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These are the user uploaded subtitles that are being translated: 1 00:00:02,000 --> 00:00:05,436 OUR UNIVERSE CERTAINLY SEEMS REAL. 2 00:00:05,437 --> 00:00:08,239 BUT WHAT IF IT'S NOT? 3 00:00:08,240 --> 00:00:11,342 WE MAY BE NOTHING MORE THAN VIDEO GAME CHARACTERS 4 00:00:11,343 --> 00:00:15,114 DESIGNED FOR SOMEONE ELSE'S AMUSEMENT. 5 00:00:15,115 --> 00:00:19,817 BUT HOW COULD A COMPUTER JUGGLE EVERY ASPECT OF THE COSMOS? 6 00:00:19,818 --> 00:00:22,488 MAYBE WHAT LOOKS RANDOM 7 00:00:22,489 --> 00:00:27,024 HAS ALREADY BEEN PROGRAMMED TO HAPPEN. 8 00:00:27,025 --> 00:00:29,360 CAN WE DISCOVER SOME HIDDEN GLITCH 9 00:00:29,361 --> 00:00:34,900 IN THE LAWS OF THE UNIVERSE AND UNCOVER ITS HIDDEN CODE? 10 00:00:34,901 --> 00:00:37,170 DO WE LIVE IN THE MATRIX? 11 00:00:41,439 --> 00:00:46,012 SPACE, TIME, LIFE ITSELF. 12 00:00:48,381 --> 00:00:52,584 THE SECRETS OF THE COSMOS LIE THROUGH THE WORMHOLE. 13 00:00:52,585 --> 00:00:55,587 Captions by VITAC www.vitac.com 14 00:00:55,588 --> 00:00:58,625 CAPTIONS PAID FOR BY DISCOVERY COMMUNICATIONS 15 00:01:05,564 --> 00:01:08,134 PICK UP A ROSE. 16 00:01:08,135 --> 00:01:10,634 TAKE IN ITS SCENT. 17 00:01:10,635 --> 00:01:15,140 FEAST YOUR EYES ON THE CRIMSON OF ITS PETALS. 18 00:01:15,141 --> 00:01:19,044 FEEL THE PRICK OF ITS THORN ON YOUR FINGER. 19 00:01:19,045 --> 00:01:23,782 THESE SENSATIONS ARE WHAT GROUND US IN REALITY. 20 00:01:23,783 --> 00:01:28,053 BUT WHAT IF THEY'RE JUST FABRICATED? 21 00:01:28,054 --> 00:01:31,956 WHAT IF WE ARE MERELY PLAYERS IN SOMEONE ELSE'S VIDEO GAME, 22 00:01:31,957 --> 00:01:33,491 THE BIG BANG JUST THE MOMENT 23 00:01:33,492 --> 00:01:38,497 SOMEONE FLIPPED THE SWITCH AND TURNED ON OUR UNIVERSE? 24 00:01:38,498 --> 00:01:40,699 IN THE MOVIE "THE MATRIX," 25 00:01:40,700 --> 00:01:44,537 THERE WAS ONE WAY TO SEE THE TRUTH BEHIND A FAKE REALITY. 26 00:01:46,540 --> 00:01:49,607 TAKE THE RED PILL. 27 00:01:49,608 --> 00:01:51,378 ARE YOU READY FOR IT? 28 00:01:54,213 --> 00:01:58,283 JESSE SCHELL KNOWS A LOT ABOUT VIDEO GAMES. 29 00:01:58,284 --> 00:02:01,487 HE TEACHES STUDENTS AT CARNEGIE MELLON UNIVERSITY 30 00:02:01,488 --> 00:02:03,455 HOW TO DESIGN THEM. 31 00:02:03,456 --> 00:02:06,625 HE APPRECIATES THE ENORMOUS EFFORT IT WOULD TAKE TO CREATE 32 00:02:06,626 --> 00:02:11,363 ALL THE DETAILS OF OUR WORLD INSIDE A COMPUTER. 33 00:02:11,364 --> 00:02:13,965 THE MOST SOPHISTICATED VIDEO GAMES 34 00:02:13,966 --> 00:02:17,235 ARE STILL PLAYED ON TWO DIMENSIONAL SCREENS, 35 00:02:17,236 --> 00:02:19,438 LIKE THE ONE YOU'RE WATCHING NOW. 36 00:02:21,741 --> 00:02:24,844 Schell: CREATING THE ILLUSION OF THREE DIMENSIONS ON FLAT SCREENS 37 00:02:24,845 --> 00:02:28,079 IS MUCH SIMPLER THAN ACTUALLY CREATING 38 00:02:28,080 --> 00:02:31,984 REAL THREE DIMENSIONAL SPACE THAT WE CAN MOVE AROUND IN. 39 00:02:31,985 --> 00:02:34,919 SO PROGRAMMING 3D SPACE AS WE KNOW IT 40 00:02:34,920 --> 00:02:37,222 WOULD BE MANY, MANY ORDERS OF MAGNITUDE 41 00:02:37,223 --> 00:02:40,992 MORE DIFFICULT THAN ANYTHING WE KNOW HOW TO DO RIGHT NOW. 42 00:02:40,993 --> 00:02:43,794 Freeman: JESSE AND OTHER VIDEO GAME DESIGNERS ARE PRETTY GOOD 43 00:02:43,795 --> 00:02:48,032 AT SIMULATING THE WAY OBJECTS MOVE THROUGH SPACE. 44 00:02:48,033 --> 00:02:51,336 THEY USE NEWTON'S LAWS OF GRAVITY AND MOTION, 45 00:02:51,337 --> 00:02:54,506 JUST AS THE DESIGNERS OF OUR WORLD WOULD. 46 00:02:54,507 --> 00:02:56,608 THE BALLS HAVE WEIGHT. 47 00:02:56,609 --> 00:02:58,210 AIR IS MOVING AROUND THEM. 48 00:02:58,211 --> 00:02:59,644 ELECTRICAL CHARGES 49 00:02:59,645 --> 00:03:02,714 ARE INCREASING AND DECREASING ON THE SURFACE OF EACH BALL. 50 00:03:02,715 --> 00:03:06,251 AND EVEN IF I'M A LITTLE BIT OFF, 51 00:03:06,252 --> 00:03:09,020 THE LAWS OF PHYSICS ARE STILL INTACT. 52 00:03:09,021 --> 00:03:11,690 BUT IF THE RULES THEMSELVES ARE OFF, 53 00:03:11,691 --> 00:03:14,592 THEN WE'LL KNOW RIGHT AWAY THAT SOMETHING'S WRONG, 54 00:03:14,593 --> 00:03:18,663 THAT IT'S NOT AN ACCURATE SIMULATION OF OUR WORLD. 55 00:03:18,664 --> 00:03:20,999 Freeman: MAKING A BELIEVABLE REALITY 56 00:03:21,000 --> 00:03:23,801 WOULD TAKE FAR MORE THAN PERFECT PROGRAMMING 57 00:03:23,802 --> 00:03:26,771 OF THE WAY OBJECTS LOOK AND MOVE. 58 00:03:26,772 --> 00:03:29,374 YOU'D HAVE TO PROGRAM ALL THE OTHER SENSES, TOO... 59 00:03:29,375 --> 00:03:32,877 SOUND, SMELL, TASTE, AND TOUCH, 60 00:03:32,878 --> 00:03:34,746 AND ALL THE SUBTLE VARIATIONS. 61 00:03:34,747 --> 00:03:38,684 AND IF EVEN ONE SMALL THING WAS OFF, LIKE, SAY THIS COFFEE 62 00:03:38,685 --> 00:03:41,986 HAVING THE SAME TASTE AND TEMPERATURE AS THIS CEREAL, 63 00:03:41,987 --> 00:03:47,026 YOU'D KNOW RIGHT AWAY THAT SOMETHING WAS TERRIBLY WRONG. 64 00:03:48,995 --> 00:03:52,097 Freeman: HOW WOULD YOU COMPUTERIZE TASTE 65 00:03:52,098 --> 00:03:55,900 OR PROGRAM THE FEEL OF SOFT GRASS UNDERFOOT? 