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1
00:00:01,400 --> 00:00:02,900
DID YOU DO THIS?
I DIDN'T DO THAT.
2
00:00:02,901 --> 00:00:04,102
YOU REALIZE IT'S $400.
NO.
3
00:00:04,103 --> 00:00:05,705
DUDE, IT WASN'T ME.
COME IN. COME ON.
4
00:00:05,706 --> 00:00:09,975
YOU EVER TELL A LIE...
EVEN A LITTLE ONE?
5
00:00:09,976 --> 00:00:12,012
[ CELLPHONE CHIMES ]
6
00:00:14,646 --> 00:00:18,949
IS TECHNOLOGY MAKING IT EASIER
FOR US TO LIE?
7
00:00:18,950 --> 00:00:21,153
OR MAYBE NOTHING EVER CHANGES,
8
00:00:21,154 --> 00:00:25,156
AND DISHONESTY IS JUST
A TIMELESS PART OF HUMAN NATURE.
9
00:00:25,157 --> 00:00:26,191
DION.
OH.
10
00:00:26,192 --> 00:00:27,193
WHAT ARE YOU DOING?
WHO IS THAT?
11
00:00:27,194 --> 00:00:30,127
COULD SOCIETY FUNCTION
IN A WORLD
12
00:00:30,128 --> 00:00:32,130
WITHOUT LYING OR SECRETS?
13
00:00:32,131 --> 00:00:34,432
NO, I DO NOT
HAVE ANOTHER GIRLFRIEND.
14
00:00:34,433 --> 00:00:35,017
[ BUZZER ]
15
00:00:35,018 --> 00:00:35,600
MM.
16
00:00:35,601 --> 00:00:37,369
WELL,
YOU'RE A LIAR.
17
00:00:40,272 --> 00:00:43,841
DISHONESTY
MIGHT BE SO WIDESPREAD
18
00:00:43,842 --> 00:00:47,913
BECAUSE WE'RE SO EASILY FOOLED,
19
00:00:47,914 --> 00:00:51,582
AND OUR MEMORIES ARE FALLIBLE.
20
00:00:51,583 --> 00:00:55,487
CAN WE EVER SEE THE TRUE NATURE
OF REALITY?
21
00:00:57,457 --> 00:01:00,493
OR IS TRUTH JUST A LIE?
22
00:01:05,698 --> 00:01:09,669
SPACE, TIME, LIFE ITSELF.
23
00:01:12,604 --> 00:01:17,642
THE SECRETS OF THE COSMOS
LIE THROUGH THE WORMHOLE.
24
00:01:17,643 --> 00:01:20,644
Captions by VITAC
www.vitac.com
25
00:01:20,645 --> 00:01:23,683
CAPTIONS PAID FOR BY
DISCOVERY COMMUNICATIONS
26
00:01:28,086 --> 00:01:31,857
I'M GOING TO LET YOU IN
ON A LITTLE SECRET.
27
00:01:34,794 --> 00:01:38,963
I HAVE NEVER TOLD A LIE.
28
00:01:38,964 --> 00:01:46,037
NOT ONCE IN MY LONG CAREER
HAS AN UNTRUTH CROSSED MY LIPS,
29
00:01:46,038 --> 00:01:48,041
HONEST.
30
00:01:49,842 --> 00:01:51,609
[ CHUCKLES ]
31
00:01:51,610 --> 00:01:54,212
WE ALL AGREE
THAT LYING IS SHAMEFUL,
32
00:01:54,213 --> 00:01:59,751
YET WE STILL DELIBERATELY
DECEIVE EACH OTHER ALL THE TIME.
33
00:01:59,752 --> 00:02:05,889
PERHAPS WE LIE
BECAUSE WE JUST CAN'T HELP IT.
34
00:02:05,890 --> 00:02:08,693
WHEN DID YOU TELL
YOUR FIRST LIE?
35
00:02:08,694 --> 00:02:13,598
PERHAPS IT WAS SOON AFTER
YOU WERE FIRST LIED TO.
36
00:02:13,599 --> 00:02:16,035
I TOLD MY SON
IF HE DIDN'T EAT HIS BROCCOLI,
37
00:02:16,036 --> 00:02:19,871
HE WOULD BE UNDER 4 FEET
THE REST OF HIS LIFE.
38
00:02:19,872 --> 00:02:22,708
I TOLD MY SON HIS BLANKET
WOULD PROTECT HIM FROM MONSTERS
39
00:02:22,709 --> 00:02:24,141
IN THE CLOSET.
40
00:02:24,142 --> 00:02:26,944
I TOLD MY DAUGHTER IF SHE DIDN'T
KEEP HER ROOM CLEAN,
41
00:02:26,945 --> 00:02:30,882
SHE WOULD NEVER FIND A MAN
THAT WOULD WANT TO MARRY HER.
42
00:02:30,883 --> 00:02:33,384
Freeman: KANG LEE
IS A DEVELOPMENTAL PSYCHOLOGIST
43
00:02:33,385 --> 00:02:35,687
AT THE UNIVERSITY OF TORONTO.
44
00:02:35,688 --> 00:02:40,859
AS A FATHER, HE UNDERSTANDS
WHY WE LIE TO OUR KIDS.
45
00:02:40,860 --> 00:02:45,830
SOMETIMES, YOU HAVE EXHAUSTED
ALL THE OTHER BETTER METHODS,
46
00:02:45,831 --> 00:02:48,534
AND THE LYING
SOMETIMES BECOMES THE ONLY WAY
47
00:02:48,535 --> 00:02:51,336
YOU CAN DEAL
WITH THE SITUATION ON HAND.
48
00:02:51,337 --> 00:02:55,841
Freeman: IN FACT, KANG IS
AS GUILTY AS THE REST OF US.
49
00:02:55,842 --> 00:02:59,411
I USED TO DRIVE MY SON NATHAN
TO HIS SCHOOL EVERY MORNING.
50
00:02:59,412 --> 00:03:01,111
[ INDISTINCT SHOUTING ]
51
00:03:01,112 --> 00:03:03,413
AND SOMETIMES, IN THE BACKSEAT,
52
00:03:03,414 --> 00:03:05,984
AND HE WOULD BE ACTING UP
AND SCREAMING, YELLING,
53
00:03:05,985 --> 00:03:08,220
AND I POINTED
TO THE HAZARD LIGHT
54
00:03:08,221 --> 00:03:11,890
AND I SAID, "THAT ACTUALLY
IS AN EJECT BUTTON.
55
00:03:11,891 --> 00:03:14,491
IF I PUSH THAT BUTTON,
YOUR CAR SEAT
56
00:03:14,492 --> 00:03:17,462
IS GOING TO BLOW OFF
AND GO THROUGH THE ROOF,
57
00:03:17,463 --> 00:03:20,298
AND YOU'RE GOING TO FLY
OUT OF THE CAR."
58
00:03:20,299 --> 00:03:25,003
AND IMMEDIATELY,
HE BECAME VERY QUIET.
59
00:03:25,004 --> 00:03:27,106
Freeman: WOULD CHILDREN REMAIN
HONEST AND PURE
60
00:03:27,107 --> 00:03:32,210
IF WE GROWN UPS DIDN'T
CORRUPT THEM WITH OUR LIES?
61
00:03:32,211 --> 00:03:35,312
KANG BELIEVES
SOMETHING DEEPER IS GOING ON.
62
00:03:35,313 --> 00:03:37,681
HE AND HIS COLLEAGUES
HAVE RUN AN EXPERIMENT
63
00:03:37,682 --> 00:03:40,786
WITH THOUSANDS OF KIDS
OF VARIOUS AGES.
64
00:03:40,787 --> 00:03:43,621
[ BARKING ]
65
00:03:43,622 --> 00:03:46,890
WHAT DO YOU THINK
IT IS?
66
00:03:46,891 --> 00:03:48,225
A DOG.
A DOG.
67
00:03:48,226 --> 00:03:50,093
COME AROUND.
YES, IT IS A DOG.
68
00:03:50,094 --> 00:03:50,778
DOGGY.
69
00:03:50,779 --> 00:03:51,461
[ CHUCKLES ]
70
00:03:51,462 --> 00:03:53,899
IT STARTS AS A GAME...
71
00:03:53,900 --> 00:03:57,836
GUESS THE ANIMAL
FROM JUST THE SOUND IT MAKES.
72
00:03:57,837 --> 00:03:59,003
[ NEIGHING ]
73
00:03:59,004 --> 00:04:00,638
A HORSE?
YES.
74
00:04:00,639 --> 00:04:02,606
TURN AROUND.
TAKE A LOOK.
75
00:04:02,607 --> 00:04:04,374
YEAH.
76
00:04:04,375 --> 00:04:05,811
KIDS ARE PROMISED A PRIZE
77
00:04:05,812 --> 00:04:07,646
IF THEY CAN GUESS
THE THIRD ANIMAL CORRECTLY.
78
00:04:07,647 --> 00:04:08,713
TURN AROUND.
79
00:04:08,714 --> 00:04:10,715
THEN,
THE GROWN UPS LEAVE THE ROOM.
80
00:04:10,716 --> 00:04:11,784
AND I'M GONNA
PLAY THE SOUND...
81
00:04:11,785 --> 00:04:15,787
ALL RIGHT.
SO I'LL BE RIGHT BACK, OKAY?
82
00:04:15,788 --> 00:04:18,021
[ DOOR OPENS, CLOSES ]
83
00:04:18,022 --> 00:04:20,193
[ DOOR CLOSES ]
84
00:04:28,101 --> 00:04:30,336
YOU CAN GUESS
HOW WELL THAT WORKED.
85
00:04:30,337 --> 00:04:32,002
HIDDEN CAMERAS REVEALED
86
00:04:32,003 --> 00:04:35,706
THAT FOR MANY CHILDREN,
THE TEMPTATION WAS TOO GREAT.
87
00:04:35,707 --> 00:04:37,309
[ DOOR OPENS, CLOSES ]
88
00:04:37,310 --> 00:04:38,843
SORRY.
89
00:04:38,844 --> 00:04:40,478
YOU CAN
TURN AROUND NOW.
90
00:04:40,479 --> 00:04:41,646
WHEN I WAS GONE,
91
00:04:41,647 --> 00:04:44,214
DID YOU TURN AROUND TO PEEK
TO SEE WHAT IT IS?
92
00:04:44,215 --> 00:04:45,483
NO? OKAY.
93
00:04:45,484 --> 00:04:47,185
NOW, WHAT DO YOU
THINK IT IS?
94
00:04:47,186 --> 00:04:48,003
COW.
95
00:04:48,004 --> 00:04:48,819
IT'S A COW?
96
00:04:48,820 --> 00:04:52,223
IF THEY LATER IDENTIFIED THE
ANIMAL WITHOUT EVER HEARING IT,
97
00:04:52,224 --> 00:04:56,927
THE EXPERIMENTERS KNEW
THOSE CHILDREN LIED.
98
00:04:56,928 --> 00:04:58,728
Lee:
THAT'S BASICALLY THE PROCEDURE
99
00:04:58,729 --> 00:05:03,134
WE HAVE BEEN USING WITH KIDS
IN THE U.S., IN CANADA,
100
00:05:03,135 --> 00:05:06,504
IN CHINA, IN AFRICA.
101
00:05:06,505 --> 00:05:11,375
AND IT WORKS VERY, VERY WELL
WITH KIDS ALL OVER THE WORLD.
102
00:05:11,376 --> 00:05:12,877
Freeman:
RESEARCHERS USED TO BELIEVE
103
00:05:12,878 --> 00:05:16,113
THAT CHILDREN
START LYING AROUND AGE 5,
104
00:05:16,114 --> 00:05:19,416
AFTER MORE EXPOSURE
TO THE ADULT WORLD.
105
00:05:19,417 --> 00:05:22,821
BUT KANG HAS SHOWN
THAT LYING STARTS MUCH EARLIER.
106
00:05:22,822 --> 00:05:23,890
WHAT DO YOU THINK IT IS?
107
00:05:23,891 --> 00:05:24,956
COW.
108
00:05:24,957 --> 00:05:26,891
[ Laughing ]
IT'S A COW. OKAY.
109
00:05:26,892 --> 00:05:29,326
HOW DO YOU KNOW
IT'S A COW?
