Would you opt for a life with no pain? - Hayley Levitt and Bethany Rickwald

3,282,372 views ・ 2015-11-17

TED-Ed


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

00:06
Imagine if you could plug your brain into a machine
0
6837
3207
00:10
that would bring you ultimate pleasure for the rest of your life.
1
10044
3276
00:13
If you were given the choice to sign up for that kind of existence, would you?
2
13320
4300
00:17
That's the question philosopher Robert Nozick posed
3
17620
2543
00:20
through a thought experiment he called the Experience Machine.
4
20163
3952
00:24
The experiment asks us to consider a world
5
24115
2180
00:26
in which scientists have developed a machine that would simulate real life
6
26295
4081
00:30
while guaranteeing experiences of only pleasure and never pain.
7
30376
5234
00:35
The catch?
8
35610
930
00:36
You have to permanently leave reality behind,
9
36540
2472
00:39
but you'll hardly know the difference.
10
39012
1833
00:40
Your experiences will be indistinguishable from reality.
11
40845
3401
00:44
Life's natural ups and downs
12
44246
1512
00:45
will just be replaced with an endless series of ups.
13
45758
4077
00:49
Sounds great, right?
14
49835
1566
00:51
It may seem like a tempting offer, but perhaps it's not as ideal as it sounds.
15
51401
4696
00:56
The experiment was actually designed to refute a philosophical notion
16
56097
3785
00:59
called hedonism.
17
59882
1698
01:01
According to hedonists,
18
61580
1417
01:02
maximizing net pleasure is the most important thing in life
19
62997
3943
01:06
because pleasure is the greatest good that life has to offer.
20
66940
3369
01:10
For hedonists, the best choice that a person could make for himself
21
70309
3178
01:13
is one that brings him the greatest possible amount of pleasure
22
73487
3635
01:17
while bringing him no pain.
23
77122
2209
01:19
Limitless pleasure minus zero pain equals maximum net pleasure,
24
79331
4368
01:23
or in other words, the exact scenario the Experience Machine offers.
25
83699
4725
01:28
Therefore, if hedonism is your philosophy of choice,
26
88424
2540
01:30
plugging in would be a no-brainer.
27
90964
3015
01:33
But what if there's more to life than just pleasure?
28
93979
2787
01:36
That's what Nozick believed he was demonstrating
29
96766
2281
01:39
through his Experience Machine thought experiment.
30
99047
3147
01:42
Despite the machine's promise of maximum net pleasure,
31
102194
2923
01:45
he still found reason not to plug in,
32
105117
2474
01:47
as do many other experimenters who consider the proposition.
33
107591
4266
01:51
But what could possibly dissuade us from choosing a future of ultimate pleasure?
34
111857
4813
01:56
Consider this scenario.
35
116670
1486
01:58
Betsy and Xander are in a loving, committed relationship.
36
118156
2917
02:01
Betsy is head over heels and has never felt happier.
37
121073
3248
02:04
However, unbeknownst to Betsy,
38
124321
1732
02:06
Xander has been romancing her sister, Angelica,
39
126053
3148
02:09
with love letters and secret rendezvous for the duration of their relationship.
40
129201
5202
02:14
If Betsy found out,
41
134403
1121
02:15
it would destroy her relationships with both Xander and Angelica,
42
135524
3958
02:19
and the experience would be so traumatic, she would never love again.
43
139482
4006
02:23
Since Betsy is in blissful ignorance about Xander's infidelity,
44
143488
3144
02:26
hedonists would say she's better off remaining in the dark
45
146632
3368
02:30
and maintaining her high level of net pleasure.
46
150000
3628
02:33
As long as Betsy never finds out about the relationship,
47
153628
2857
02:36
her life is guaranteed to go on as happily as it is right now.
48
156485
4719
02:41
So, is there value in Besty knowing the truth of her situation?
49
161204
4619
02:45
Imagine if you were Betsy.
50
165823
1738
02:47
Would you prefer to know the truth?
51
167561
2348
02:49
If the answer is yes,
52
169909
1151
02:51
you'd be choosing an option that sharply decreases your net pleasure.
53
171060
4280
02:55
Perhaps, then, you believe that there are things in life
54
175340
2603
02:57
with greater intrinsic value than pleasure.
55
177943
3000
03:00
Truth, knowledge, authentic connection with other human beings.
56
180943
3864
03:04
These are all things that might make the list.
57
184807
2859
03:07
By never learning the truth,
58
187666
1400
03:09
Betsy is essentially living life in her own personal Experience Machine,
59
189066
4143
03:13
a world of happiness that's not based in reality.
60
193209
3819
03:17
This love triangle is an extreme example,
61
197028
2313
03:19
but it mirrors many of the decisions we make in day to day life.
62
199341
4305
03:23
So whether you're making a choice for Betsy or for yourself,
63
203646
2924
03:26
why might you feel reality should be a factor?
64
206570
3528
03:30
Is there inherent value in real experiences,
65
210098
3017
03:33
whether pleasurable or painful?
66
213115
2403
03:35
Do you yourself have more value
67
215518
1870
03:37
when you're experiencing real life's pleasures and pains?
68
217388
4464
03:41
Nozick's experiment may not provide all the answers,
69
221852
2506
03:44
but it forces us to consider whether real life, though imperfect,
70
224358
4214
03:48
holds some intrinsic value beyond the pleasure of plugging in.
71
228572
4323
About this website

This site will introduce you to YouTube videos that are useful for learning English. You will see English lessons taught by top-notch teachers from around the world. Double-click on the English subtitles displayed on each video page to play the video from there. The subtitles scroll in sync with the video playback. If you have any comments or requests, please contact us using this contact form.

https://forms.gle/WvT1wiN1qDtmnspy7