66 00:03:55,901 --> 00:03:57,401 EVEN THE AIR WE BREATHE 67 00:03:57,402 --> 00:04:00,172 IS FILLED WITH GASSES, WATER MOLECULES, 68 00:04:00,173 --> 00:04:03,675 DUST PARTICLES AND POLLEN. 69 00:04:03,676 --> 00:04:07,045 AT CARNEGIE MELLON'S ENTERTAINMENT TECHNOLOGY CENTER, 70 00:04:07,046 --> 00:04:09,381 JESSE IS TRYING TO MAKE SIMULATIONS 71 00:04:09,382 --> 00:04:12,484 AS IMMERSIVE AS POSSIBLE. 72 00:04:12,485 --> 00:04:14,686 IN WHAT HE CALLS THE CAVE, 73 00:04:14,687 --> 00:04:19,290 A MOVING PLATFORM ADDS TO THE VISUAL EXPERIENCE. 74 00:04:19,291 --> 00:04:22,693 BUT SOMETIMES THE SIMULATION IS TOO MUCH FOR THE COMPUTER, 75 00:04:22,694 --> 00:04:25,864 AND WE GET GLITCHES, JUST LIKE IN A VIDEO GAME. 76 00:04:25,865 --> 00:04:28,532 IT'S POSSIBLE THAT IF WE WERE MAKING A SIMULATION 77 00:04:28,533 --> 00:04:31,503 OF THE REAL WORLD THAT THE SAME THING COULD HAPPEN. 78 00:04:31,504 --> 00:04:33,972 Freeman: WHEN A COMPUTER CAN'T KEEP UP WITH THE VISUALS 79 00:04:33,973 --> 00:04:35,539 IT NEEDS TO RENDER, 80 00:04:35,540 --> 00:04:39,943 YOU OFTEN SEE A DEFECT CALLED SCREEN TEARING. 81 00:04:39,944 --> 00:04:42,414 WE'VE NEVER SEEN THAT IN OUR WORLD, 82 00:04:42,415 --> 00:04:47,152 BUT NOT ALL GLITCHES WOULD BE VISIBLE TO PEOPLE ON THE INSIDE. 83 00:04:47,153 --> 00:04:49,455 Schell: IF THE SIMULATION FREEZES, 84 00:04:49,456 --> 00:04:52,756 THEN THE PEOPLE WHO ARE IN IT MIGHT NOT KNOW 85 00:04:52,757 --> 00:04:55,359 BECAUSE IT COULD FREEZE FOR A THOUSAND YEARS. 86 00:04:55,360 --> 00:04:57,196 AND ANYONE WHO WAS PART OF THE SIMULATION 87 00:04:57,197 --> 00:05:00,431 WOULD ALSO BE FROZEN IN A STATE OF SUSPENDED ANIMATION SO THAT, 88 00:05:00,432 --> 00:05:01,801 WHEN IT STARTED UP AGAIN, 89 00:05:01,802 --> 00:05:03,869 IT WOULD BE ABSOLUTELY SEAMLESS TO THEM, 90 00:05:03,870 --> 00:05:06,173 AND THEY WOULD NEVER KNOW. 91 00:05:07,973 --> 00:05:09,708 Freeman: IF SOMEONE ELSE HAS CREATED US 92 00:05:09,709 --> 00:05:11,943 INSIDE THEIR COMPUTERS, 93 00:05:11,944 --> 00:05:14,280 THEN THEY MUST ALSO HAVE BUILT PROGRAMS 94 00:05:14,281 --> 00:05:18,515 FOR ALL OF OUR MENTAL ABILITIES, OUR IMAGINATIONS, 95 00:05:18,516 --> 00:05:21,520 OUR EMOTIONS AND THE THOUGHTS RUNNING THROUGH OUR HEADS 96 00:05:21,521 --> 00:05:25,523 EVERY TIME WE ENGAGE IN CONVERSATION. 97 00:05:25,524 --> 00:05:27,126 AS HUMANS, WE GET SO MUCH INFORMATION 98 00:05:27,127 --> 00:05:31,063 FROM TALKING THAT AN ACCURATE CONVERSATION PROGRAM IS CRUCIAL. 99 00:05:31,064 --> 00:05:33,498 WHAT DID YOU WANT TO BE WHEN YOU GREW UP? 100 00:05:33,499 --> 00:05:34,934 A FIREMAN. 101 00:05:34,935 --> 00:05:37,068 A FIREMAN? THAT'S NOBLE. 102 00:05:37,069 --> 00:05:39,938 SO EITHER, "A," YOU'VE GOT A DEATH WISH, 103 00:05:39,939 --> 00:05:42,540 OR, "B," YOU LIKE TO STARE AT FIRE. 104 00:05:42,541 --> 00:05:45,075 AND IT ONLY TAKES US A SPLIT SECOND TO NOTICE A PROBLEM 105 00:05:45,076 --> 00:05:46,244 WITH THE CONVERSATION. 106 00:05:46,245 --> 00:05:47,778 SO YOU CAN IMAGINE THE CHALLENGE 107 00:05:47,779 --> 00:05:53,852 OF SIMULATING 7 BILLION PEOPLE ALL TALKING TOGETHER AT ONCE. 108 00:05:53,853 --> 00:05:57,621 Freeman: JESSE THINKS OUR CREATORS COULD BE USING A FEW SHORTCUTS 109 00:05:57,622 --> 00:05:59,458 TO HANDLE THIS HEAVY LOAD, 110 00:05:59,459 --> 00:06:04,229 CONCEPTS ALREADY USED BY TODAY'S GAME PROGRAMMERS. 111 00:06:04,230 --> 00:06:06,866 YOU COULD MAKE JUST A FEW PEOPLE BE ACTIVE PLAYERS 112 00:06:06,867 --> 00:06:08,667 AND THEN SURROUND THEM WITH BILLIONS 113 00:06:08,668 --> 00:06:11,001 OF MUCH SIMPLER CHARACTERS. 114 00:06:11,002 --> 00:06:14,972 OR ANOTHER THING YOU COULD DO IS ONLY PUT DETAILED SIMULATION 115 00:06:14,973 --> 00:06:17,042 WHERE I'M LOOKING AT A GIVEN TIME. 116 00:06:17,043 --> 00:06:18,710 IF I'M LOOKING JUST TO ONE PLACE, 117 00:06:18,711 --> 00:06:20,513 JUST PUT ALL THE FOCUS OVER THERE 118 00:06:20,514 --> 00:06:24,883 AND MAKE EVERYTHING ELSE AROUND ME JUST KIND OF A BLUR. 119 00:06:24,884 --> 00:06:28,787 Freeman: MAYBE YOU ARE THE ONLY ACTIVE PLAYER IN THIS GAME 120 00:06:28,788 --> 00:06:30,655 YOU CALL YOUR LIFE. 121 00:06:30,656 --> 00:06:34,592 EVERYONE ELSE EXISTS ONLY WHEN YOU ARE PAYING ATTENTION. 122 00:06:34,593 --> 00:06:38,196 YOUR PROGRAM WOULD BE THE ONLY ONE RUNNING ALL THE TIME, 123 00:06:38,197 --> 00:06:40,465 EVEN WHEN YOU SLEEP. 124 00:06:40,466 --> 00:06:43,335 Schell: DREAMS ARE ALREADY A KIND OF SIMULATED REALITY. 125 00:06:43,336 --> 00:06:46,770 SO TO PROGRAM DREAMS, YOU'D HAVE TO CREATE A VIRTUAL REALITY 126 00:06:46,771 --> 00:06:49,773 WITHIN A VIRTUAL REALITY. 127 00:06:49,774 --> 00:06:55,479 Freeman: IF OUR WORLD IS AN INCREDIBLY COMPLEX COMPUTATIONAL CREATION, 128 00:06:55,480 --> 00:06:58,415 WHAT DOES THAT SAY ABOUT ITS CREATORS? 