110
00:05:29,327 --> 00:05:32,730
KIDS ACTUALLY START TO TELL LIES
AT 2 YEARS OF AGE,
111
00:05:32,731 --> 00:05:34,833
SO THAT IS VERY SURPRISING.
112
00:05:34,834 --> 00:05:36,468
AT 2 YEARS OF AGE,
113
00:05:36,469 --> 00:05:39,769
ABOUT 30% OF KIDS
WOULD TELL LIES,
114
00:05:39,770 --> 00:05:41,939
AND AT 3 YEARS OF AGE,
115
00:05:41,940 --> 00:05:45,343
ABOUT 50% OF THE KIDS
WOULD TELL A LIE.
116
00:05:45,344 --> 00:05:49,913
BY 7 AND 8 YEARS OF AGE,
100% OF KIDS WILL LIE.
117
00:05:49,914 --> 00:05:51,915
DID YOU
TURN AROUND TO PEEK?
118
00:05:51,916 --> 00:05:53,550
NO.
119
00:05:53,551 --> 00:05:56,254
Freeman: KANG'S REVELATION IS
ENOUGH TO SEND WORRIED PARENTS
120
00:05:56,255 --> 00:05:57,721
INTO A TIZZY,
121
00:05:57,722 --> 00:06:02,026
EXCEPT THERE IS A BRIGHT SIDE
TO EARLY LYING.
122
00:06:02,027 --> 00:06:05,829
Lee: THOSE KIDS WHO LIE EARLIER
THAN THE OTHER KIDS
123
00:06:05,830 --> 00:06:07,132
ARE ACTUALLY THOSE KIDS
124
00:06:07,133 --> 00:06:10,668
WHO HAVE BETTER COGNITIVE
DEVELOPMENT ABILITIES.
125
00:06:10,669 --> 00:06:12,504
SO THEY SEEM TO BE MORE ADVANCED
126
00:06:12,505 --> 00:06:15,006
THAN THOSE KIDS
WHO ARE TELLING THE TRUTH,
127
00:06:15,007 --> 00:06:18,476
WHICH IS TOTALLY
SURPRISING TO US.
128
00:06:18,477 --> 00:06:22,814
Freeman: A GOOD LIE REQUIRES
FORETHOUGHT AND SELF CONTROL.
129
00:06:22,815 --> 00:06:26,718
Lee: YOU HAVE TO BE ABLE TO PLAN
AHEAD WHAT YOU ARE GOING TO SAY
130
00:06:26,719 --> 00:06:29,321
AND HOW YOU ARE GOING TO SAY IT.
131
00:06:29,322 --> 00:06:31,122
Freeman: IN OTHER WORDS,
THE ONSET OF LYING
132
00:06:31,123 --> 00:06:34,527
IS AN IMPORTANT STAGE
IN BRAIN DEVELOPMENT.
133
00:06:37,096 --> 00:06:41,232
BUT WHY DO WE START LYING AS
SOON AS OUR BRAINS ARE ABLE TO?
134
00:06:41,233 --> 00:06:45,170
WOULD WE BE BETTER OFF
ALWAYS TELLING THE TRUTH?
135
00:06:45,171 --> 00:06:48,506
Lee: SOME OF THEM ARE ACTUALLY
VERY GOOD... PROSOCIAL LIES.
136
00:06:48,507 --> 00:06:51,076
THE REASON
WE TELL WHITE LIES IS BECAUSE
137
00:06:51,077 --> 00:06:55,112
WE DO NOT WANT
TO HURT OTHER PEOPLE'S FEELINGS.
138
00:06:55,113 --> 00:06:58,548
IMAGINE I'M PLAYING CARDS
WITH MY FRIENDS.
139
00:06:58,549 --> 00:07:02,252
AT THE SAME TIME, I REALLY WANT
TO WATCH MY FAVORITE TV SHOW.
140
00:07:02,253 --> 00:07:03,420
WHAT DO I DO?
141
00:07:03,421 --> 00:07:06,490
ONE WAY I CAN DO IT
IS DO IT BLUNTLY.
142
00:07:06,491 --> 00:07:09,826
MY FAVORITE TV SHOW JUST CAME ON
AND, UH, SO I HAVE TO GO.
143
00:07:09,827 --> 00:07:11,930
UH, THANK...
THANK YOU, GUYS.
144
00:07:11,931 --> 00:07:13,932
BYE BYE.
145
00:07:13,933 --> 00:07:15,600
NOBODY'S GONNA LIKE YOU.
146
00:07:15,601 --> 00:07:18,269
OR YOU CAN DO IT DIFFERENTLY.
147
00:07:18,270 --> 00:07:21,439
YOU BASICALLY TELL A WHITE LIE
BY SAYING, "OH, YOU KNOW,
148
00:07:21,440 --> 00:07:23,509
I DON'T FEEL VERY GOOD.
I HAVE TO LIE DOWN."
149
00:07:23,510 --> 00:07:24,641
SORRY, GUYS.
150
00:07:24,642 --> 00:07:26,244
I SUDDENLY
DON'T FEEL VERY WELL.
151
00:07:26,245 --> 00:07:27,913
I PROBABLY HAVE TO GO IN
AND LIE DOWN.
152
00:07:27,914 --> 00:07:29,213
UH...
OH, DO YOU NEED WATER?
153
00:07:29,214 --> 00:07:31,817
SO YOU REALLY HAVE TO BE ABLE
TO KNOW WHEN IS THE TIME
154
00:07:31,818 --> 00:07:33,050
TO TELL THE TRUTH
155
00:07:33,051 --> 00:07:36,723
AND WHEN IS NOT A GOOD TIME
TO TELL THE TRUTH.
156
00:07:38,800 --> 00:07:43,135
A LITTLE WHITE LIE
DOESN'T HURT ANYONE.
157
00:07:43,136 --> 00:07:47,840
BUT SOME PEOPLE CAN'T STOP
TWISTING THE TRUTH, NO MATTER
158
00:07:47,841 --> 00:07:52,813
HOW DAMAGING THE CONSEQUENCES
TO OTHERS OR THEMSELVES.
159
00:07:52,814 --> 00:07:57,818
FOR THEM,
DISHONESTY IS A DISEASE.
160
00:07:57,819 --> 00:08:01,688
WHAT SEPARATES
THESE PATHOLOGICAL LIARS
161
00:08:01,689 --> 00:08:04,758
FROM THE REST OF US?
162
00:08:04,759 --> 00:08:07,828
CHARLES PONZI BEGAN LYING
TO HIS INVESTMENT CLIENTS
163
00:08:07,829 --> 00:08:11,397
IN THE EARLY 1900s,
AND HE COULDN'T STOP,
164
00:08:11,398 --> 00:08:16,102
EVEN AFTER HE'D BEEN TO PRISON
THREE TIMES FOR FRAUD.
165
00:08:16,103 --> 00:08:19,039
18th CENTURY JOURNALIST
DANIEL DEFOE
166
00:08:19,040 --> 00:08:22,042
INVENTED AS MANY FACTS
AS HE REPORTED
167
00:08:22,043 --> 00:08:24,945
AND DID TIME FOR SLANDER.
168
00:08:24,946 --> 00:08:29,849
WHAT DRIVES SOME LIARS TO REACH
PATHOLOGICAL LEVELS OF DECEIT?
169
00:08:29,850 --> 00:08:32,886
THAT'S WHAT YALING YANG,
A PSYCHOLOGIST
170
00:08:32,887 --> 00:08:36,857
AT CHILDREN'S HOSPITAL
LOS ANGELES, WANTS TO FIND OUT.
171
00:08:36,858 --> 00:08:40,961
WE START TO SPOT INCONSISTENCY
BETWEEN THEIR STATEMENT.
172
00:08:40,962 --> 00:08:44,865
EVEN WHEN THEY KNOW
THAT WE HAVE OTHER DATA,
173
00:08:44,866 --> 00:08:47,567
INCLUDING
OFFICIAL CRIMINAL RECORDS,
174
00:08:47,568 --> 00:08:50,236
THEY STILL LIE.
175
00:08:50,237 --> 00:08:51,538
Freeman:
YALING AND HER COLLEAGUES
176
00:08:51,539 --> 00:08:53,640
WONDERED IF THERE MIGHT BE
PHYSICAL DIFFERENCES
177
00:08:53,641 --> 00:08:56,144
BETWEEN THE BRAINS
OF PATHOLOGICAL LIARS
178
00:08:56,145 --> 00:08:59,078
AND THE BRAINS
OF AVERAGE PEOPLE.
179
00:08:59,079 --> 00:09:01,780
THE BRAIN STORES
OUR MEMORIES AND KNOWLEDGE
180
00:09:01,781 --> 00:09:03,884
IN GRAY MATTER CELLS,
181
00:09:03,885 --> 00:09:07,487
BUT ANOTHER TYPE OF NEURON,
THE WHITE MATTER CELL,
182
00:09:07,488 --> 00:09:12,092
CREATES CONNECTIONS
BETWEEN ALL THAT INFORMATION.
183
00:09:12,093 --> 00:09:15,962
WHENEVER WE TELL A STORY,
WHETHER IT'S TRUE OR NOT,
184
00:09:15,963 --> 00:09:18,432
WE HAVE TO GATHER DETAILS
FROM GRAY MATTER CELLS
185
00:09:18,433 --> 00:09:20,636
IN DIFFERENT PARTS OF THE BRAIN.
186
00:09:23,338 --> 00:09:27,707
IT'S LIKE GLEANING INFORMATION
FROM A SERIES OF BOOKS.
187
00:09:27,708 --> 00:09:30,312
THE BOOKS ARE THE GRAY MATTER,
FILLED WITH THE KNOWLEDGE
188
00:09:30,313 --> 00:09:33,914
THAT YOU NEED TO FIT TOGETHER
INTO A COMPELLING NARRATIVE.
189
00:09:33,915 --> 00:09:39,486
THE AISLES THAT LEAD FROM BOOK
TO BOOK ARE THE WHITE MATTER.
190
00:09:39,487 --> 00:09:43,591
IMAGINE GOING TO A BOOKSTORE
TO GET 10 DIFFERENT BOOKS
191
00:09:43,592 --> 00:09:45,293
THAT ARE SCATTERED
192
00:09:45,294 --> 00:09:48,794
ACROSS DIFFERENT AREAS
OF THE BOOKSTORE.
193
00:09:48,795 --> 00:09:53,165
HAVING MULTIPLE PATHWAYS
THAT LEAD YOU TO THE BOOKS
194
00:09:53,166 --> 00:09:58,071
WILL HELP YOU GET TO THE BOOKS
MORE EASILY AND QUICKLY.
195
00:09:58,072 --> 00:10:01,176
THE HUMAN BRAIN
WORKS IN A VERY SIMILAR FASHION.
196
00:10:01,177 --> 00:10:02,842
WHEN YOU HAVE MORE CONNECTIONS
197
00:10:02,843 --> 00:10:05,645
BETWEEN VARIOUS PARTS
OF THE BRAIN, THAT WILL MAKE IT
198
00:10:05,646 --> 00:10:09,916
EASIER FOR YOU TO RETRIEVE
IMPORTANT INFORMATION.
199
00:10:09,917 --> 00:10:11,885
Freeman:
FOR EXAMPLE, LET'S SAY A FRIEND
200
00:10:11,886 --> 00:10:16,023
ASKS YALING WHAT SHE
HAD FOR DINNER YESTERDAY.
201
00:10:16,024 --> 00:10:17,457
TO TELL THE TRUTH,
202
00:10:17,458 --> 00:10:20,861
SHE ONLY HAS TO GATHER
A FEW PIECES OF INFORMATION.
203
00:10:20,862 --> 00:10:24,063
SHE ATE SPAGHETTI
AND A SALAD AT HOME.
204
00:10:24,064 --> 00:10:26,199
BUT LYING IS HARDER.
205
00:10:26,200 --> 00:10:28,635
YALING WOULD HAVE TO
IGNORE THE TRUTH
206
00:10:28,636 --> 00:10:32,072
AND COOK UP A STORY
ABOUT A FIVE STAR RESTAURANT
207
00:10:32,073 --> 00:10:33,874
AND A SIX COURSE MEAL,
208
00:10:33,875 --> 00:10:37,645
A SPECIAL OCCASION
AND EXPENSIVE CHAMPAGNE.
