其實,你已經看過一堆的 R,
11:25
and you've generalized
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1645
你歸納
11:27
and abstracted all of these
and found a pattern.
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並抽象化這些 R,並找出模式。
11:30
So you know that this is an R.
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所以你知道這是 R。
11:35
So what I'm aiming for here
is saying something
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所以我今天的目的是要告訴大家
11:38
about how understanding
and changing your perspective
267
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理解及改變你的觀點
11:41
are linked.
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如何連在一起。
11:43
And I'm a teacher and a lecturer,
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我是老師及講師,
11:45
and I can actually use this
to teach something,
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我其實可以用這個來教某樣東西,
11:47
because when I give someone else
another story, a metaphor, an analogy,
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因為每當我說一個故事、
一段隱喻、一段類比,
11:52
if I tell a story
from a different point of view,
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如果我用不同的角度來說一個故事,
我就在讓你理解。
11:55
I enable understanding.
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11:56
I make understanding possible,
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我讓理解成為可能,
11:58
because you have to generalize
over everything you see and hear,
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因為你必須歸納每一樣
你見到及聽到的事物,
12:01
and if I give you another perspective,
that will become easier for you.
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如果我給你另外的觀點,
你就更容易歸納。
12:06
Let's do a simple example again.
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再來一個簡單的例子。
這是 4 和 3 。
這是四個三角形。
12:08
This is four and three.
This is four triangles.
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12:10
So this is also four-thirds, in a way.
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所以在某種意義上這也是 4/3。
12:13
Let's just join them together.
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1722
把它們連在一起。
現在我們來玩一個遊戲;
我們要把它折成
12:15
Now we're going to play a game;
we're going to fold it up
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12:17
into a three-dimensional structure.
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一個三度空間的結構。
12:19
I love this.
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我很愛這個。
12:20
This is a square pyramid.
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這是一個正方錐。
12:22
And let's just take two of them
and put them together.
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就拿兩個出來放在一起。
12:25
So this is what is called an octahedron.
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這個就叫做八面體。
12:28
It's one of the five platonic solids.
287
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這是五種柏拉圖立體之一。
現在我們真的可以改變視角,
12:31
Now we can quite literally
change our perspective,
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2445
12:33
because we can rotate it
around all of the axes
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2695
因為我們可以讓它繞著各軸旋轉,
12:36
and view it from different perspectives.
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從各種不同的角度來看。
12:38
And I can change the axis,
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我可以改變軸,
12:40
and then I can view it
from another point of view,
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然後從另一個視點來看它,
12:42
but it's the same thing,
but it looks a little different.
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這是同一個東西,
只是看起來有點不一樣。
12:45
I can do it even one more time.
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我可以再做一次。
12:47
Every time I do this,
something else appears,
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每次做都有不同的東西出現,
12:50
so I'm actually learning
more about the object
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2179
所以我真的從這個物體中
學到更多東西,
12:52
when I change my perspective.
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只要我改變角度。
12:54
I can use this as a tool
for creating understanding.
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我能用這個當工具引發理解。
12:58
I can take two of these
and put them together like this
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我能把這兩個像這樣放在一起
然後看會發生什麼。
13:02
and see what happens.
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1247
13:03
And it looks a little bit
like the octahedron.
301
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這看起來有點像八面體。
13:07
Have a look at it if I spin
it around like this.
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我把它像這樣轉一轉,看一下。
13:09
What happens?
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什麼出現了?
嗯,如果你把兩個這樣的東西
放在一起,然後轉一轉,
13:11
Well, if you take two of these,
join them together and spin it around,
304
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3344
13:14
there's your octahedron again,
305
794376
2401
你的八面體又出現了,
13:16
a beautiful structure.
306
796801
1631
很漂亮的結構。
13:18
If you lay it out flat on the floor,
307
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2164
如果你把它平放在地板上,
13:20
this is the octahedron.
308
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1217
這是八面體。
13:21
This is the graph structure
of an octahedron.
309
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2703
這是八面體的圖結構。
13:25
And I can continue doing this.
310
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2373
我可以繼續做下去。
13:27
You can draw three great circles
around the octahedron,
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你可以在這個八面體旁畫三個大圓,
13:31
and you rotate around,
312
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然後轉一轉,
這三個大圓其實跟這個八面體相關。
13:33
so actually three great circles
is related to the octahedron.
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13:37
And if I take a bicycle pump
and just pump it up,
314
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3659
如果我拿一個打氣筒來打氣,
13:41
you can see that this is also
a little bit like the octahedron.
315
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3153
你會看到這也有點像八面體。
13:44
Do you see what I'm doing here?
316
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你看懂我在做什麼了嗎?
我一直在改變觀點。
13:47
I am changing the perspective every time.
317
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2681
13:50
So let's now take a step back --
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2650
我們現在退一步,
13:53
and that's actually
a metaphor, stepping back --
319
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3037
這其實也是一種隱喻,退一步,
13:56
and have a look at what we're doing.
320
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2363
來看看我們在做什麼。
13:58
I'm playing around with metaphors.
321
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1664
我正在嘗試隱喻。
14:00
I'm playing around
with perspectives and analogies.
322
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2472
我在嘗試各種觀點及類比。
我用不同的方法說同一個故事。
14:03
I'm telling one story in different ways.
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14:05
I'm telling stories.
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1210
我說很多故事。
14:06
I'm making a narrative;
I'm making several narratives.