129 00:06:58,416 --> 00:07:00,785 WHAT MUST THEIR REALITY BE LIKE 130 00:07:00,786 --> 00:07:06,991 IF SPAWNING AN ENTIRE UNIVERSE IS JUST A GAME? 131 00:07:06,992 --> 00:07:10,328 AS DIFFICULT AS IT IS FOR US TO IMAGINE CREATING A UNIVERSE 132 00:07:10,329 --> 00:07:11,929 AS COMPLEX AS OUR OWN, 133 00:07:11,930 --> 00:07:14,131 IT MIGHT NOT ACTUALLY BE THAT HARD FOR SOMEONE 134 00:07:14,132 --> 00:07:16,734 LIVING IN A UNIVERSE MORE ADVANCED THAN OURS. 135 00:07:16,735 --> 00:07:18,938 I THINK I'LL NEED TO SLEEP ON THAT IDEA. 136 00:07:22,208 --> 00:07:25,910 IF WE ARE LIVING IN A SIMULATION RIGHT NOW, 137 00:07:25,911 --> 00:07:28,412 WHO CREATED IT? 138 00:07:28,413 --> 00:07:30,215 GOD? 139 00:07:30,216 --> 00:07:32,383 MORE ADVANCED ALIEN LIFEFORMS 140 00:07:32,384 --> 00:07:35,921 THAT DREAMT US UP TO BE THEIR AVATARS? 141 00:07:35,922 --> 00:07:41,094 OR COULD OUR CREATORS BE FUTURE VERSIONS OF OURSELVES? 142 00:07:46,132 --> 00:07:47,631 NICK BOSTROM, 143 00:07:47,632 --> 00:07:52,003 A PROFESSOR OF PHILOSOPHY AT THE UNIVERSITY OF OXFORD, 144 00:07:52,004 --> 00:07:57,441 BELIEVES WE ARE ALMOST CERTAINLY LIVING INSIDE THE COMPUTERS 145 00:07:57,442 --> 00:07:59,744 OF OUR DESCENDANTS. 146 00:07:59,745 --> 00:08:02,481 THE BUILDINGS HERE IN OXFORD ARE REALLY OLD. 147 00:08:02,482 --> 00:08:05,518 I MEAN, THIS WALL MIGHT BE 400 OR 500 YEARS OLD. 148 00:08:05,519 --> 00:08:07,119 AND THINK OF ALL THE TECHNOLOGY 149 00:08:07,120 --> 00:08:09,989 WE HAVE DEVELOPED IN THESE SHORT CENTURIES. 150 00:08:09,990 --> 00:08:12,624 SO IF WE ZOOM FORWARD A FEW CENTURIES, 151 00:08:12,625 --> 00:08:15,594 THEN PRESUMABLY WE WILL THEN HAVE TECHNOLOGY 152 00:08:15,595 --> 00:08:18,196 THAT WOULD BE EQUALLY MAGICAL TO US, 153 00:08:18,197 --> 00:08:19,463 AS TELEVISION 154 00:08:19,464 --> 00:08:22,299 WOULD BE TO OUR ANCESTORS WHO BUILT THESE WALLS. 155 00:08:22,300 --> 00:08:24,602 Freeman: NICK BELIEVES OVER THE NEXT FEW CENTURIES, 156 00:08:24,603 --> 00:08:29,506 WE'LL BE COMBINING TECHNOLOGY WITH OUR OWN BIOLOGY. 157 00:08:29,507 --> 00:08:32,377 WE WILL EVOLVE INTO POSTHUMANS, 158 00:08:32,378 --> 00:08:37,617 HYBRIDS OF MAN AND MACHINE WITH PHENOMENAL COMPUTATIONAL POWERS. 159 00:08:39,586 --> 00:08:41,253 JUST 20 YEARS AGO, 160 00:08:41,254 --> 00:08:45,056 A REALISTIC SIMULATION OF A CITY WAS IMPOSSIBLE. 161 00:08:45,057 --> 00:08:49,393 NOW WE CAN MAKE THOSE FAKE SCENES PRETTY CONVINCING. 162 00:08:49,394 --> 00:08:52,531 THE COMBINED PROCESSING POWER OF POSTHUMANS 163 00:08:52,532 --> 00:08:56,133 WOULD HAVE NO TROUBLE RENDERING AN ENTIRE WORLD 164 00:08:56,134 --> 00:08:58,603 AND ALL THE PEOPLE IN IT. 165 00:08:58,604 --> 00:09:01,040 WE CAN ESTIMATE THE AMOUNT OF COMPUTING POWER 166 00:09:01,041 --> 00:09:04,609 IT WOULD TAKE TO SIMULATE ONE HUMAN BRAIN. 167 00:09:04,610 --> 00:09:09,013 AND IT'S POSSIBLE TO CALCULATE HOW MUCH COMPUTING POWER 168 00:09:09,014 --> 00:09:11,950 A TECHNOLOGICALLY MATURE CIVILIZATION 169 00:09:11,951 --> 00:09:13,719 WOULD HAVE AT ITS DISPOSAL. 170 00:09:13,720 --> 00:09:15,186 A MATURE CIVILIZATION WOULD HAVE 171 00:09:15,187 --> 00:09:19,490 VASTLY MORE COMPUTATIONAL POWER AVAILABLE THAN IT WOULD TAKE 172 00:09:19,491 --> 00:09:25,062 TO RUN A FULL SIMULATION WITH ALL 7 BILLION PEOPLE IN IT. 173 00:09:25,063 --> 00:09:27,298 Freeman: CREATING A VIRTUAL VERSION OF OUR WORLD 174 00:09:27,299 --> 00:09:30,902 WOULD BE AS EASY FOR POSTHUMANS AS SNAPPING A FINGER. 175 00:09:30,903 --> 00:09:34,672 BUT WHY DOES NICK THINK OUR DESCENDANTS 176 00:09:34,673 --> 00:09:35,875 HAVE ALREADY DONE IT? 177 00:09:39,013 --> 00:09:43,114 THIS PRICELESS, REAL HUMAN SKULL 178 00:09:43,115 --> 00:09:45,817 WAS USED IN THE VERY FIRST PERFORMANCE 179 00:09:45,818 --> 00:09:49,388 OF SHAKESPEARE'S "HAMLET." 180 00:09:49,389 --> 00:09:51,090 HERE HUNG THOSE LIPS 181 00:09:51,091 --> 00:09:56,329 I HAVE KISSED I KNOW NOT HOW OFT. 182 00:09:56,330 --> 00:10:00,166 ACTUALLY, IT'S ONLY A CHEAP REPRODUCTION, 183 00:10:00,167 --> 00:10:03,170 ONE OF MANY THOUSANDS USED IN THE COUNTLESS TIMES 184 00:10:03,171 --> 00:10:06,505 THE PLAY HAS BEEN PERFORMED. 185 00:10:06,506 --> 00:10:09,974 WHAT IF EACH OF US IS LIKE THAT SKULL? 186 00:10:09,975 --> 00:10:13,513 THERE'S ONE ORIGINAL, BIOLOGICAL VERSION 187 00:10:13,514 --> 00:10:17,484 AND THOUSANDS OF FABRICATED COPIES. 188 00:10:17,485 --> 00:10:22,721 WHAT ARE THE CHANCES THAT I AM THE ORIGINAL VERSION OF ME 189 00:10:22,722 --> 00:10:27,927 OR THAT YOU ARE THE ORIGINAL VERSION OF YOU? 190 00:10:32,032 --> 00:10:34,867 UNIVERSITY OF OXFORD PHILOSOPHER NICK BOSTROM 191 00:10:34,868 --> 00:10:37,835 IS TRYING TO GET HIMSELF INTO THE MINDSET 192 00:10:37,836 --> 00:10:41,740 OF OUR SUPERINTELLIGENT POSTHUMAN DESCENDANTS. 193 00:10:41,741 --> 00:10:44,744 HE THINKS THEIR VAST COMPUTING POWER 194 00:10:44,745 --> 00:10:48,181 WILL ALLOW THEM TO CREATE VIRTUAL REALITIES 195 00:10:48,182 --> 00:10:52,887 AND WATCH THEM AS EASILY AS WE WATCH TV. 196 00:10:54,988 --> 00:10:57,824 IMAGINE THAT I'M ONE OF THESE POSTHUMANS. 197 00:10:57,825 --> 00:11:00,459 I MAY DECIDE TO RUN ELABORATE SIMULATIONS 198 00:11:00,460 --> 00:11:04,229 FOR SCIENTIFIC PURPOSES OR MAYBE FOR ENTERTAINMENT. 