209
00:10:37,646 --> 00:10:42,249
IF SHE HESITATES AT ANY POINT,
HER LIE WILL BE DISCOVERED.
210
00:10:42,250 --> 00:10:46,919
SHE NEEDS GOOD PATHWAYS SO SHE
CAN RACE FROM TOPIC TO TOPIC,
211
00:10:46,920 --> 00:10:49,557
GRABBING THE INFORMATION
SHE NEEDS.
212
00:10:54,628 --> 00:10:57,563
SINCE LYING REQUIRES
A LOT MORE INFORMATION GATHERING
213
00:10:57,564 --> 00:10:59,031
THAN TELLING THE TRUTH,
214
00:10:59,032 --> 00:11:02,102
YALING AND HER COLLEAGUES
CONJECTURED THAT THE BRAINS
215
00:11:02,103 --> 00:11:07,140
OF PATHOLOGICAL LIARS MIGHT HAVE
MORE WHITE MATTER PATHWAYS.
216
00:11:07,141 --> 00:11:10,478
BRAIN SCANS PROVED THEM RIGHT.
217
00:11:13,981 --> 00:11:19,019
LIARS HAVE ABOUT 25% INCREASE
IN WHITE MATTER
218
00:11:19,020 --> 00:11:22,222
COMPARED TO HEALTHY INDIVIDUALS.
219
00:11:22,223 --> 00:11:26,492
SO HAVING MORE WHITE MATTER
ALLOWS ALL THIS INFORMATION
220
00:11:26,493 --> 00:11:33,132
TO BE RETRIEVED AND BE USED
IN A MUCH FASTER WAY.
221
00:11:33,133 --> 00:11:36,069
Freeman: YALING ALSO FOUND
THAT PATHOLOGICAL LIARS
222
00:11:36,070 --> 00:11:40,940
HAVE 14% LESS GRAY MATTER
THAN AVERAGE PEOPLE.
223
00:11:40,941 --> 00:11:43,810
GRAY MATTER STORES OUR MEMORIES,
224
00:11:43,811 --> 00:11:46,712
BUT IT ALSO
HAS ANOTHER FUNCTION...
225
00:11:46,713 --> 00:11:50,451
IT CONTROLS
OUR RECKLESS IMPULSES.
226
00:11:50,452 --> 00:11:53,020
Yang: GRAY MATTER
PLAYS A VERY IMPORTANT ROLE
227
00:11:53,021 --> 00:11:55,356
IN IMPULSE CONTROL.
228
00:11:55,357 --> 00:11:58,826
SO THIS KIND OF REDUCTION
IN GRAY MATTER
229
00:11:58,827 --> 00:12:02,594
IS LIKELY TO CONTRIBUTE
TO THE LACK OF IMPULSE CONTROL
230
00:12:02,595 --> 00:12:05,732
IN PATHOLOGICAL LIARS.
231
00:12:05,733 --> 00:12:09,068
Freeman: PATHOLOGICAL LIARS
CAN EASILY RUIN THEIR OWN LIVES,
232
00:12:09,069 --> 00:12:10,971
AS WELL AS OTHERS'.
233
00:12:10,972 --> 00:12:14,509
PERHAPS NOW THAT WE KNOW MORE
ABOUT WHAT MAKES THEM LIE,
234
00:12:14,510 --> 00:12:18,111
WE CAN DEVELOP THERAPIES
TO HELP THEM STOP.
235
00:12:18,112 --> 00:12:19,813
Yang:
WITHOUT THAT INFORMATION,
236
00:12:19,814 --> 00:12:23,382
IT WILL BE VERY DIFFICULT
TO DEVELOP ANY KIND
237
00:12:23,383 --> 00:12:29,655
OF INTERVENTION OR TREATMENT
FOR THIS VERY DAMAGING BEHAVIOR.
238
00:12:29,656 --> 00:12:30,890
Freeman:
BUT ISN'T TECHNOLOGY
239
00:12:30,891 --> 00:12:34,428
MAKING IT EASIER
FOR US TO DECEIVE ONE ANOTHER?
240
00:12:34,429 --> 00:12:36,764
IS THERE A WAY
TO TELL WHAT'S TRUE
241
00:12:36,765 --> 00:12:40,634
AND WHAT'S NOT ONLINE?
242
00:12:40,635 --> 00:12:45,373
THIS INFORMATION SCIENTIST
HAS DEVELOPED A WAY TO FIND OUT.
243
00:12:49,000 --> 00:12:53,537
OUR MODERN DEVICES APPEAR
TO MAKE LYING EASIER THAN EVER.
244
00:12:53,538 --> 00:12:58,642
AFTER ALL, NO ONE CAN SEE US
BEHIND A SCREEN.
245
00:12:58,643 --> 00:13:03,314
TODAY'S TECHNOLOGY HAS
USHERED IN A NEW BREED OF LIE.
246
00:13:03,315 --> 00:13:08,453
IT'S CALLED DIGITAL DECEPTION.
247
00:13:08,454 --> 00:13:14,060
IS THE INFORMATION AGE
REALLY THE DISINFORMATION AGE?
248
00:13:15,226 --> 00:13:17,061
[ KEYPAD CLICKING ]
249
00:13:17,062 --> 00:13:21,099
INFORMATION SCIENTIST JEFF
HANCOCK AT CORNELL UNIVERSITY
250
00:13:21,100 --> 00:13:24,701
IS EXAMINING THE DIFFERENCES
BETWEEN HIGH TECH LIES
251
00:13:24,702 --> 00:13:27,805
AND THE OLD STANDBYS.
252
00:13:27,806 --> 00:13:30,608
IF I WANTED TO CALL IN SICK,
IN THE OLD DAYS,
253
00:13:30,609 --> 00:13:33,710
I'D NEED TO PSYCH MYSELF UP
AND GET MY SICK VOICE ON.
254
00:13:33,711 --> 00:13:36,214
[ TELEPHONE RINGS ]
255
00:13:36,215 --> 00:13:37,516
YEAH, HI.
[ COUGHS ]
256
00:13:37,517 --> 00:13:39,017
I'M REALLY SORRY.
[ COUGHS ]
257
00:13:39,018 --> 00:13:42,118
I'M...
I'M TOO SICK TO COME IN TODAY.
258
00:13:42,119 --> 00:13:45,723
YEAH. [ COUGHS ]
259
00:13:45,724 --> 00:13:49,094
NOWADAYS, WE CAN TYPE A MESSAGE
ABOUT FEELING SICK,
260
00:13:49,095 --> 00:13:52,998
NO VOICE, NO VOCAL CUES,
NO NONVERBAL CUES.
261
00:13:52,999 --> 00:13:57,301
HIT SEND, AND MY LIE'S DONE.
262
00:13:57,302 --> 00:14:00,271
Freeman: SOME DIGITAL DECEPTIONS
HAVE BECOME SO COMMON
263
00:14:00,272 --> 00:14:03,273
THAT JEFF AND HIS TEAM
GAVE THEM NAMES.
264
00:14:03,274 --> 00:14:04,975
Hancock: ONE OF THE THINGS
WE SAW ON TEXT MESSAGES
265
00:14:04,976 --> 00:14:06,911
ALL THE TIME WAS A LIE
WE CALL THE BUTLER LIE.
266
00:14:06,912 --> 00:14:08,947
[ DOORBELL RINGS ]
267
00:14:11,582 --> 00:14:15,253
WE USED TO HAVE PEOPLE
THAT WOULD ACT AS THAT BUFFER,
268
00:14:15,254 --> 00:14:17,589
AND THEY WOULD PROVIDE
THAT PHYSICAL BUFFER
269
00:14:17,590 --> 00:14:22,727
BETWEEN YOU AND THE WORLD TRYING
TO GET IN AND TALK TO YOU.
270
00:14:22,728 --> 00:14:24,628
[ CELLPHONE CHIMES ]
271
00:14:24,629 --> 00:14:27,732
Freeman: NOW WE ALL
HAVE DIGITAL BUTLERS.
272
00:14:27,733 --> 00:14:30,002
Hancock: PEOPLE SAY, "WELL,
I'M ON MY WAY," WHEN, IN FACT,
273
00:14:30,003 --> 00:14:33,470
THEY'RE NOT, OR, "MY BATTERY WAS
DEAD," BECAUSE WHAT WE REALIZED
274
00:14:33,471 --> 00:14:36,940
IS THEY'RE PROVIDING A BUFFER
BETWEEN THAT PERSON
275
00:14:36,941 --> 00:14:41,711
AND THE FACT THAT THE WORLD CAN
CONTACT THEM PRETTY MUCH 24/7.
276
00:14:41,712 --> 00:14:44,014
Freeman: EVEN THOUGH IT MAKES US
EASIER TO REACH,
277
00:14:44,015 --> 00:14:48,353
THE ONLINE WORLD ALSO
OFFERS UNPRECEDENTED ANONYMITY.
278
00:14:48,354 --> 00:14:52,357
A NEW IDENTITY
IS JUST A FEW KEYSTROKES AWAY.
279
00:14:52,358 --> 00:14:54,593
THIS LEADS
TO A DIGITAL DECEPTION
280
00:14:54,594 --> 00:14:57,262
KNOWN AS THE SOCK PUPPET LIE.
281
00:14:57,263 --> 00:14:59,699
Hancock: SOCK PUPPET
IS IDENTITY DECEPTION,
282
00:14:59,700 --> 00:15:01,364
WHERE YOU HAVE AN ALTER EGO
283
00:15:01,365 --> 00:15:02,868
THAT CAN SAY THINGS
ON YOUR BEHALF
284
00:15:02,869 --> 00:15:04,637
WITHOUT APPEARING LIKE YOU.
285
00:15:06,839 --> 00:15:08,707
YOU'RE NOT JEFF HANCOCK,
ARE YOU?
286
00:15:08,708 --> 00:15:10,041
NO.
NOT ME.
287
00:15:10,042 --> 00:15:11,743
PERFECT, BECAUSE I'VE GOT
THIS NEW BOOK COMING OUT,
288
00:15:11,744 --> 00:15:13,578
AND I REALLY
NEED A POSITIVE REVIEW.
289
00:15:13,579 --> 00:15:15,447
COULD YOU HELP ME OUT?
290
00:15:15,448 --> 00:15:17,147
YEAH.
GREAT, THANKS.
291
00:15:17,148 --> 00:15:19,484
Freeman: IT'S NO WONDER
WE HAVE A HARD TIME
292
00:15:19,485 --> 00:15:23,454
DECIDING WHAT TO BELIEVE
OF ALL THAT WE READ ONLINE.
293
00:15:23,455 --> 00:15:26,423
IS IT POSSIBLE
TO SORT TRUTH FROM LIE?
294
00:15:26,424 --> 00:15:29,259
THAT'S WHAT JEFF
DECIDED TO FIND OUT.
295
00:15:29,260 --> 00:15:30,961
HE STARTED
BY LOOKING AT SOMETHING
296
00:15:30,962 --> 00:15:32,763
WE'VE ALL WONDERED ABOUT...
297
00:15:32,764 --> 00:15:36,935
THOSE CONSUMER REVIEWS WE SEE
WHEN WE SHOP ONLINE.
298
00:15:36,936 --> 00:15:41,004
WHO WRITES THOSE,
AND CAN WE TRUST THEM?
299
00:15:41,005 --> 00:15:43,508
THE STAKES ARE HUGE.
300
00:15:43,509 --> 00:15:47,177
TOGETHER, WE SPEND
TRILLIONS OF DOLLARS WORLDWIDE
301
00:15:47,178 --> 00:15:52,182
ON ONLINE SALES EVERY YEAR.
302
00:15:52,183 --> 00:15:57,421
JEFF EXAMINED THE HOTEL REVIEWS
WE USE TO PLAN OUR VACATIONS.
303
00:15:57,422 --> 00:16:01,692
SHOULD WE REALLY BE RELYING
ON THE OPINIONS OF STRANGERS?
304
00:16:01,693 --> 00:16:03,661
WE HAD PEOPLE WRITE FAKE REVIEWS
FOR US,
305
00:16:03,662 --> 00:16:04,796
AND WE PAID FOR THEM.