325
846706
3184
我做一種敘述;我做很多種敘述。
14:09
And I think all of these things
make understanding possible.
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3522
我認為這些都在幫助我們理解。
14:13
I think this actually is the essence
of understanding something.
327
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3379
我認為這其實就是理解事物的精髓。
14:16
I truly believe this.
328
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1294
我真的相信這點。
14:18
So this thing about changing
your perspective --
329
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2427
所以改變你的觀點這件事
14:20
it's absolutely fundamental for humans.
330
860608
2733
對人類是非常重要的。
14:23
Let's play around with the Earth.
331
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1621
就來玩一下地球。
14:25
Let's zoom into the ocean,
have a look at the ocean.
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865474
2509
我們來放大海洋,看一下海洋。
什麼東西都可以拿來這樣玩。
14:28
We can do this with anything.
333
868007
1942
14:29
We can take the ocean
and view it up close.
334
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2460
我們可以近看海洋。
14:32
We can look at the waves.
335
872457
1934
我們可以看海浪。
14:34
We can go to the beach.
336
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1212
我們可以去海灘。
14:35
We can view the ocean
from another perspective.
337
875651
2263
我們能從不同的觀點看海洋。
14:37
Every time we do this, we learn
a little bit more about the ocean.
338
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3190
我們每次這麼做,
就對海洋多一點認識。
如果我們到海邊,
好像就可以聞到海,對吧?
14:41
If we go to the shore,
we can kind of smell it, right?
339
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2589
14:43
We can hear the sound of the waves.
340
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1710
我們能聽海浪的聲音。
14:45
We can feel salt on our tongues.
341
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2046
我們能用舌頭嘗到鹹味。
14:47
So all of these
are different perspectives.
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2890
所以這些都是不同的觀點。
14:50
And this is the best one.
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890483
1264
這個最棒。
14:51
We can go into the water.
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我們可以進到水中。
14:53
We can see the water from the inside.
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我們可以從裡面看水。
14:55
And you know what?
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你知道嗎?
14:56
This is absolutely essential
in mathematics and computer science.
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這在數學及電腦科學中不可或缺。
14:59
If you're able to view
a structure from the inside,
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如果你能從裡面看結構,
15:02
then you really learn something about it.
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那你真的能從中學到東西。
15:05
That's somehow the essence of something.
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那可以說是事物的精髓。
15:07
So when we do this,
and we've taken this journey
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就在剛剛那段旅程之中,
15:11
into the ocean,
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我們進入了海洋,
15:12
we use our imagination.
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──以我們的想像力。
15:14
And I think this is one level deeper,
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我想這更深一層了,
15:17
and it's actually a requirement
for changing your perspective.
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這實際上是改變觀點的必要條件。
15:21
We can do a little game.
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我們可以玩一個小遊戲。
你想像一下你坐在那裡。
15:23
You can imagine that you're sitting there.
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你想像一下你在台上這裡,
你坐在這裡。
15:25
You can imagine that you're up here,
and that you're sitting here.
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15:28
You can view yourselves from the outside.
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你可以從外面看自己。
15:30
That's really a strange thing.
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那真的很怪。
15:32
You're changing your perspective.
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你正在改變你的觀點。
15:34
You're using your imagination,
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你運用你的想像力,
15:36
and you're viewing yourself
from the outside.
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你從外面看自己。
那需要想像力。
15:39
That requires imagination.
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數學及電腦科學是最富
想像力的藝術形式。
15:41
Mathematics and computer science
are the most imaginative art forms ever.
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15:46
And this thing about changing perspectives
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改變觀點這件事
聽起來應該有點熟悉,
15:49
should sound a little bit familiar to you,
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2508
15:51
because we do it every day.
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因為我們每天都在做。
15:54
And then it's called empathy.
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那就叫做同理心。
15:56
When I view the world
from your perspective,
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當我從你的觀點看世界,
16:00
I have empathy with you.
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我就是站在你的立場設身處地。
16:02
If I really, truly understand
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如果我真的能理解
16:04
what the world looks
like from your perspective,
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從你的觀點所看到的世界,
16:07
I am empathetic.
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我就是將心比心。
那需要想像力。
16:09
That requires imagination.
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2180
16:11
And that is how we obtain understanding.
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那就是我們獲得理解的方法。
16:15
And this is all over mathematics
and this is all over computer science,
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這在數學界很普遍,
在電腦科學界也很普遍,
16:18
and there's a really deep connection
between empathy and these sciences.
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這兩種科學與同理心
也有很深的淵源。
16:25
So my conclusion is the following:
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所以我的結論就是:
16:29
understanding something really deeply
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要非常深入的理解事物,
跟你是否能改變觀點大有關係。
16:32
has to do with the ability
to change your perspective.
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2661
16:35
So my advice to you is:
try to change your perspective.
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所以我給大家的建議是:
試著改變你的觀點。
16:39
You can study mathematics.
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你能研究數學。
這是非常棒的方法來訓練大腦。
16:41
It's a wonderful way to train your brain.
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16:44
Changing your perspective
makes your mind more flexible.
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改變你的觀點讓你的心智更靈活。
16:48
It makes you open to new things,
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它能讓你接受新東西,
16:50
and it makes you
able to understand things.
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讓你能理解事物。
16:53
And to use yet another metaphor:
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再用一個隱喻來形容:
16:55
have a mind like water.
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讓你的心像水一樣。
16:56
That's nice.
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真好。
16:57
Thank you.
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謝謝。
(掌聲)
16:59
(Applause)
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