199 00:11:04,230 --> 00:11:07,432 THINK OF THESE AS THE MOST INCREDIBLE STAGE ADAPTATIONS 200 00:11:07,433 --> 00:11:09,202 EVER CREATED. 201 00:11:12,972 --> 00:11:14,540 DISCORDANCE. 202 00:11:14,541 --> 00:11:17,408 A FAMILY CLEFT IN TWAIN, MY WIFE, 203 00:11:17,409 --> 00:11:20,546 THY SKULL WITHOUT A BRAIN. BOY! 204 00:11:20,547 --> 00:11:22,114 AY, FATHER. THOU CALLST ME? 205 00:11:22,115 --> 00:11:24,316 WHAT SAYEST THOU UPON THE MATTER? 206 00:11:24,317 --> 00:11:28,620 Freeman: WILLIAM SHAKESPEARE SIMULATED THE STORY OF A DANISH PRINCE 207 00:11:28,621 --> 00:11:32,423 NAMED HAMLET SOME 400 YEARS AGO. 208 00:11:32,424 --> 00:11:34,393 400 YEARS IN THE FUTURE, 209 00:11:34,394 --> 00:11:37,430 WHEN OUR DESCENDANTS HAVE THE DRAMATIC URGE, 210 00:11:37,431 --> 00:11:40,499 THEY MAY MAKE SIMULATIONS OF US. 211 00:11:40,500 --> 00:11:44,103 WITH ALL OF THESE CAPABILITIES THAT POSTHUMANS WOULD POSSESS, 212 00:11:44,104 --> 00:11:46,705 I COULD CONTINUALLY REFINE THE SIMULATIONS 213 00:11:46,706 --> 00:11:49,975 UNTIL THEY MATCHED THE REALITY OF MY ANCESTORS. 214 00:11:49,976 --> 00:11:51,377 ALL RIGHT. STOP. 215 00:11:51,378 --> 00:11:52,545 Freeman: SO, HOW LIKELY IS IT 216 00:11:52,546 --> 00:11:55,080 THAT WE ARE MERELY PATTERNS OF DATA 217 00:11:55,081 --> 00:11:57,649 ON A POSTHUMAN HARD DRIVE? 218 00:11:57,650 --> 00:12:01,320 NICK AND A COLLEAGUE HAVE MADE THE CALCULATIONS, 219 00:12:01,321 --> 00:12:04,322 AND THE RESULTS ARE UNSETTLING. 220 00:12:04,323 --> 00:12:08,826 IF MY POSTHUMAN CIVILIZATION HAS THE ABILITY TO CREATE 221 00:12:08,827 --> 00:12:12,330 ONE INCREDIBLY ACCURATE SIMULATION OF MY ANCESTORS, 222 00:12:12,331 --> 00:12:14,899 THEN WE'LL SOON HAVE THE TECHNOLOGY 223 00:12:14,900 --> 00:12:18,070 TO CREATE THOUSANDS, EVEN MILLIONS, 224 00:12:18,071 --> 00:12:19,973 OF VARIATIONS OF THE SIMULATION 225 00:12:19,974 --> 00:12:24,042 TO EXAMINE ALL POSSIBLE VARIATIONS OF OUR PAST. 226 00:12:24,043 --> 00:12:26,311 Freeman: ARE WE BIOLOGICAL BEINGS 227 00:12:26,312 --> 00:12:30,114 LIVING HERE AND NOW IN THE 21st CENTURY, 228 00:12:30,115 --> 00:12:33,619 OR IS THIS ACTUALLY THE 25th CENTURY, 229 00:12:33,620 --> 00:12:39,090 AND ARE WE ONE OF MANY SIMULATED COPIES OF POSTHUMAN ANCESTORS? 230 00:12:39,091 --> 00:12:42,661 NICK SAYS THE ODDS AGAINST OUR BEING BIOLOGICAL HUMANS 231 00:12:42,662 --> 00:12:45,663 ARE OVERWHELMING. 232 00:12:45,664 --> 00:12:48,234 Bostrom: IT'S LIKE THE ODDS THAT I'M WATCHING THIS PLAY 233 00:12:48,235 --> 00:12:50,835 THE FIRST TIME IT'S EVER BEEN PERFORMED. 234 00:12:50,836 --> 00:12:52,437 IT'S MUCH MORE LIKELY THAT I'M WATCHING ONE 235 00:12:52,438 --> 00:12:54,005 OF THE MANY THOUSANDS OF TIMES 236 00:12:54,006 --> 00:12:56,307 IT'S BEEN PERFORMED OVER HUNDREDS OF YEARS. 237 00:12:56,308 --> 00:12:57,576 CUT! 238 00:12:57,577 --> 00:12:59,010 NICELY DONE. 239 00:12:59,011 --> 00:13:00,713 Freeman: IF NICK IS RIGHT, 240 00:13:00,714 --> 00:13:02,681 WE'LL NEED TO GET USED TO THE IDEA 241 00:13:02,682 --> 00:13:06,353 THAT OUR LIVES ARE JUST COMPUTER FABRICATED DRAMAS. 242 00:13:07,854 --> 00:13:11,392 LET'S HOPE OUR CREATORS ARE ENJOYING THE SHOW. 243 00:13:13,594 --> 00:13:16,763 COULD SOMETHING AS COMPLICATED AS A HUMAN BEING 244 00:13:16,764 --> 00:13:19,665 EVER BE COMPUTER SIMULATED? 245 00:13:19,666 --> 00:13:22,268 THE CHARACTERS WE PLAY WITH IN VIDEO GAMES 246 00:13:22,269 --> 00:13:24,737 HAVE COME A LONG WAY OVER THE YEARS 247 00:13:24,738 --> 00:13:27,473 FROM BODIES MADE OF CRUDE, PIXILATED BLOCKS 248 00:13:27,474 --> 00:13:32,112 TO INCREASINGLY LIFELIKE VERSIONS OF OURSELVES. 249 00:13:38,717 --> 00:13:41,420 BUT EVEN THE MOST REALISTIC AVATARS 250 00:13:41,421 --> 00:13:44,690 ONLY LOOK REAL ON THE OUTSIDE. 251 00:13:44,691 --> 00:13:50,128 COULD WE EVER BUILD A BODY FROM THE INSIDE OUT, 252 00:13:50,129 --> 00:13:53,431 CELL BY CELL? 253 00:13:53,432 --> 00:13:56,468 AND COULD THAT SIMULATED PERSON 254 00:13:56,469 --> 00:14:00,274 BE AN EXACT COPY OF A FLESH AND BLOOD HUMAN? 255 00:14:04,311 --> 00:14:05,777 STEVEN LARSON 256 00:14:05,778 --> 00:14:10,282 WANTS TO BUILD THE WORLD'S FIRST FULLY DIGITAL ANIMAL, 257 00:14:10,283 --> 00:14:14,253 A PERFECT REPLICA OF ITS BIOLOGICAL COUNTERPART. 258 00:14:14,254 --> 00:14:18,156 HE'S STARTING SMALL. 259 00:14:18,157 --> 00:14:19,325 ALL AROUND THE WORLD, 260 00:14:19,326 --> 00:14:22,393 YOU CAN FIND A ONE MILLIMETER LONG WORM 261 00:14:22,394 --> 00:14:24,864 MUCH SMALLER THAN A TYPICAL EARTHWORM. 262 00:14:24,865 --> 00:14:29,368 THIS BARELY VISIBLE WORM IS KNOWN AS C. ELEGANS. 263 00:14:29,369 --> 00:14:30,969 NOW, IT MAY SEEM INSIGNIFICANT, 264 00:14:30,970 --> 00:14:33,037 BUT THIS LITTLE GUY HAS THE DISTINCTION 265 00:14:33,038 --> 00:14:35,907 OF BEING ONE OF THE MOST THOROUGHLY STUDIED ANIMALS 266 00:14:35,908 --> 00:14:40,112 IN ALL OF BIOLOGY AND NEUROSCIENCE. 267 00:14:40,113 --> 00:14:41,580 Freeman: STEVEN AND HIS COLLEAGUES 268 00:14:41,581 --> 00:14:45,185 ARE COMPILING DECADES OF RESEARCH ABOUT THIS TINY WORM 269 00:14:45,186 --> 00:14:46,619 IN ORDER TO CREATE 270 00:14:46,620 --> 00:14:50,255 THE WORLD'S MOST REALISTIC COMPUTER GENERATED CREATURE. 