306
00:16:04,797 --> 00:16:06,098
WE KNEW THEY WERE FAKE.
307
00:16:06,099 --> 00:16:08,233
WE COMPARED THEM TO ONES
THAT WERE REAL.
308
00:16:08,234 --> 00:16:09,767
SO WE TOOK THEM
FROM THE VERIFIED SITES,
309
00:16:09,768 --> 00:16:13,171
AND WE LOOKED AT LINGUISTIC
PATTERNS AND HOW THEY DIFFERED.
310
00:16:13,172 --> 00:16:15,006
Freeman:
IF HE'D ACTUALLY BEEN THERE,
311
00:16:15,007 --> 00:16:18,343
JEFF WOULD WRITE ABOUT THE HOTEL
IN A CERTAIN WAY.
312
00:16:18,344 --> 00:16:20,978
HE WOULD KNOW ABOUT EVERY DETAIL
OF THE ROOM.
313
00:16:20,979 --> 00:16:23,549
Hancock: A REAL REVIEWER
WILL HAVE A SENSE
314
00:16:23,550 --> 00:16:25,583
OF WHAT THE BEDS ARE LIKE
AND THE BATHROOM.
315
00:16:25,584 --> 00:16:28,017
IS IT CLEAN,
IS THE SHOWER SMALL OR NOT?
316
00:16:28,018 --> 00:16:31,522
THAT SORT OF THING, SINCE
THEY'VE EXPERIENCED THE SPACE,
317
00:16:31,523 --> 00:16:33,425
THEIR BODIES MOVED THROUGH IT.
318
00:16:33,426 --> 00:16:36,960
Freeman: BUT IF JEFF
HAD NEVER BEEN TO THE HOTEL...
319
00:16:36,961 --> 00:16:39,696
HE WOULDN'T KNOW
IF THERE WAS MOLD IN THE SHOWER
320
00:16:39,697 --> 00:16:42,734
OR IF THE INTERNET SERVICE
WAS SLOW.
321
00:16:42,735 --> 00:16:45,269
SO HE'D HAVE TO WRITE
ABOUT SOMETHING ELSE,
322
00:16:45,270 --> 00:16:47,739
SOMETHING MADE UP.
323
00:16:47,740 --> 00:16:51,108
Hancock:
NOW, ME WRITING A FAKE REVIEW
HERE IN MY HOME WITH MY COMPUTER
324
00:16:51,109 --> 00:16:53,009
IS COMPLETELY DIFFERENT.
325
00:16:53,010 --> 00:16:54,812
WHEN A FAKE REVIEWER
HAS TO WRITE ABOUT SOMETHING,
326
00:16:54,813 --> 00:16:56,480
THEY'RE GOING INTO STORYTELLING.
327
00:16:56,481 --> 00:16:58,548
WE WERE ON BUSINESS.
328
00:16:58,549 --> 00:17:01,453
SO THEY'LL TELL STORIES
ABOUT WHO THEY WERE WITH,
329
00:17:01,454 --> 00:17:02,787
WHAT THEY WERE
SUPPOSED TO BE DOING.
330
00:17:02,788 --> 00:17:04,721
THEY'RE TRYING
TO CONVINCE PEOPLE.
331
00:17:04,722 --> 00:17:06,958
Freeman: JEFF AND HIS TEAM
COMPARED THE FAKE REVIEWS
332
00:17:06,959 --> 00:17:10,894
THEY HAD PAID FOR
WITH THE VERIFIED TRUTHFUL ONES.
333
00:17:10,895 --> 00:17:13,931
THEN, THEY DEVELOPED
A TRUTH OR LIE ALGORITHM
334
00:17:13,932 --> 00:17:18,435
THAT ZEROES IN ON TELLTALE WORDS
AND PHRASES.
335
00:17:18,436 --> 00:17:20,604
Hancock:
SEE HERE THAT ONES THAT ARE TRUE
336
00:17:20,605 --> 00:17:23,473
ARE THINGS LIKE,
"ROOMS WERE LARGE,"
337
00:17:23,474 --> 00:17:27,044
AND, "THEY WERE MORE EXPENSIVE,"
WHEREAS,
338
00:17:27,045 --> 00:17:28,546
OVER ON THE DECEPTIVE ONE,
339
00:17:28,547 --> 00:17:30,713
WE CAN SEE PEOPLE
TALKING ABOUT THEMSELVES.
340
00:17:30,714 --> 00:17:32,083
"I HAD A RESERVATION."
341
00:17:32,084 --> 00:17:33,851
LOT OF INSTANCES OF "I."
342
00:17:33,852 --> 00:17:35,454
Freeman:
JEFF HAS DEVELOPED
343
00:17:35,455 --> 00:17:39,123
KEYWORD ALGORITHMS
FOR OTHER PRODUCTS AND SERVICES
344
00:17:39,124 --> 00:17:42,727
AND DISCOVERED
SOME SURPRISING RESULTS.
345
00:17:42,728 --> 00:17:45,028
PEOPLE TEND TO THINK
MOST REVIEWS ARE FAKE,
346
00:17:45,029 --> 00:17:47,164
AND OUR ESTIMATION IS
THAT IT'S MUCH LOWER THAN THAT.
347
00:17:47,165 --> 00:17:50,101
LIKE,
MAYBE 5% TO 10% ARE FAKE.
348
00:17:50,102 --> 00:17:53,871
Freeman: SO ONLINE REVIEWS
ARE PRETTY RELIABLE.
349
00:17:53,872 --> 00:17:57,042
WHAT ABOUT DIGITAL
COMMUNICATIONS IN GENERAL?
350
00:17:57,043 --> 00:18:00,077
DO WE USE OUR GADGETS
TO LIE MORE OR LESS
351
00:18:00,078 --> 00:18:03,114
THAN IN OLD FASHIONED
FACE TO FACE TALKS?
352
00:18:03,115 --> 00:18:04,515
THINGS LIKE E MAIL,
353
00:18:04,516 --> 00:18:07,485
THERE'S ACTUALLY A LOT
LESS LYING THAN PEOPLE EXPECT.
354
00:18:07,486 --> 00:18:10,121
THE MAIN REASON, I THINK,
IS THAT THERE'S A RECORD.
355
00:18:10,122 --> 00:18:14,459
WE EVOLVED TO TALK
AND HAVE IT DISAPPEAR,
356
00:18:14,460 --> 00:18:17,694
AND NOW
WE'RE IN A RADICALLY NEW ERA.
357
00:18:17,695 --> 00:18:19,130
IF I WRITE YOU AN E MAIL,
358
00:18:19,131 --> 00:18:21,364
NOT ONLY HAVE I CREATED
A RECORD FOR MYSELF,
359
00:18:21,365 --> 00:18:23,433
I'VE GIVEN YOU A RECORD.
360
00:18:23,434 --> 00:18:25,102
THAT RECORD CAN BE COPIED.
361
00:18:25,103 --> 00:18:27,304
IT CAN BE SEARCHED.
IT CAN BE SHARED.
362
00:18:27,305 --> 00:18:30,042
AND SO TELLING A LIE
IN A DIGITAL FORMAT
363
00:18:30,043 --> 00:18:34,045
COMES WITH SUBSTANTIAL RISKS
THAT WE'VE NEVER,
364
00:18:34,046 --> 00:18:38,315
AS A SET OF COMMUNICATORS,
EVER HAD TO WORRY ABOUT BEFORE.
365
00:18:38,316 --> 00:18:41,251
Freeman: JEFF FOUND
A LITTLE MORE LYING IN TEXTING,
366
00:18:41,252 --> 00:18:44,921
WHICH WE USE FOR MORE INFORMAL
COMMUNICATION THAN E MAIL.
367
00:18:44,922 --> 00:18:48,325
AND AS SOON
AS THE WRITTEN WORDS DISAPPEAR,
368
00:18:48,326 --> 00:18:51,162
MORE LIES REAPPEAR.
369
00:18:51,163 --> 00:18:53,331
WHAT WE FIND IS THAT
IT'S THE PHONE
370
00:18:53,332 --> 00:18:54,898
WHERE PEOPLE LIE A LOT.
371
00:18:54,899 --> 00:18:56,267
THAT'S... EVERY STUDY,
372
00:18:56,268 --> 00:18:59,103
IT'S ALWAYS ON THE PHONE
WHERE YOU SEE THE MOST LIES.
373
00:18:59,104 --> 00:19:00,938
Freeman:
ACCORDING TO JEFF,
374
00:19:00,939 --> 00:19:04,675
WE LIE THE MOST WHEN WE DITCH
OUR GADGETS ALTOGETHER
375
00:19:04,676 --> 00:19:07,444
AND TALK TO EACH OTHER
FACE TO FACE.
376
00:19:07,445 --> 00:19:08,845
WHY?
377
00:19:08,846 --> 00:19:14,152
PERHAPS BECAUSE WE ARE
REALLY BAD AT SPOTTING LIES.
378
00:19:14,153 --> 00:19:18,958
BUT A NEW DEVICE MAY HELP US
CATCH A LIAR EVERY TIME.
379
00:19:21,000 --> 00:19:23,568
THINK YOU CAN SPOT A LIAR?
380
00:19:23,569 --> 00:19:26,372
OH, YOU MAY LOOK
FOR CERTAIN TELLS,
381
00:19:26,373 --> 00:19:32,879
FACIAL EXPRESSION, UNUSUAL TONE
OF VOICE, AWKWARD BODY LANGUAGE.
382
00:19:32,880 --> 00:19:35,716
BUT LET'S NOT KID OURSELVES,
FOLKS.
383
00:19:35,717 --> 00:19:39,686
IT CAN BE HARD TO TELL
IF SOMEONE IS LYING.
384
00:19:39,687 --> 00:19:43,256
COULD TECHNOLOGY RESTORE TRUTH
TO THE EXPRESSION,
385
00:19:43,257 --> 00:19:46,161
"THE EYES
ARE THE WINDOW TO THE SOUL"?
386
00:19:51,364 --> 00:19:54,933
THIS UNIVERSITY OF UTAH STUDENT
IS LOOKING TO SWIPE SOME MONEY
387
00:19:54,934 --> 00:19:58,138
FROM A CAMPUS OFFICE.
388
00:19:58,139 --> 00:20:01,307
AND HE JUST FOUND HIS CHANCE.
389
00:20:01,308 --> 00:20:03,375
HE'S NOT WORRIED
ABOUT THROWING AWAY HIS FUTURE
390
00:20:03,376 --> 00:20:05,245
FOR A MEASLY 20 BUCKS...
391
00:20:07,047 --> 00:20:10,616
...BECAUSE IT'S ALL PART OF A
"MISSION: IMPOSSIBLE" EXPERIMENT
392
00:20:10,617 --> 00:20:15,189
DREAMED UP BY
PSYCHOPHYSIOLOGIST JOHN KIRCHER.
393
00:20:15,190 --> 00:20:19,226
JOHN HAS SPENT THE LAST 30 YEARS
STUDYING LIES,
394
00:20:19,227 --> 00:20:22,594
AND THIS EXPERIMENT
IS DESIGNED TO TEST A DEVICE
395
00:20:22,595 --> 00:20:26,900
THAT MAY ONE DAY
MAKE LYING IMPOSSIBLE.
396
00:20:26,901 --> 00:20:30,303
TODAY,
THERE ARE TWO TEST SUBJECTS.
397
00:20:30,304 --> 00:20:32,038
JOHN DOESN'T KNOW IF ONE,
398
00:20:32,039 --> 00:20:36,543
BOTH, OR NEITHER OF THEM
WILL STEAL ANY MONEY.
399
00:20:36,544 --> 00:20:40,012
THE SUBJECT RECEIVES
SECRET AGENT STYLE INSTRUCTIONS,
400
00:20:40,013 --> 00:20:41,613
A MYSTERIOUS ENVELOPE,
401
00:20:41,614 --> 00:20:45,285
AND DIRECTIONS
FROM A COMPUTERIZED VOICE.
402
00:20:45,286 --> 00:20:48,654
YOU ARE AN INNOCENT PARTICIPANT
IN THIS EXPERIMENT.