271 00:14:50,256 --> 00:14:53,792 IT ONLY HAS ABOUT 1,000 CELLS, 959 TO BE EXACT, 272 00:14:53,793 --> 00:14:58,930 AND ONLY 302 NEURONS, ABOUT 95 BODY WALL MUSCLE CELLS. 273 00:14:58,931 --> 00:15:02,703 Freeman: THAT SOUNDS EASY ENOUGH TO BUILD, BUT IT'S NOT. 274 00:15:02,704 --> 00:15:06,805 EACH CELL NEEDS TO RUN ITS OWN SPECIFIC COMPUTER CODE. 275 00:15:06,806 --> 00:15:09,941 AND ALL THE PIECES OF CODE MUST FUNCTION TOGETHER, 276 00:15:09,942 --> 00:15:12,478 JUST AS THE CONNECTED CELLS DO. 277 00:15:12,479 --> 00:15:15,781 WHEN FINISHED, IT WON'T JUST LOOK REAL. 278 00:15:15,782 --> 00:15:18,551 IT WILL ACT REAL. 279 00:15:18,552 --> 00:15:22,388 IT WILL SEEK VIRTUAL FOOD, PRODUCE VIRTUAL WASTE, 280 00:15:22,389 --> 00:15:25,426 AND CREATE VIRTUAL OFFSPRING. 281 00:15:28,428 --> 00:15:32,364 AND MAKING IT WILL NOT BE CHILD'S PLAY. 282 00:15:32,365 --> 00:15:34,200 THIS LITTLE, REMOTE CONTROLLED CAR 283 00:15:34,201 --> 00:15:38,570 ONLY HAS ABOUT ONE TENTH AS MANY PARTS AS C. ELEGANS. 284 00:15:38,571 --> 00:15:40,138 NOW, HERE, 285 00:15:40,139 --> 00:15:43,041 WE HAVE A FULL SIZE CAR MADE OF THOUSANDS OF PARTS 286 00:15:43,042 --> 00:15:45,045 INCLUDING COMPUTERS AND WIRING. 287 00:15:45,046 --> 00:15:47,178 IT DOES ALL SORTS OF COMPLEX THINGS, 288 00:15:47,179 --> 00:15:49,181 LIKE NAVIGATION, AIR CONDITIONING. 289 00:15:49,182 --> 00:15:51,316 IT HAS LIGHTS. 290 00:15:51,317 --> 00:15:52,951 Freeman: A WORM'S COMPONENTS 291 00:15:52,952 --> 00:15:57,855 ARE INTERCONNECTED, JUST LIKE THOSE OF A CAR. 292 00:15:57,856 --> 00:16:00,426 Larson: IN A WORM, IN ADDITION TO BUILDING MUSCLE CELLS 293 00:16:00,427 --> 00:16:01,960 AND NERVE CELLS, 294 00:16:01,961 --> 00:16:04,497 WE'RE ALSO CREATING MODELS OF HOW MUSCLE CELLS WORK TOGETHER 295 00:16:04,498 --> 00:16:06,366 AND HOW THE NERVOUS SYSTEM SHOULD WORK. 296 00:16:06,367 --> 00:16:09,903 THEN, WE CAN CONNECT THE MUSCLE CELLS TO THE NERVOUS SYSTEM. 297 00:16:15,240 --> 00:16:17,744 NOW, WHEN WE DO THAT, THIS MAY BE THE RESULT. 298 00:16:22,182 --> 00:16:23,581 NOTHING. 299 00:16:23,582 --> 00:16:25,349 BECAUSE OF ALL THE COMPLEX INTERACTIONS. 300 00:16:25,350 --> 00:16:27,853 [ ENGINE TURNS OVER ] 301 00:16:27,854 --> 00:16:29,354 Freeman: BUT IF STEVEN AND HIS COLLEAGUES 302 00:16:29,355 --> 00:16:32,657 PRECISELY SIMULATE EVERY CELL OF C. ELEGANS 303 00:16:32,658 --> 00:16:36,628 AND GET ALL THOSE INDIVIDUAL PROGRAMS WORKING TOGETHER, 304 00:16:36,629 --> 00:16:40,899 HIS COMPUTERIZED WORM WILL DO SOMETHING NO CAR CAN. 305 00:16:40,900 --> 00:16:45,204 IT WILL LIVE AND ACT COMPLETELY UNDER ITS OWN CONTROL. 306 00:16:47,073 --> 00:16:48,373 IT'S A MUCH BIGGER CHALLENGE 307 00:16:48,374 --> 00:16:50,542 THAN JUST PROGRAMMING FLASHY VIDEO GAME CHARACTERS 308 00:16:50,543 --> 00:16:53,811 THAT LOOK LIKE REAL LIFE APPROXIMATIONS OF CREATURES. 309 00:16:53,812 --> 00:16:56,648 IF WE WANTED TO, WE COULD ALREADY PROGRAM A C. ELEGANS 310 00:16:56,649 --> 00:17:00,551 AND MAKE IT LOOK LIKE IT CAN DO ALL SORTS OF AMAZING THINGS. 311 00:17:00,552 --> 00:17:03,287 Freeman: SO FAR, STEVEN AND HIS COLLEAGUES 312 00:17:03,288 --> 00:17:06,057 HAVE WRITTEN PROGRAMS FOR SOME OF THE WORM'S MUSCLE 313 00:17:06,058 --> 00:17:07,960 AND NERVE CELLS. 314 00:17:07,961 --> 00:17:10,429 BUT THEY'RE STILL WORKING ON CODE TO SIMULATE 315 00:17:10,430 --> 00:17:13,431 THE COMPLEX ELECTRICAL AND CHEMICAL INTERACTIONS 316 00:17:13,432 --> 00:17:15,768 BETWEEN THEM. 317 00:17:15,769 --> 00:17:18,136 Larson: SO WE STILL HAVE A LOT OF WORK TO GET EVERYTHING BUILT, 318 00:17:18,137 --> 00:17:21,206 WIRED AND CONNECTED TOGETHER SO THAT OUR VIRTUAL WORM 319 00:17:21,207 --> 00:17:24,209 WILL BEHAVE JUST AS A REAL, BIOLOGICAL WORM. 320 00:17:24,210 --> 00:17:28,447 Freeman: THEN THE STAGE WILL BE SET TO WORK ON MORE COMPLEX CREATURES. 321 00:17:28,448 --> 00:17:31,549 A HUMAN IS MADE UP OF TRILLIONS OF CELLS, 322 00:17:31,550 --> 00:17:34,419 SO CREATING ONE BIOLOGICALLY ACCURATE, 323 00:17:34,420 --> 00:17:36,387 COMPUTER GENERATED PERSON 324 00:17:36,388 --> 00:17:39,825 WOULD BE LIKE WIRING TOGETHER ALL THE PARTS 325 00:17:39,826 --> 00:17:43,027 IN MORE THAN 100 MILLION CARS. 326 00:17:43,028 --> 00:17:45,197 Larson: IT MAY TAKE MANY DECADES OR EVEN CENTURIES, 327 00:17:45,198 --> 00:17:46,533 BUT I BELIEVE THAT, ONE DAY, 328 00:17:46,534 --> 00:17:48,534 WE SHOULD BE ABLE TO BUILD VIRTUAL VERSIONS 329 00:17:48,535 --> 00:17:51,870 OF OURSELVES THAT ARE LIKE US IN EVERY WAY. 330 00:17:51,871 --> 00:17:53,572 SO WE'LL HAVE TO GET USED TO THE IDEA 331 00:17:53,573 --> 00:17:57,643 THAT VIRTUAL OR ARTIFICIAL ENTITIES MAY SOMEDAY THINK 332 00:17:57,644 --> 00:18:00,511 AND ACT FOR THEMSELVES. 333 00:18:00,512 --> 00:18:03,214 HEY, WAIT! 334 00:18:03,215 --> 00:18:06,483 Freeman: IF WE'RE ALREADY LIVING IN A VIRTUAL REALITY, 335 00:18:06,484 --> 00:18:10,622 THEN WE MUST BE THOSE LIFELIKE ARTIFICIAL CREATURES. 