403
00:20:48,655 --> 00:20:51,524
PLEASE WAIT OUTSIDE
THE BUILDING FOR 20 MINUTES
404
00:20:51,525 --> 00:20:55,260
BEFORE RETURNING TO THE LAB.
405
00:20:55,261 --> 00:21:00,766
THE OTHER STUDENT RECEIVES
A DIABOLICAL ASSIGNMENT.
406
00:21:00,767 --> 00:21:03,736
YOU MUST STEAL $20
FROM THE PURSE.
407
00:21:03,737 --> 00:21:06,006
YOU MUST HAVE
AN ALIBI PREPARED.
408
00:21:06,007 --> 00:21:09,574
YOU WILL NOT RECEIVE
FULL CREDIT IF YOU ARE CAUGHT.
409
00:21:09,575 --> 00:21:13,947
THEY GET INSTRUCTIONS
TO GO TO A DIFFERENT BUILDING,
410
00:21:13,948 --> 00:21:16,349
TO GO TO A SECRETARY'S OFFICE
411
00:21:16,350 --> 00:21:19,952
AND ASK HER
WHERE DR. MITCHELL'S OFFICE IS,
412
00:21:19,953 --> 00:21:23,622
AND SHE'LL REPLY
THAT THERE'S NO DR. MITCHELL
413
00:21:23,623 --> 00:21:27,693
OR THAT THEY SHOULD
CHECK WITH THE DEAN'S OFFICE.
414
00:21:27,694 --> 00:21:30,563
Freeman: THE SECRETARY
IS IN ON THE CAPER.
415
00:21:30,564 --> 00:21:33,466
SHE'S BEEN INSTRUCTED
TO LEAVE HER OFFICE UNATTENDED
416
00:21:33,467 --> 00:21:34,535
FOR A FEW MINUTES
417
00:21:34,536 --> 00:21:38,872
AFTER THE STUDENT
ASKS FOR DR. MITCHELL.
418
00:21:38,873 --> 00:21:41,474
Kircher: WE TRIED TO SET THIS UP
LIKE A "MISSION: IMPOSSIBLE"
419
00:21:41,475 --> 00:21:44,544
SCENARIO
TO GET THE SUBJECT ENGAGED
420
00:21:44,545 --> 00:21:47,747
AND APPREHENSIVE
ABOUT WHAT THEY'RE DOING.
421
00:21:47,748 --> 00:21:51,418
THOSE EFFECTS REPRODUCE
THE KINDS OF THINGS THAT WE SEE
422
00:21:51,419 --> 00:21:56,055
IN FIELD SITUATIONS
WITH ACTUAL CRIMINAL SUSPECTS.
423
00:21:56,056 --> 00:21:58,491
TAKE A SEAT
RIGHT OVER HERE.
424
00:21:58,492 --> 00:22:01,827
Freeman: NOW FOR THE MOMENT
OF TRUTH OR LIES.
425
00:22:01,828 --> 00:22:05,798
THE OCULAR DECEPTION TEST
BEGINS.
426
00:22:05,799 --> 00:22:07,167
THE SUBJECTS ANSWER
427
00:22:07,168 --> 00:22:10,602
IDENTICAL TRUE OR FALSE
QUESTIONS ABOUT GENERAL TOPICS
428
00:22:10,603 --> 00:22:13,539
AND ABOUT THE CRIME.
429
00:22:13,540 --> 00:22:16,776
BELOW THE SCREEN
IS JOHN'S DEVICE...
430
00:22:16,777 --> 00:22:21,179
AN INFRARED EYE TRACKER ABLE
TO SPOT MICROSCOPIC DILATIONS
431
00:22:21,180 --> 00:22:24,284
AND CONTRACTIONS OF THE PUPILS.
432
00:22:24,285 --> 00:22:28,420
THE CHANGES THAT WE'RE SEEING
IN THE SIZE OF THE PUPIL
433
00:22:28,421 --> 00:22:29,689
ARE VERY TINY.
434
00:22:29,690 --> 00:22:32,491
THEY'RE LESS THAN
1/10 OF A MILLIMETER,
435
00:22:32,492 --> 00:22:36,897
BUT WITH A COMPUTER,
WE CAN GET A CLEAR INDICATION
436
00:22:36,898 --> 00:22:40,201
THAT THE PUPIL IS DILATING
WHEN A PERSON IS DECEPTIVE.
437
00:22:45,838 --> 00:22:48,941
THE SUBJECT LOOKS LIKE THEY
DIDN'T HAVE A DIFFICULT TIME
438
00:22:48,942 --> 00:22:50,243
ANSWERING THESE QUESTIONS,
439
00:22:50,244 --> 00:22:51,744
AND THE PUPIL DATA
440
00:22:51,745 --> 00:22:56,181
LOOK LIKE WE WOULD EXPECT
FROM A TRUTHFUL INDIVIDUAL.
441
00:22:56,182 --> 00:22:58,083
Freeman:
DID THE THIEF'S PUPILS DILATE
442
00:22:58,084 --> 00:23:00,755
WHEN ANSWERING
THE SAME QUESTIONS?
443
00:23:05,058 --> 00:23:07,360
Kircher: THEY'RE SHOWING
STRONGER REACTIONS
444
00:23:07,361 --> 00:23:09,762
TO THE QUESTIONS ABOUT THE $20,
445
00:23:09,763 --> 00:23:13,401
SO I'D SAY THERE'S A GOOD CHANCE
THE SUBJECT'S IN A GUILTY GROUP.
446
00:23:19,407 --> 00:23:22,108
Freeman:
SURE ENOUGH, JOHN IS RIGHT.
447
00:23:22,109 --> 00:23:24,078
THE FEMALE SUBJECT WAS INNOCENT
448
00:23:24,079 --> 00:23:27,047
AND THE MALE SUBJECT
HAD TO GIVE BACK THE 20 BUCKS.
449
00:23:28,582 --> 00:23:34,253
BUT HOW DID PUPIL DILATION
HELP JOHN CATCH THE THIEF?
450
00:23:34,254 --> 00:23:36,156
JOHN KNOWS THAT WHEN OUR BRAINS
451
00:23:36,157 --> 00:23:38,525
GO INTO OVERDRIVE
WITH MENTAL EFFORT,
452
00:23:38,526 --> 00:23:41,361
OUR PUPILS DILATE INVOLUNTARILY.
453
00:23:41,362 --> 00:23:43,196
AND SINCE DECEPTION
454
00:23:43,197 --> 00:23:45,898
IS MORE COMPLICATED
THAN TELLING THE TRUTH,
455
00:23:45,899 --> 00:23:49,102
THE MALE STUDENT'S BRAIN
HAD TO WORK HARDER.
456
00:23:49,103 --> 00:23:52,738
HE COULDN'T HIDE HIS LYING EYES.
457
00:23:52,739 --> 00:23:57,977
JOHN'S OCULAR DECEPTION DEVICE
IS ALREADY 85% ACCURATE.
458
00:23:57,978 --> 00:24:01,013
THAT'S AS GOOD
AS THE BEST POLYGRAPH RESULTS.
459
00:24:01,014 --> 00:24:04,885
BUT WHILE PEOPLE CAN BE TRAINED
TO BEAT POLYGRAPH TESTS,
460
00:24:04,886 --> 00:24:08,354
PUPIL DILATION IS INVOLUNTARY.
461
00:24:08,355 --> 00:24:10,789
AND AS TECHNOLOGY IMPROVES,
462
00:24:10,790 --> 00:24:14,393
THE ACCURACY OF JOHN'S
LIE DETECTOR WILL, TOO.
463
00:24:14,394 --> 00:24:16,629
Kircher: WITH BETTER
EYE TRACKING TECHNOLOGY,
464
00:24:16,630 --> 00:24:20,401
WE'LL GET BETTER MEASURES
OF PUPIL CHANGE.
465
00:24:22,669 --> 00:24:25,103
Freeman: THAT MEANS THE ACCURACY
OF JOHN'S DEVICE
466
00:24:25,104 --> 00:24:28,675
COULD ONE DAY REACH 100%.
467
00:24:28,676 --> 00:24:31,677
IMAGINE A FUTURE
WHERE A PERSON WITH A CELLPHONE
468
00:24:31,678 --> 00:24:35,281
OR SMART EYEWEAR
COULD USE A MINIATURIZED VERSION
469
00:24:35,282 --> 00:24:38,785
OF JOHN'S DEVICE
ON ANYONE THEY'RE TALKING TO...
470
00:24:38,786 --> 00:24:42,488
HUSBAND AND WIFE,
PARENT AND CHILD,
471
00:24:42,489 --> 00:24:44,524
WORKER AND BOSS.
472
00:24:44,525 --> 00:24:46,659
WOULD THE WHOLE TRUTH
AND NOTHING BUT THE TRUTH
473
00:24:46,660 --> 00:24:51,564
BRING US CLOSER TOGETHER
OR TEAR US APART?
474
00:24:51,565 --> 00:24:53,999
ACCORDING TO
THIS COGNITIVE SCIENTIST,
475
00:24:54,000 --> 00:24:56,335
KNOWING THE REAL TRUTH
ABOUT THE WORLD AROUND US
476
00:24:56,336 --> 00:24:59,139
WOULD SIMPLY BLOW OUR MINDS.
477
00:24:59,140 --> 00:25:04,075
WHAT WE THINK OF AS REALITY
IS JUST A SERIES OF ILLUSIONS.
478
00:25:04,076 --> 00:25:08,281
WHY ARE OUR BRAINS
AND SENSES SO EASILY FOOLED?
479
00:25:08,282 --> 00:25:09,449
WOW.
480
00:25:12,000 --> 00:25:15,368
WE RELY ON OUR SENSES
TO MAKE SENSE OF OUR WORLD.
481
00:25:15,369 --> 00:25:18,538
THAT'S WHY IT'S SO UNSETTLING
WHEN THEY FAIL US.
482
00:25:18,539 --> 00:25:22,375
WE CAN'T TRUST OUR ABILITY
TO SEE THE TRUTH.
483
00:25:22,376 --> 00:25:24,310
AND EVEN IF WE COULD...
484
00:25:24,311 --> 00:25:25,979
[ TELEPHONE RINGS ]
485
00:25:25,980 --> 00:25:27,847
...COULD WE HANDLE IT?
486
00:25:27,848 --> 00:25:30,151
HELLO?
487
00:25:30,152 --> 00:25:33,320
HELLO?
488
00:25:33,321 --> 00:25:35,055
HELLO?
489
00:25:35,056 --> 00:25:39,559
I'M DON HOFFMAN...
AS FAR AS I CAN TELL.
490
00:25:39,560 --> 00:25:42,997
Freeman: UC IRVINE
COGNITIVE SCIENTIST DON HOFFMAN
491
00:25:42,998 --> 00:25:45,965
THINKS THAT ANYONE
WHO BELIEVES OUR SENSES
492
00:25:45,966 --> 00:25:50,304
ARE DESIGNED TO SHOW WHAT'S
THE TRUTH HAS GOT IT ALL WRONG.
493
00:25:50,305 --> 00:25:52,606
HE ENJOYS PROVING HIS POINT
494
00:25:52,607 --> 00:25:56,375
BY FINDING NEW WAYS
TO FOOL THE SENSES.
495
00:25:56,376 --> 00:25:58,511
I'M ABOUT TO EAT
THIS VERY TART LEMON,
496
00:25:58,512 --> 00:26:00,948
WHICH NORMALLY DOESN'T SOUND
LIKE A GOOD IDEA,
497
00:26:00,949 --> 00:26:05,952
BUT BEFORE I DO, I'M GOING
TO FIRST EAT THIS MIRACLE BERRY
498
00:26:05,953 --> 00:26:07,955
FROM WEST AFRICA.
499
00:26:10,024 --> 00:26:12,626
IT RELEASES SOMETHING
CALLED MIRACULIN,
500
00:26:12,627 --> 00:26:15,761
A CHEMICAL THAT BINDS TO THE
SWEET RECEPTORS ON MY TONGUE.
501
00:26:15,762 --> 00:26:19,366
AND WHAT IT'S SUPPOSED TO DO IS,
WHEN THE ACID FROM THE LEMON
502
00:26:19,367 --> 00:26:22,603
BINDS TO THE MIRACULIN,
IT TRIGGERS MY SWEET RECEPTORS
503
00:26:22,604 --> 00:26:24,904
TO GIVE ME AN ILLUSION
OF A SWEET TASTE.
504
00:26:24,905 --> 00:26:26,573
LET'S SEE IT REALLY WORKS.
505
00:26:26,574 --> 00:26:30,645
SO I'LL TAKE THE BERRY OUT,
AND WE'LL CUT THIS LEMON.
506
00:26:34,115 --> 00:26:36,117
AND THE MOMENT OF TRUTH.
507
00:26:38,986 --> 00:26:40,921
WOW.
508
00:26:40,922 --> 00:26:42,722
THAT DOES TASTE SWEET.
509
00:26:42,723 --> 00:26:44,391
I'VE NEVER TASTED A LEMON
LIKE THAT BEFORE.
510
00:26:44,392 --> 00:26:46,161
THAT IS REALLY GOOD.
[ CHUCKLES ]
511
00:26:49,597 --> 00:26:51,932
Freeman: DON HAS IDENTIFIED
PLENTY OF WAYS OUR SENSES
512
00:26:51,933 --> 00:26:56,037
AND BRAINS
MISCONSTRUE THE WORLD AROUND US.
513
00:26:56,038 --> 00:27:01,375
SURELY, WE THINK, OUR SENSE
OF TOUCH COULD NEVER BE WRONG.
514
00:27:01,376 --> 00:27:05,145
WITH TOUCH, WE FEEL LIKE WE'RE
IN DIRECT CONTACT WITH REALITY
515
00:27:05,146 --> 00:27:06,512
AS IT REALLY IS.
516
00:27:06,513 --> 00:27:11,183
WELL, IF YOU TAP THE SHOULDER
AND THEN TAP THE ELBOW
517
00:27:11,184 --> 00:27:13,386
AND THEN TAP THE WRIST AND YOU
DO THE TIMING JUST RIGHT,
518
00:27:13,387 --> 00:27:15,455
WHAT A PERSON WILL FEEL
IS TAPPING BETWEEN.
519
00:27:15,456 --> 00:27:18,693
SO YOU FEEL A TAP HERE AND A TAP
HERE, TAP THERE, A TAP THERE.
520
00:27:18,694 --> 00:27:22,362
AND IT'LL FEEL LIKE THERE'S SOME
ANIMAL RUNNING DOWN YOUR ARM.
521
00:27:22,363 --> 00:27:25,166
THE BRAIN IS SAYING,
"WHAT IS THE BEST STORY
522
00:27:25,167 --> 00:27:27,000
ABOUT THE WORLD
THAT I COULD COME UP WITH?"
523
00:27:27,001 --> 00:27:28,969
AND THE BEST STORY
THAT IT COMES UP WITH IS, "WELL,
524
00:27:28,970 --> 00:27:31,838
THERE'S PROBABLY SOMETHING
CRAWLING DOWN MY ARM."
525
00:27:31,839 --> 00:27:33,539
Freeman:
WITH SUCH LIMITED SENSES,
526
00:27:33,540 --> 00:27:35,508
THE UNFILTERED TRUTH
OF THE WORLD
527
00:27:35,509 --> 00:27:39,846
NEVER REACHES OUR BRAINS,
SO WE'RE FORCED TO USE STORIES
528
00:27:39,847 --> 00:27:44,416
OR PRECONCEIVED RULES
ABOUT HOW REALITY SHOULD BE.
529
00:27:44,417 --> 00:27:47,687
BUT ONCE YOU'RE CONSTRUCTING
REALITY BASED ON RULES,
530
00:27:47,688 --> 00:27:50,458
IF SOMETHING
DOESN'T MATCH YOUR ASSUMPTIONS,
531
00:27:50,459 --> 00:27:53,427
WE CONSTRUCT THINGS
THAT AREN'T REALLY THERE.
532
00:27:53,428 --> 00:27:57,964
Freeman: EACH OF OUR EYES
CAN ONLY TAKE IN A 2 D IMAGE.
533
00:27:57,965 --> 00:28:02,336
IT'S OUR BRAINS THAT CREATE
A 3 D VIEW OF THE WORLD.
534
00:28:02,337 --> 00:28:04,037
THERE'S GRADIENTS AND SHADING,
535
00:28:04,038 --> 00:28:07,473
SO AS YOU GO FROM LIGHT
TO DARK AND DARK TO LIGHT,
536
00:28:07,474 --> 00:28:09,375
THE VISUAL SYSTEM
AUTOMATICALLY INTERPRETS THAT
537
00:28:09,376 --> 00:28:12,045
IN TERMS
OF THREE DIMENSIONAL SHAPES.
538
00:28:12,046 --> 00:28:13,782
AS YOU SEE THINGS
LIKE RAILROAD TRACKS
539
00:28:13,783 --> 00:28:15,115
CONVERGING IN THE DISTANCE,
540
00:28:15,116 --> 00:28:17,953
YOU'LL ACTUALLY GIVE
A DEPTH INTERPRETATION TO THAT.
541
00:28:18,752 --> 00:28:20,654
AH!
542
00:28:20,655 --> 00:28:23,856
Freeman: DON'S RADICAL
CONCLUSION IS THAT OUR SENSES
543
00:28:23,857 --> 00:28:26,227
AREN'T INTENDED
TO SEE THE TRUTH OF REALITY.
544
00:28:26,228 --> 00:28:31,530
OUR SENSES DO JUST ENOUGH TO
HELP US FIND MATES, FIND FOOD,
545
00:28:31,531 --> 00:28:35,568
AND AVOID BECOMING
SOMEONE ELSE'S FOOD.
546
00:28:35,569 --> 00:28:37,136
Hoffman:
IT'S THE PERCEPTUAL SYSTEMS
547
00:28:37,137 --> 00:28:40,673
THAT ALLOW YOU TO STAY ALIVE
LONG ENOUGH TO REPRODUCE.
548
00:28:40,674 --> 00:28:42,710
THOSE ARE THE ONES
WHOSE GENES GET PASSED ON
549
00:28:42,711 --> 00:28:43,777
TO THE NEXT GENERATION.
550
00:28:43,778 --> 00:28:45,947
SO, IN THAT SENSE,
IT'S QUITE CLEAR.
551
00:28:45,948 --> 00:28:47,914
PERCEPTION
AND EVOLUTION OF PERCEPTION
552
00:28:47,915 --> 00:28:51,818
IS ABOUT HAVING KIDS,
NOT ABOUT THE TRUTH.
553
00:28:51,819 --> 00:28:54,587
Freeman: EVERY CREATURE ON EARTH
DEVELOPS ONLY THE SENSES
554
00:28:54,588 --> 00:28:58,625
IT NEEDS TO SURVIVE
AND REPRODUCE.
555
00:28:58,626 --> 00:29:01,228
THIS REGION USED TO BE
A MUCH BIGGER WETLAND
556
00:29:01,229 --> 00:29:03,763
WITH MILLIONS OF FROGS.
557
00:29:03,764 --> 00:29:07,334
Freeman:
THIS IS HOW RESEARCHERS BELIEVE
THE WORLD LOOKS TO A FROG.
558
00:29:07,335 --> 00:29:08,702
IF THINGS AREN'T MOVING,
559
00:29:08,703 --> 00:29:10,637
THE FROG PRETTY MUCH
EITHER DOESN'T SEE THEM
560
00:29:10,638 --> 00:29:13,272
OR IS PROGRAMMED TO IGNORE THEM.
561
00:29:13,273 --> 00:29:17,210
Freeman:
LUCKILY FOR THE FROG, IT'S GREAT
AT DETECTING SMALL OBJECTS
562
00:29:17,211 --> 00:29:19,246
FLYING AROUND CLOSE ENOUGH
TO ITS TONGUE
563
00:29:19,247 --> 00:29:21,749
TO BECOME A TASTY MEAL.
564
00:29:21,750 --> 00:29:27,121
WE CAN SEE STATIONARY OBJECTS
THAT A FROG CAN'T,
565
00:29:27,122 --> 00:29:31,691
BUT WE DON'T SEE ALL THE COLORS
THAT A BUTTERFLY DOES,
566
00:29:31,692 --> 00:29:35,228
AND WE CAN'T HEAR
EVERY FREQUENCY OF SOUND
567
00:29:35,229 --> 00:29:37,731
THAT A BAT CAN,
568
00:29:37,732 --> 00:29:43,337
WHICH BEGS THE QUESTION,
WHAT IS THE WORLD REALLY LIKE?
569
00:29:43,338 --> 00:29:45,706
WHAT ARE WE NOT SEEING?
570
00:29:48,309 --> 00:29:51,144
IMAGINE A COLOR
YOU'VE NEVER EXPERIENCED BEFORE.
571
00:29:51,145 --> 00:29:52,345
NOTHING HAPPENS.
572
00:29:52,346 --> 00:29:53,712
IF WE CAN'T EVEN DO THAT,
573
00:29:53,713 --> 00:29:56,282
JUST ONE NEW COLOR THAT
YOU'VE NEVER EXPERIENCED BEFORE,
574
00:29:56,283 --> 00:29:57,750
WE'RE REALLY IN THE DARK
575
00:29:57,751 --> 00:30:03,190
ABOUT WHAT THE FULL COMPLEXITY
OF OBJECTIVE REALITY MIGHT BE.
576
00:30:03,191 --> 00:30:08,561
SO OUR SENSES ARE THIS WONDERFUL
WINDOW ON THE WORLD,
577
00:30:08,562 --> 00:30:12,266
BUT THEY'RE ALSO A PRISON THAT
WE REALLY CAN'T SEE OUTSIDE OF.
578
00:30:14,836 --> 00:30:18,838
WE CAN'T NECESSARILY
TRUST OUR SENSES,
579
00:30:18,839 --> 00:30:23,876
BUT EVEN IF WE ONLY GRASP
A SIMPLIFIED VERSION OF REALITY,
580
00:30:23,877 --> 00:30:25,479
SURELY, OUR MEMORIES
581
00:30:25,480 --> 00:30:30,150
CAN KEEP TRACK
OF WHERE AND WHEN THINGS HAPPEN.
582
00:30:30,151 --> 00:30:34,186
OR THAT'S WHAT WE THOUGHT.
583
00:30:34,187 --> 00:30:36,256
NEW RESEARCH SUGGESTS
584
00:30:36,257 --> 00:30:41,530
THAT OUR BRAINS TRICK US
INTO MISREMEMBERING THE TRUTH.
585
00:30:52,000 --> 00:30:54,367
WE CAN'T POSSIBLY
REMEMBER EVERY SINGLE THING
586
00:30:54,368 --> 00:30:56,203
THAT HAPPENS TO US,
587
00:30:56,204 --> 00:30:59,239
BUT WE TRUST THE MEMORIES
WE DO RETAIN.
588
00:30:59,240 --> 00:31:02,909
WE REMEMBER EVERY DETAIL
ABOUT THE BIRTH OF A CHILD.
589
00:31:02,910 --> 00:31:08,014
WE KNOW WHERE WE HAD A SPECIAL
MEAL AND WHOM WE WERE WITH.
590
00:31:08,015 --> 00:31:12,251
BUT WHAT IF SOME
OF THOSE MEMORIES AREN'T REAL?
591
00:31:12,252 --> 00:31:15,021
WHAT IF WE INVENTED THEM?
592
00:31:15,022 --> 00:31:20,061
OR...
SOMEONE ELSE IMPLANTED THEM?
593
00:31:23,197 --> 00:31:26,631
THIS IS SUSUMU TONEGAWA'S
FAVORITE SPOT
594
00:31:26,632 --> 00:31:29,469
TO ENJOY A CUP OF COFFEE.
595
00:31:29,470 --> 00:31:33,373
AND SITTING HERE ALSO REMINDS
THE M.I.T. SCIENTIST OF THE TIME
596
00:31:33,374 --> 00:31:37,011
TWO CARS SLAMMED INTO EACH OTHER
JUST A FEW FEET AWAY.
597
00:31:41,048 --> 00:31:44,184
HE MENTIONS THE ACCIDENT
TO HIS FRIEND,
598
00:31:44,185 --> 00:31:48,053
BUT HIS FRIEND
REMEMBERS IT DIFFERENTLY.