336 00:18:10,623 --> 00:18:12,691 BUT HOW CAN WE PROVE IT? 337 00:18:12,692 --> 00:18:15,093 THIS PHYSICIST BELIEVES HE'S FOUND A GLITCH 338 00:18:15,094 --> 00:18:17,197 IN THE WORKINGS OF OUR UNIVERSE 339 00:18:17,198 --> 00:18:20,900 THAT COULD SHOW US THE MATRIX IS A REALITY. 340 00:18:24,997 --> 00:18:29,836 ARTIFICIAL ENVIRONMENTS ARE BUILT ON A 3D GRID. 341 00:18:29,837 --> 00:18:33,239 IF SOMEONE BUILT OUR UNIVERSE IN A COMPUTER, 342 00:18:33,240 --> 00:18:38,578 WE SHOULD BE ABLE TO FIND THIS GRID UNDERPINNING EVERYTHING. 343 00:18:38,579 --> 00:18:41,880 WE'VE NEVER SEEN ANY SIGN OF IT, 344 00:18:41,881 --> 00:18:45,283 BUT ONE SCIENTIST THINKS HE KNOWS HOW TO LOOK 345 00:18:45,284 --> 00:18:49,789 UNDER THE SURFACE OF THE COSMOS 346 00:18:49,790 --> 00:18:53,626 TO DETERMINE IF THERE IS AN ARTIFICIAL WIRE FRAME 347 00:18:53,627 --> 00:18:56,163 HOLDING REALITY TOGETHER. 348 00:18:59,567 --> 00:19:01,099 SILAS BEANE, 349 00:19:01,100 --> 00:19:04,369 A NUCLEAR PHYSICIST AT THE UNIVERSITY OF WASHINGTON, 350 00:19:04,370 --> 00:19:08,506 THINKS ABOUT THE GRID LIKE A FOOTBALL FIELD. 351 00:19:08,507 --> 00:19:11,143 Beane: A FOOTBALL FIELD IS KNOWN AS A GRIDIRON 352 00:19:11,144 --> 00:19:13,345 BECAUSE OF ALL THE YARDAGE MARKERS. 353 00:19:13,346 --> 00:19:15,582 NOW, IF YOU IMAGINE EXTENDING THOSE YARDAGE MARKERS 354 00:19:15,583 --> 00:19:19,018 FROM SIDELINE TO SIDELINE AND FROM END ZONE TO END ZONE, 355 00:19:19,019 --> 00:19:21,121 THEN FURTHER EXTEND THOSE GRID LINES 356 00:19:21,122 --> 00:19:23,423 INTO THE THIRD DIMENSION ABOVE THE FIELD, 357 00:19:23,424 --> 00:19:25,691 THEN YOU HAVE A GRID OR LATTICE STRUCTURE, 358 00:19:25,692 --> 00:19:27,460 WHICH IS VERY SIMILAR TO THE FOUNDATIONS 359 00:19:27,461 --> 00:19:31,030 OF THE ENVIRONMENT OF A VIDEO GAME. 360 00:19:31,031 --> 00:19:33,366 Freeman: WE INSTINCTIVELY THINK OF THE SPACE AROUND US 361 00:19:33,367 --> 00:19:36,335 AS CONTINUOUS AND INDIVISIBLE. 362 00:19:36,336 --> 00:19:39,137 SPACE DOESN'T APPEAR TO COME IN CUBES. 363 00:19:39,138 --> 00:19:42,641 BUT IN A DIGITAL REALITY, IT WOULD. 364 00:19:42,642 --> 00:19:45,778 OUR GRID WOULD HAVE TO BE SMALLER THAN THE SMALLEST THING 365 00:19:45,779 --> 00:19:49,814 WE KNOW, A SUBATOMIC PARTICLE. 366 00:19:49,815 --> 00:19:51,684 Beane: THERE WOULD STILL BE MINUTE DISTANCES 367 00:19:51,685 --> 00:19:52,918 BETWEEN THE POINTS ON THE GRID 368 00:19:52,919 --> 00:19:54,387 THAT ARE CONNECTED TO EACH OTHER. 369 00:19:54,388 --> 00:19:55,553 IF WE'RE LIVING IN A SIMULATION, 370 00:19:55,554 --> 00:19:58,057 THEN THIS IS WHAT SPACETIME COULD LOOK LIKE. 371 00:19:58,058 --> 00:20:03,029 SPACE WILL ALWAYS BE IN DISCRETE PIECES RATHER THAN CONTINUOUS. 372 00:20:03,030 --> 00:20:05,397 Freeman: SUCH A FINE GRAINED, 3D GRID 373 00:20:05,398 --> 00:20:08,967 WOULD BE IMPOSSIBLE TO NOTICE IN OUR DAILY LIVES. 374 00:20:08,968 --> 00:20:14,174 IT WOULD EVEN ELUDE ALMOST ALL SCIENTIFIC EXPERIMENTS. 375 00:20:14,175 --> 00:20:15,941 BUT SILAS AND HIS COLLEAGUES 376 00:20:15,942 --> 00:20:20,781 HAVE DEVISED A PLAN TO DETECT IT IF IT EXISTS. 377 00:20:22,048 --> 00:20:26,318 HE THINKS THE MOST EXPLOSIVE EVENTS IN THE UNIVERSE 378 00:20:26,319 --> 00:20:28,855 MIGHT GIVE IT AWAY. 379 00:20:28,856 --> 00:20:31,256 SUPERNOVAS GENERATE STREAMS 380 00:20:31,257 --> 00:20:35,227 OF SUPER HIGH ENERGY COSMIC RAY PARTICLES, 381 00:20:35,228 --> 00:20:38,797 BUT PHYSICISTS HAVE NOTICED SOMETHING STRANGE ABOUT THEM. 382 00:20:38,798 --> 00:20:44,837 THE HIGHEST ENERGY COSMIC RAYS THEY EXPECT TO SEE ARE MISSING. 383 00:20:44,838 --> 00:20:47,507 SILAS THINKS THE GRID MIGHT BE THE CULPRIT. 384 00:20:47,508 --> 00:20:49,609 Beane: IF REALITY IS REAL, 385 00:20:49,610 --> 00:20:52,177 AND THERE'S NO ARTIFICIAL STRUCTURE TO OUR UNIVERSE, 386 00:20:52,178 --> 00:20:54,480 THEN THERE IS NO UPPER LIMIT ON THE ENERGY 387 00:20:54,481 --> 00:20:57,651 THAT A COSMIC RAY PARTICLE CAN HAVE WHEN IT IS FIRST CREATED. 388 00:20:57,652 --> 00:20:59,785 BUT THERE DOES SEEM TO BE A LIMIT, 389 00:20:59,786 --> 00:21:02,955 WHAT WE CALL THE COSMIC RAY CUT OFF. 390 00:21:02,956 --> 00:21:07,260 Freeman: IF COSMIC RAYS ARE RESTRICTED TO MOVING ONLY ALONG GRID LINES, 391 00:21:07,261 --> 00:21:10,428 IT COULD ACT AS A BREAK ON THEIR ENERGY. 392 00:21:10,429 --> 00:21:11,964 TO TEST THIS THEORY, 393 00:21:11,965 --> 00:21:15,333 SILAS AND HIS COLLEAGUES WANT TO COMPARE THE ENERGY LEVELS 394 00:21:15,334 --> 00:21:18,637 OF COSMIC RAYS TRAVELING IN DIFFERENT DIRECTIONS. 395 00:21:18,638 --> 00:21:21,541 [ PLAYS NOTE ON TUBA ] 396 00:21:21,542 --> 00:21:22,974 IMAGINE IF EACH OF THESE BAND MEMBERS 397 00:21:22,975 --> 00:21:24,510 IS A COSMIC RAY PARTICLE. 398 00:21:24,511 --> 00:21:26,180 WE CAN LEARN A LOT BY OBSERVING THEIR MOTION. 