599
00:31:48,054 --> 00:31:49,821
I HAD AN ARGUMENT
WITH MY FRIEND,
600
00:31:49,822 --> 00:31:51,190
THAT HE SAID, "NO, NO, NO.
601
00:31:51,191 --> 00:31:53,728
ACTUALLY, CAR ACCIDENT
HAPPENED IN FRONT OF OUR LAB."
602
00:31:53,729 --> 00:31:55,762
[ CRASH ]
603
00:31:59,832 --> 00:32:03,770
Freeman: SUSUMU THOUGHT,
"NO, THAT CAN'T BE RIGHT."
604
00:32:03,771 --> 00:32:09,541
BUT I INSISTED ACCIDENT HAPPENED
IN FRONT OF COFFEE SHOP.
605
00:32:09,542 --> 00:32:13,646
Freeman: AND THEN,
HE REALIZED HIS MISTAKE.
606
00:32:13,647 --> 00:32:15,883
I WAS THINKING
OF THE CONVERSATION
607
00:32:15,884 --> 00:32:19,319
I WAS HAVING WITH MY FRIEND,
DRINKING A COFFEE,
608
00:32:19,320 --> 00:32:22,356
WHEN ACTUALLY, CAR ACCIDENT
HAPPENED IN FRONT OF OUR LAB.
609
00:32:22,357 --> 00:32:23,588
[ CRASH ]
610
00:32:23,589 --> 00:32:26,059
Freeman: HE AND HIS FRIEND
WERE IN FRONT OF THE LAB
611
00:32:26,060 --> 00:32:27,961
WHEN THE CARS COLLIDED,
612
00:32:27,962 --> 00:32:31,164
BUT HIS MIND WAS ON ONE
OF THEIR PREVIOUS CONVERSATIONS
613
00:32:31,165 --> 00:32:32,765
AT THE COFFEE SHOP.
614
00:32:32,766 --> 00:32:36,836
SUSUMU'S BRAIN MISTAKENLY
COMBINED THE TWO LOCATIONS
615
00:32:36,837 --> 00:32:42,175
AND CREATED A NEW MEMORY
THAT IS ACTUALLY FALSE.
616
00:32:42,176 --> 00:32:44,277
AS A NOBEL LAUREATE
AND A SCIENTIST
617
00:32:44,278 --> 00:32:47,448
WHO'S DEVOTED THREE DECADES
TO UNDERSTANDING MEMORY,
618
00:32:47,449 --> 00:32:52,217
SUSUMU WANTED TO KNOW
HOW THIS COULD HAPPEN.
619
00:32:52,218 --> 00:32:55,021
HE AND HIS TEAM DECIDED TO LOOK
FOR PHYSICAL EVIDENCE
620
00:32:55,022 --> 00:32:58,424
OF FALSE MEMORIES BEING FORMED.
621
00:32:58,425 --> 00:33:03,429
IN THE BRAIN,
THE AREA CALLED THE HIPPOCAMPUS
622
00:33:03,430 --> 00:33:07,733
PLAYS A VERY CRUCIAL ROLE
IN THESE TYPES OF MEMORY.
623
00:33:07,734 --> 00:33:11,337
IF YOU HAVE IMPAIRMENT
IN THE HIPPOCAMPUS,
624
00:33:11,338 --> 00:33:18,078
THEN YOU CANNOT FORM MEMORY
OF EPISODE VERY WELL.
625
00:33:18,079 --> 00:33:20,914
Freeman: SUSUMU'S RESEARCH
CENTERS ON THE PHYSICAL CHANGES
626
00:33:20,915 --> 00:33:24,618
IN THE HIPPOCAMPUS
WHEN AN EPISODIC MEMORY FORMS.
627
00:33:27,253 --> 00:33:31,089
WHEN WE EXPERIENCE SOMETHING,
LIKE WITNESSING A CAR ACCIDENT,
628
00:33:31,090 --> 00:33:34,159
IT BIOCHEMICALLY CHANGES
A SMALL GROUP OF NEURONS
629
00:33:34,160 --> 00:33:36,361
IN THE HIPPOCAMPUS.
630
00:33:36,362 --> 00:33:40,733
NEUROSCIENTISTS CALL
THAT CHANGED GROUP AN ENGRAM.
631
00:33:40,734 --> 00:33:45,571
IT IS A PHYSICAL TRACE
OF THE STORED MEMORY.
632
00:33:45,572 --> 00:33:49,009
THAT STORED MEMORY IS SOMETIMES
TRIGGERED WHEN WE SEE SOMETHING
633
00:33:49,010 --> 00:33:51,845
THAT'S NEW BUT SIMILAR.
634
00:33:51,846 --> 00:33:56,049
A LONE, MAJESTIC PINE TREE MAY
REMIND US OF OUR FIRST GLIMPSE
635
00:33:56,050 --> 00:34:00,419
OF THE EIFFEL TOWER
DURING A VACATION YEARS AGO.
636
00:34:00,420 --> 00:34:02,621
SUSUMU FOUND
THAT WHEN OLD MEMORIES
637
00:34:02,622 --> 00:34:05,458
ARE ACTIVATED
BY NEW EXPERIENCES,
638
00:34:05,459 --> 00:34:08,360
BOTH CAN BECOME CONFUSED.
639
00:34:08,361 --> 00:34:11,130
SOMETIMES, THE NEURONS
OF THE OLD MEMORY ENGRAM
640
00:34:11,131 --> 00:34:15,034
BECOME PHYSICALLY LINKED
TO THE RECENTLY FORMED ENGRAM.
641
00:34:15,035 --> 00:34:17,070
THE RESULT IS A FALSE MEMORY
642
00:34:17,071 --> 00:34:22,607
THAT MISTAKENLY COMBINES
TWO EVENTS.
643
00:34:22,608 --> 00:34:25,378
THAT GOT SUSUMU
AND HIS COLLEAGUES WONDERING,
644
00:34:25,379 --> 00:34:30,516
IS IT POSSIBLE TO INTENTIONALLY
CREATE FALSE MEMORIES?
645
00:34:30,517 --> 00:34:35,423
THEY DEVISED AN EXPERIMENT
WITH A MOUSE AND TWO CHAMBERS.
646
00:34:50,271 --> 00:34:53,739
Freeman:
THE MOUSE FORMS SEPARATE
MEMORIES FOR EACH LOCATION.
647
00:34:53,740 --> 00:34:56,275
FOR EXAMPLE,
CHAMBER B HAS A WIRE FLOOR,
648
00:34:56,276 --> 00:34:58,411
AND CHAMBER A DOES NOT.
649
00:34:58,412 --> 00:35:01,380
SUSUMU THEN SETS ABOUT
LOCATING EACH MEMORY
650
00:35:01,381 --> 00:35:03,216
IN THE MOUSE'S BRAIN.
651
00:35:05,419 --> 00:35:07,420
THE MOUSE HAS A SERIES
652
00:35:07,421 --> 00:35:11,757
OF TINY WIRES MONITORING
ACTIVITY IN ITS BRAIN.
653
00:35:11,758 --> 00:35:14,259
WHEN HE PLACES THE MOUSE
IN CHAMBER A,
654
00:35:14,260 --> 00:35:18,498
SUSUMU CAN PINPOINT THE LOCATION
OF THE CHAMBER A MEMORY.
655
00:35:18,499 --> 00:35:21,099
BUT THE WIRES
CAN ALSO STIMULATE NEURONS
656
00:35:21,100 --> 00:35:24,770
TO RESPOND BY EMITTING
SMALL PULSES OF LIGHT.
657
00:35:24,771 --> 00:35:28,609
SO WHENEVER SUSUMU SHINES
A LIGHT ON THOSE SAME NEURONS,
658
00:35:28,610 --> 00:35:32,779
HE CAN ACTIVATE THE MOUSE'S
MEMORY OF BEING IN CHAMBER A.
659
00:35:32,780 --> 00:35:35,614
ONCE THE MOUSE HAS FORMED
A MEMORY OF CHAMBER A,
660
00:35:35,615 --> 00:35:39,117
IT'S PLACED
IN THE WIRE FLOORED CHAMBER B.
661
00:35:39,118 --> 00:35:42,088
SUSUMU IS READY
TO CREATE THE FALSE MEMORY.
662
00:35:54,001 --> 00:35:58,436
THE SHOCK IS HARMLESS
BUT STARTLING.
663
00:35:58,437 --> 00:36:00,139
SINCE THE CHAMBER A MEMORY
664
00:36:00,140 --> 00:36:04,509
IS ACTIVATED WHILE THE MOUSE
RECEIVES THE SHOCK IN CHAMBER B,
665
00:36:04,510 --> 00:36:09,581
IT CREATES AN ASSOCIATION
BETWEEN CHAMBER A AND THE SHOCK.
666
00:36:09,582 --> 00:36:10,815
AND SURE ENOUGH,
667
00:36:10,816 --> 00:36:13,719
WHEN SUSUMU PLACES THE MOUSE
BACK IN CHAMBER A,
668
00:36:13,720 --> 00:36:16,322
IT SUDDENLY FREEZES IN FEAR.
669
00:36:16,323 --> 00:36:17,857
EVEN WITH NO WIRE FLOOR,
670
00:36:17,858 --> 00:36:20,659
THE MOUSE
ACTS LIKE IT MIGHT GET A SHOCK.
671
00:36:20,660 --> 00:36:22,695
IT NOW POSSESSES A FALSE MEMORY
672
00:36:22,696 --> 00:36:27,232
OF BEING SHOCKED IN THE CHAMBER
WHERE NO SHOCK EVER HAPPENED.
673
00:36:27,233 --> 00:36:29,002
SUSUMU AND HIS COLLEAGUES
674
00:36:29,003 --> 00:36:33,271
HAVE SUCCESSFULLY INSERTED
FALSE MEMORIES INTO MICE.
675
00:36:33,272 --> 00:36:37,576
DOES THIS MEAN THE SAME THING
COULD BE DONE TO PEOPLE?
676
00:36:37,577 --> 00:36:39,913
WHAT IS SCIENCE FICTION TODAY
677
00:36:39,914 --> 00:36:43,248
MAY NOT BE SCIENCE FICTION
IN 50 YEARS.
678
00:36:43,249 --> 00:36:46,052
HUMAN BRAIN MUCH BIGGER
THAN MOUSE BRAIN,
679
00:36:46,053 --> 00:36:50,288
BUT THEORETICALLY,
IT'S POSSIBLE.
680
00:36:50,289 --> 00:36:53,826
Freeman: SO IF WE CAN'T TRUST
OUR MEMORIES, OUR SENSES,
681
00:36:53,827 --> 00:36:55,561
OR EACH OTHER,
682
00:36:55,562 --> 00:36:59,299
IS THERE ANY SUCH THING
AS AN ULTIMATE TRUTH?
683
00:36:59,300 --> 00:37:03,402
THIS PHYSICIST IS LOOKING FOR
ANSWERS IN THE QUANTUM WORLD.
684
00:37:03,403 --> 00:37:08,174
HE IS FINDING THAT THE NOTION
OF TRUTH KEEPS GETTING CURIOUSER
685
00:37:08,175 --> 00:37:10,343
AND CURIOUSER.
686
00:37:13,900 --> 00:37:16,935
TRUTH IS HARD TO FIND
IN THE HUMAN WORLD.
687
00:37:16,936 --> 00:37:20,406
OUR BRAINS ARE WIRED FOR LYING.
688
00:37:20,407 --> 00:37:23,341
WE REMEMBER EVENTS
THAT NEVER HAPPENED.
689
00:37:23,342 --> 00:37:25,544
AND OUR SENSES
690
00:37:25,545 --> 00:37:29,916
DON'T PERCEIVE THE REALITY
OF THE WORLD AROUND US.
691
00:37:32,400 --> 00:37:35,167
BUT SURELY IF WE USE THE TOOLS
OF SCIENCE
692
00:37:35,168 --> 00:37:38,705
TO EXAMINE THE FUNDAMENTAL
NATURE OF REALITY,
693
00:37:38,706 --> 00:37:43,176
WE CAN SEE THE ULTIMATE TRUTH.