399 00:21:26,181 --> 00:21:29,447 [ DRUM BEATING ] 400 00:21:29,448 --> 00:21:31,552 [ BAND PLAYING "STAR SPANGLED BANNER" ] 401 00:21:35,421 --> 00:21:37,689 IN A UNIVERSE WITHOUT AN UNDERLYING GRID STRUCTURE, 402 00:21:37,690 --> 00:21:40,259 PARTICLES MOVE IN THE SAME WAY IN ALL DIRECTIONS. 403 00:21:40,260 --> 00:21:41,661 NOW LET'S SEE WHAT HAPPENS 404 00:21:41,662 --> 00:21:44,030 IF WE ASSUME THAT THERE IS AN UNDERLYING GRID STRUCTURE. 405 00:21:48,836 --> 00:21:51,637 Freeman: MOVING STRAIGHT ALONG A GRID AXIS IS SIMPLE, 406 00:21:51,638 --> 00:21:55,441 LIKE THE PATH OF BAND MEMBERS IN THE BLUE UNIFORMS. 407 00:21:55,442 --> 00:21:58,977 MOVING DIAGONALLY, LIKE THOSE IN WHITE UNIFORMS, 408 00:21:58,978 --> 00:22:02,749 REQUIRES A SERIES OF ZIG ZAG STEPS. 409 00:22:02,750 --> 00:22:05,451 THAT MEANS THEY WOULD HAVE TO EXPEND MORE ENERGY 410 00:22:05,452 --> 00:22:07,586 GETTING FROM POINT "A" TO POINT "B" 411 00:22:07,587 --> 00:22:10,491 COMPARED WITH COSMIC RAYS MOVING ALONG AN AXIS. 412 00:22:12,725 --> 00:22:14,327 Beane: ANOTHER WAY OF SAYING THAT IS THE PARTICLES 413 00:22:14,328 --> 00:22:16,730 MOVING IN DIFFERENT DIRECTIONS ON THE GRID 414 00:22:16,731 --> 00:22:20,198 WOULD HAVE ENERGIES THAT DEPEND ON THE ANGLE. 415 00:22:20,199 --> 00:22:22,501 Freeman: SILAS BELIEVES IF WE MEASURE 416 00:22:22,502 --> 00:22:24,904 COSMIC RAYS ZIPPING THROUGH SPACE 417 00:22:24,905 --> 00:22:27,473 AND FIND THAT THOSE TRAVELING AT ONE ANGLE 418 00:22:27,474 --> 00:22:29,241 HAVE CONSISTENTLY DIFFERENT ENERGIES 419 00:22:29,242 --> 00:22:31,609 FROM THOSE TRAVELING AT ANOTHER ANGLE, 420 00:22:31,610 --> 00:22:35,580 THEN WE'LL KNOW THERE'S A GRID STRUCTURE TO OUR UNIVERSE. 421 00:22:35,581 --> 00:22:38,716 Beane: IT'S A GLITCH IN THE SYSTEM, AN INDICATION THAT OUR UNIVERSE 422 00:22:38,717 --> 00:22:41,920 MAY BE OPERATING IN A SIMULATED, ARTIFICIAL MANNER. 423 00:22:41,921 --> 00:22:44,823 I THINK IT WOULD CAUSE EVERYONE TO THINK ABOUT THE UNIVERSE 424 00:22:44,824 --> 00:22:48,427 DIFFERENTLY AND TO REALLY SEARCH FOR AN EXPLANATION FOR WHY 425 00:22:48,428 --> 00:22:51,397 THERE IS THIS GRID STRUCTURE, WHETHER IT BE A NATURAL ONE 426 00:22:51,398 --> 00:22:56,335 OR WHETHER IT BE DUE TO THE FACT THAT WE ARE BEING SIMULATED. 427 00:22:56,336 --> 00:22:58,537 Freeman: IF WE'RE LIVING IN A VIRTUAL REALITY 428 00:22:58,538 --> 00:23:01,640 INSIDE A COMPUTER, SOME KIND OF MASS CODE 429 00:23:01,641 --> 00:23:05,511 MUST RUN ALL THE PROGRAMS THAT MAKE UP OUR UNIVERSE. 430 00:23:05,512 --> 00:23:10,049 YOU WOULD THINK THAT CODE WOULD HAVE TO BE IMPOSSIBLY COMPLEX. 431 00:23:10,050 --> 00:23:14,253 BUT THIS COMPUTER SCIENTIST CLAIMS HE CAN RUN THE UNIVERSE 432 00:23:14,254 --> 00:23:17,858 FROM THE LINES OF CODE ON A SINGLE NOTE CARD. 433 00:23:21,500 --> 00:23:26,303 IMAGINE THAT SOME ENTITY, FAR MORE ADVANCED THAN US, 434 00:23:26,304 --> 00:23:29,438 COULD INVENT COMPUTER PROGRAMS FOR EVERY ASPECT 435 00:23:29,439 --> 00:23:33,877 OF OUR UNIVERSE... THE BEHAVIOR OF ATOMS, 436 00:23:33,878 --> 00:23:37,548 THE LAWS OF GRAVITY, THE HUMAN GENOME. 437 00:23:37,549 --> 00:23:40,384 TO MANAGE ALL OF THOSE INDIVIDUAL PROGRAMS, 438 00:23:40,385 --> 00:23:43,619 THE CREATOR WOULD NEED SOME MASTER PROGRAM, 439 00:23:43,620 --> 00:23:46,089 LIKE A COSMIC OPERATING SYSTEM. 440 00:23:46,090 --> 00:23:53,696 THE SOFTWARE WOULD BE IMPOSSIBLY LONG AND COMPLEX, RIGHT? 441 00:23:53,697 --> 00:23:55,366 MAYBE NOT. 442 00:23:55,367 --> 00:23:57,400 ONE GERMAN COMPUTER SCIENTIST 443 00:23:57,401 --> 00:24:01,504 CLAIMS THAT THESE FEW LINES OF CODE 444 00:24:01,505 --> 00:24:05,610 ARE ALL SOMEONE WOULD NEED TO RUN OUR UNIVERSE. 445 00:24:08,213 --> 00:24:09,879 JUERGEN SCHMIDHUBER 446 00:24:09,880 --> 00:24:13,250 IS THE DIRECTOR OF THE SWISS ARTIFICIAL INTELLIGENCE LAB 447 00:24:13,251 --> 00:24:16,020 IN LUGANO, SWITZERLAND. 448 00:24:16,021 --> 00:24:20,258 HE BELIEVES OUR UNIVERSE COULD WELL BE COMPUTER GENERATED 449 00:24:20,259 --> 00:24:24,127 AND THINKS HE KNOWS HOW TO WRITE ITS CODE. 450 00:24:24,128 --> 00:24:26,597 Schmidhuber: I BELIEVE IT'S QUITE POSSIBLE 451 00:24:26,598 --> 00:24:29,700 THAT OUR UNIVERSE IS COMPUTABLE, 452 00:24:29,701 --> 00:24:34,637 MEANING EVERYTHING IS PART OF A COMPUTER SIMULATION. 453 00:24:34,638 --> 00:24:35,938 NOW, YOU MAY SAY, 454 00:24:35,939 --> 00:24:38,943 "HOW COULD YOU POSSIBLY PROGRAM THE WHOLE UNIVERSE 455 00:24:38,944 --> 00:24:41,945 WITHIN FEWER THAN 10 LINES OF CODE?" 456 00:24:41,946 --> 00:24:43,047 WELL, THERE ARE MANY THINGS 457 00:24:43,048 --> 00:24:46,117 ABOUT OUR WORLD THAT SEEM VERY COMPLEX 458 00:24:46,118 --> 00:24:48,784 BUT REALLY AREN'T. 459 00:24:48,785 --> 00:24:49,986 Freeman: JUERGEN BELIEVES 460 00:24:49,987 --> 00:24:54,692 IT ALL BOILS DOWN TO A SINGLE CORE PRINCIPLE... 461 00:24:54,693 --> 00:24:57,194 DATA COMPRESSION. 462 00:24:57,195 --> 00:25:01,331 FOR EXAMPLE, THIS IS AN INCREDIBLY LONG NUMBER, 463 00:25:01,332 --> 00:25:04,367 LONG ENOUGH TO WRAP AROUND THE WORLD 464 00:25:04,368 --> 00:25:08,704 AND COME BACK AGAIN OVER AND OVER FOREVER. 