694
00:37:43,177 --> 00:37:49,850
UNLESS THE UNIVERSE ITSELF
LIES TO US.
695
00:37:49,851 --> 00:37:54,254
I AM JEFF TOLLAKSEN,
AND THAT'S THE TRUTH.
696
00:37:54,255 --> 00:37:56,556
Freeman:
JEFF TOLLAKSEN, A PHYSICIST
697
00:37:56,557 --> 00:38:00,192
AT CHAPMAN UNIVERSITY
IN SOUTHERN CALIFORNIA,
698
00:38:00,193 --> 00:38:03,464
HAS TAKEN MANY TRIPS
INTO THE QUANTUM WORLD.
699
00:38:03,465 --> 00:38:06,766
THERE ARE A MILLION,
MILLION, BILLION ATOMS
700
00:38:06,767 --> 00:38:09,136
IN EACH INDIVIDUAL
GRAIN OF SAND.
701
00:38:09,137 --> 00:38:10,737
BUT WHEN WE ARE TALKING ABOUT
THE QUANTUM WORLD,
702
00:38:10,738 --> 00:38:14,174
WE MEAN EVEN SMALLER PIECES OF
MATTER THAT MAKE UP THE ATOMS.
703
00:38:14,175 --> 00:38:17,076
THE PROTONS, THE NEUTRONS,
AND THE ELECTRONS...
704
00:38:17,077 --> 00:38:19,179
THEY MAKE UP EVERYTHING
IN THE ENTIRE UNIVERSE,
705
00:38:19,180 --> 00:38:21,748
INCLUDING US.
706
00:38:21,749 --> 00:38:26,286
Freeman:
JEFF KNOWS THAT THE BASIC
BUILDING BLOCKS OF EXISTENCE
707
00:38:26,287 --> 00:38:29,556
DON'T FOLLOW BASIC RULES.
708
00:38:29,557 --> 00:38:32,292
Tollaksen: TAKE,
FOR INSTANCE, THE ELECTRON.
709
00:38:32,293 --> 00:38:33,893
THE LAWS OF THE QUANTUM WORLD
710
00:38:33,894 --> 00:38:36,596
SUGGEST THAT THINGS CAN BE
AT MANY DIFFERENT PLACES
711
00:38:36,597 --> 00:38:38,031
AT THE SAME TIME.
712
00:38:38,032 --> 00:38:43,303
THEY ALSO FORBID US FROM KNOWING
EVERYTHING ABOUT THE ELECTRON.
713
00:38:43,304 --> 00:38:45,571
IT'S A BIT LIKE
LOOKING AT A HUMMINGBIRD.
714
00:38:45,572 --> 00:38:49,143
ITS WINGS ARE MOVING SO FAST
THAT THEY APPEAR AS JUST A BLUR.
715
00:38:49,144 --> 00:38:51,779
BUT IF I TAKE A PHOTO
OF THE HUMMINGBIRD,
716
00:38:51,780 --> 00:38:54,047
I CAN LEARN ONE OF TWO THINGS.
717
00:38:54,048 --> 00:38:56,351
IF I SET IT
TO A HIGH SHUTTER SPEED...
718
00:38:59,153 --> 00:39:01,355
...I CAN CLEARLY SEE
THE LOCATION OF THE WINGS,
719
00:39:01,356 --> 00:39:03,357
BUT I CAN'T TELL ANYTHING
ABOUT VELOCITY.
720
00:39:03,358 --> 00:39:06,126
SO NOW I'LL SET IT
TO A LOW SHUTTER SPEED.
721
00:39:08,695 --> 00:39:09,995
AND NOW IT'S JUST A BLUR.
722
00:39:09,996 --> 00:39:12,533
I CAN'T TELL ANYTHING
ABOUT THE LOCATION OF THE WINGS,
723
00:39:12,534 --> 00:39:15,402
BUT I CAN CLEARLY SEE
THAT THEY HAVE A VELOCITY.
724
00:39:15,403 --> 00:39:18,073
Freeman: SIMILARLY, WE CAN NEVER
KNOW THE TRUE POSITION
725
00:39:18,074 --> 00:39:21,674
AND VELOCITY OF AN ELECTRON.
726
00:39:21,675 --> 00:39:24,812
SO THE NOTION OF TRUTH
AT THE QUANTUM LEVEL
727
00:39:24,813 --> 00:39:30,116
IS VERY DIFFERENT FROM OUR USUAL
HUMAN UNDERSTANDING OF TRUTH.
728
00:39:30,117 --> 00:39:32,652
Freeman: BUT AS STRANGE
AS THESE PARTICLES ARE,
729
00:39:32,653 --> 00:39:35,321
WE STILL KNOW
THEY ARE BITS OF MATTER
730
00:39:35,322 --> 00:39:37,623
AND THEY HAVE
CERTAIN DEFINING PROPERTIES,
731
00:39:37,624 --> 00:39:42,462
SUCH AS SPIN DIRECTION
AND ELECTRICAL CHARGE.
732
00:39:42,463 --> 00:39:47,400
MATTER AND ITS PROPERTIES
GO TOGETHER LIKE ROCK AND HARD.
733
00:39:47,401 --> 00:39:51,205
YOU CAN'T HAVE ONE
WITHOUT THE OTHER.
734
00:39:51,206 --> 00:39:53,540
OR CAN YOU?
735
00:39:53,541 --> 00:39:55,141
THE MORE JEFF AND HIS COLLEAGUES
736
00:39:55,142 --> 00:39:57,879
STUDY THE BUILDING BLOCKS
OF THE UNIVERSE,
737
00:39:57,880 --> 00:40:02,482
THE CURIOUSER AND CURIOUSER
IT ALL BECOMES.
738
00:40:02,483 --> 00:40:06,085
Tollaksen:
IF YOU'VE EVER READ LEWIS
CARROLL'S "ALICE IN WONDERLAND,"
739
00:40:06,086 --> 00:40:08,654
YOU KNOW
THAT THERE IS A CHESHIRE CAT.
740
00:40:08,655 --> 00:40:11,725
NOW, THE CHESHIRE CAT
HAS A GRIN.
741
00:40:11,726 --> 00:40:13,160
AND IT'S A REMARKABLE GRIN.
742
00:40:13,161 --> 00:40:15,995
SO YOU CAN'T HAVE THE
CHESHIRE CAT WITHOUT THE GRIN.
743
00:40:15,996 --> 00:40:18,464
THE GRIN BELONGS TO THE CAT.
744
00:40:18,465 --> 00:40:21,301
BUT ONE DAY, ALICE IS HAVING
A CONVERSATION WITH THE CAT,
745
00:40:21,302 --> 00:40:23,770
AND SUDDENLY,
THE BODY DISAPPEARS,
746
00:40:23,771 --> 00:40:25,337
LEAVING JUST THE GRIN.
747
00:40:25,338 --> 00:40:26,739
TO WHICH ALICE SAID,
748
00:40:26,740 --> 00:40:29,442
"WELL, I'VE OFTEN SEEN A CAT
WITHOUT A GRIN.
749
00:40:29,443 --> 00:40:30,743
BUT A GRIN WITHOUT A CAT?
750
00:40:30,744 --> 00:40:34,047
IT'S THE MOST CURIOUS THING
I'VE EVER SEEN."
751
00:40:34,048 --> 00:40:36,484
NOW, IT SEEMS
PHYSICALLY IMPOSSIBLE,
752
00:40:36,485 --> 00:40:39,219
EVEN IN YOUR WILDEST DREAMS,
THAT SUCH A THING COULD HAPPEN.
753
00:40:39,220 --> 00:40:43,357
BUT WHAT'S REMARKABLE IS WE'VE
PREDICTED HOW YOU COULD DO THIS,
754
00:40:43,358 --> 00:40:47,326
NAMELY SEPARATE PROPERTIES
FROM MATTER.
755
00:40:47,327 --> 00:40:50,062
Freeman:
IN JULY 2014,
756
00:40:50,063 --> 00:40:53,734
JEFF AND COLLEAGUES AT THE
VIENNA INSTITUTE OF TECHNOLOGY
757
00:40:53,735 --> 00:40:56,536
PUT THAT PREDICTION TO THE TEST.
758
00:40:56,537 --> 00:41:01,808
COULD THEY ACTUALLY
CREATE A QUANTUM CHESHIRE CAT?
759
00:41:01,809 --> 00:41:05,377
THEY SPLIT A STREAM OF NEUTRONS
INTO TWO BEAMS.
760
00:41:05,378 --> 00:41:08,582
THEN, THEY USED MAGNETIC FIELDS
TO GIVE THE NEUTRONS
761
00:41:08,583 --> 00:41:11,850
IN EACH BEAM
OPPOSITE SPIN DIRECTION.
762
00:41:11,851 --> 00:41:14,855
USING OTHER MAGNETIC FIELDS
AND FILTERS,
763
00:41:14,856 --> 00:41:16,989
THEY MANIPULATED THE SYSTEM
764
00:41:16,990 --> 00:41:19,393
UNTIL SOMETHING VERY CURIOUS
HAPPENED.
765
00:41:19,394 --> 00:41:23,230
THE MASS OF THE NEUTRONS WENT
ENTIRELY THROUGH THE UPPER BEAM,
766
00:41:23,231 --> 00:41:25,466
WHILE THE NEUTRONS'
SPIN PROPERTIES
767
00:41:25,467 --> 00:41:29,034
TRAVELED EXCLUSIVELY
THROUGH THE LOWER BEAM.
768
00:41:29,035 --> 00:41:31,404
LIKE A CAT AND ITS GRIN,
769
00:41:31,405 --> 00:41:34,709
MATTER AND ITS PROPERTIES
WERE SEPARATED.
770
00:41:36,709 --> 00:41:38,911
IF IT'S POSSIBLE
TO SEPARATE AN OBJECT
771
00:41:38,912 --> 00:41:43,016
FROM THE PROPERTIES
THAT WE USE TO DESCRIBE IT,
772
00:41:43,017 --> 00:41:44,283
IS TRUTH ITSELF
773
00:41:44,284 --> 00:41:47,587
JUST ANOTHER PROPERTY
THAT CAN BE STRIPPED AWAY?
774
00:41:47,588 --> 00:41:51,190
ARE WE CLOSER TO FINDING
THE TRUTH ABOUT THE UNIVERSE,
775
00:41:51,191 --> 00:41:55,896
OR CLOSER TO DISMISSING IT
AS NOTHING MORE THAN A PHANTOM?
776
00:41:58,365 --> 00:42:01,803
Tollaksen:
EVERY TIME WE PEEL BACK
A LITTLE BIT MORE OF THAT VEIL,
777
00:42:01,804 --> 00:42:06,605
WE DISCOVER INCREDIBLY BEAUTIFUL
AND AWE INSPIRING NEW TRUTHS.
778
00:42:06,606 --> 00:42:09,710
WHETHER OR NOT SCIENTISTS
WILL EVER BE ABLE TO DISCOVER
779
00:42:09,711 --> 00:42:14,114
ABSOLUTE TRUTH,
DEEP NATURE OF EVERYTHING,
780
00:42:14,115 --> 00:42:15,714
WE DON'T KNOW.
781
00:42:15,715 --> 00:42:19,319
BUT IT IS IN THE SPIRIT
OF SCIENCE TO KEEP TRYING.
782
00:42:19,320 --> 00:42:23,255
WILL WE CONTINUE TO PEEL BACK
LAYER AFTER LAYER
783
00:42:23,256 --> 00:42:26,192
OF NEW TRUTHS FOREVER?
784
00:42:26,193 --> 00:42:29,795
COULD WE EVEN COMPREHEND THE
TRUTH WITH OUR LIMITED SENSES
785
00:42:29,796 --> 00:42:33,366
AND OUR FAULTY,
SELECTIVE MEMORIES?
786
00:42:33,367 --> 00:42:38,170
THERE'S ONLY ONE THING
WE CAN BE SURE OF...
787
00:42:38,171 --> 00:42:41,742
ANYONE WHO CLAIMS
TO KNOW THE ULTIMATE TRUTH...
788
00:42:43,843 --> 00:42:48,448
...IS PROBABLY JUST
TELLING YOU ANOTHER LIE.
789
00:42:48,449 --> 00:42:48,816
[ CHUCKLES ]
63442
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