465 00:25:08,705 --> 00:25:11,008 THERE'S A VERY SIMPLE CONCEPT BEHIND IT, 466 00:25:11,009 --> 00:25:13,109 WHICH IS THE RATIO 467 00:25:13,110 --> 00:25:15,312 BETWEEN THE CIRCUMFERENCE OF A CIRCLE 468 00:25:15,313 --> 00:25:19,348 AND ITS DIAMETER, CALLED PI. 469 00:25:19,349 --> 00:25:21,652 THERE IS A VERY SHORT CODE, A SHORT PROGRAM, 470 00:25:21,653 --> 00:25:25,455 THAT COMPUTES THIS ENTIRE, LONG SEQUENCE. 471 00:25:25,456 --> 00:25:27,624 Freeman: COMPRESSING A GIANT NUMBER LIKE PI 472 00:25:27,625 --> 00:25:31,761 INTO A FEW CHARACTERS OF CODE IS SIMPLE. 473 00:25:31,762 --> 00:25:35,866 SIMILAR DATA COMPRESSION COULD BE TAKING PLACE ALL AROUND US. 474 00:25:35,867 --> 00:25:39,104 CLOUDS IN THE SKY MIGHT BE RENDERED BY SIMPLE EQUATIONS 475 00:25:39,105 --> 00:25:42,572 THAT GENERATE COMPLEX SHAPES AND MOVEMENTS. 476 00:25:42,573 --> 00:25:46,275 THE SAME GOES FOR OUR ENTIRE LANDSCAPE. 477 00:25:46,276 --> 00:25:48,979 COMPUTER GENERATED FRACTAL LANDSCAPE PROGRAMS 478 00:25:48,980 --> 00:25:52,450 TAKE SMALL TRIANGLES, STACK THEM ON TOP OF EACH OTHER 479 00:25:52,451 --> 00:25:56,287 WHILE ALSO ROTATING AND CRUSHING EACH OTHER ON VARIOUS SIDES, 480 00:25:56,288 --> 00:25:59,255 TO MAKE VERY REALISTIC VERSIONS OF NATURE. 481 00:25:59,256 --> 00:26:01,425 AND IN A VIRTUAL REALITY, 482 00:26:01,426 --> 00:26:03,327 THIS MOUNTAIN OR SIMILAR MOUNTAINS 483 00:26:03,328 --> 00:26:07,830 CAN BE CREATED WITH JUST A FEW LINES OF CODE. 484 00:26:07,831 --> 00:26:09,399 Freeman: A SIMPLE REPEATING PROGRAM 485 00:26:09,400 --> 00:26:12,602 MAY WORK FINE FOR BUILDING A VIRTUAL MOUNTAIN, 486 00:26:12,603 --> 00:26:15,405 BUT WHAT ABOUT LIVING CREATURES? 487 00:26:15,406 --> 00:26:19,509 HOW ABOUT THE COMPLEXITY OF HUMAN BEHAVIOR? 488 00:26:19,510 --> 00:26:22,445 CAN ALL OF OUR MOVEMENTS AND DECISIONS 489 00:26:22,446 --> 00:26:25,882 BE COMPRESSED INTO SIMPLE BITS OF CODE? 490 00:26:25,883 --> 00:26:27,451 ACCORDING TO JUERGEN, 491 00:26:27,452 --> 00:26:31,387 WHAT WE CALL LEARNING IS REALLY DATA COMPRESSION. 492 00:26:31,388 --> 00:26:33,624 ANYONE WHO'S TRIED TO FIND A NEW ADDRESS 493 00:26:33,625 --> 00:26:37,328 IN AN UNFAMILIAR CITY KNOWS HOW COMPLICATED THAT CAN BE. 494 00:26:37,329 --> 00:26:42,198 BUT ONCE THE ROUTE HAS BEEN LEARNED, THE NEXT TRIP IS EASY. 495 00:26:42,199 --> 00:26:44,300 Schmidhuber: HUMANS ARE PROBLEM SOLVERS. 496 00:26:44,301 --> 00:26:46,569 AND ANY EFFICIENT PROBLEM SOLVER 497 00:26:46,570 --> 00:26:51,008 IS GOING TO TRY TO FIND A SOLUTION TO THE GIVEN PROBLEM 498 00:26:51,009 --> 00:26:54,912 THAT IS BOTH SIMPLE AND FAST. 499 00:26:54,913 --> 00:26:58,516 Freeman: IF JUERGEN DECIDES TO GO TO THE TOP OF A NEARBY MOUNTAIN, 500 00:26:58,517 --> 00:27:02,086 HE'LL USE A SERIES OF SIMPLE PROGRAMS TO GET THERE. 501 00:27:02,087 --> 00:27:05,756 EACH PROGRAM THAT GOES INTO ACCOMPLISHING THE LARGER TASK 502 00:27:05,757 --> 00:27:09,326 IS KNOWN AS A SUBPROGRAM. 503 00:27:09,327 --> 00:27:13,096 THE FIRST IDEA THAT COMES TO MIND IS TO REUSE A SUBPROGRAM 504 00:27:13,097 --> 00:27:15,199 THAT I LEARNED A LONG TIME AGO, 505 00:27:15,200 --> 00:27:17,967 WHICH INVOLVES SENDING ELECTRICAL SIGNALS 506 00:27:17,968 --> 00:27:19,270 TO MY LEG MUSCLES 507 00:27:19,271 --> 00:27:20,837 AND MAKE THEM MOVE IN A CERTAIN WAY. 508 00:27:20,838 --> 00:27:23,175 THAT'S CALLED WALKING. 509 00:27:26,042 --> 00:27:28,477 Freeman: THE COORDINATED ACTION OF BILLIONS OF NERVE 510 00:27:28,478 --> 00:27:32,183 AND MUSCLE CELLS IS NOW A SIMPLE SUBPROGRAM. 511 00:27:33,951 --> 00:27:36,854 THE SAME GOES FOR A MORE COMPLEX INTERACTION 512 00:27:36,855 --> 00:27:40,257 BETWEEN MAN AND MACHINE. 513 00:27:40,258 --> 00:27:42,593 Schmidhuber: IT INVOLVES A LITTLE PIECE OF MACHINERY 514 00:27:42,594 --> 00:27:45,463 WITH TWO WHEELS AND, AGAIN, ANOTHER SUBPROGRAM 515 00:27:45,464 --> 00:27:47,597 THAT INVOKES MY LEG MUSCLES IN A CERTAIN WAY. 516 00:27:47,598 --> 00:27:50,367 AND THAT'S CALLED BIKING. 517 00:27:50,368 --> 00:27:53,037 Freeman: BUT ARE THERE SOME ASPECTS OF OUR UNIVERSE 518 00:27:53,038 --> 00:27:56,473 THAT CAN'T BE COMPRESSED INTO SIMPLE PROGRAMS? 519 00:27:56,474 --> 00:28:00,543 SURELY, WE CAN'T COMPRESS EVERYTHING IN OUR LIVES. 520 00:28:00,544 --> 00:28:03,312 WHAT IF HE LOSES HIS TICKET? 521 00:28:03,313 --> 00:28:05,581 WHAT IF THE TRAM BREAKS DOWN? 522 00:28:05,582 --> 00:28:09,419 CAN TRULY RANDOM EVENTS BE PROGRAMMED? 523 00:28:09,420 --> 00:28:10,654 JUERGEN BELIEVES 524 00:28:10,655 --> 00:28:14,223 THAT WHAT WE SEE AS RANDOM OR ACCIDENTAL EVENTS 525 00:28:14,224 --> 00:28:17,528 ONLY HAVE THE APPEARANCE OF RANDOMNESS. 526 00:28:17,529 --> 00:28:22,132 THEY ARE WHAT HE CALLS PSEUDORANDOM. 527 00:28:22,133 --> 00:28:25,702 SO IF THIS UNIVERSE CAN BE COMPUTED BY A SHORT PROGRAM, 528 00:28:25,703 --> 00:28:29,473 THAN BY DEFINITION IT CANNOT BE RANDOM. 529 00:28:29,474 --> 00:28:32,710 IT MUST BE PSEUDORANDOM, JUST LIKE PI, 530 00:28:32,711 --> 00:28:36,647 BECAUSE TRULY RANDOM DATA IS NOT COMPRESSIBLE. 531 00:28:38,081 --> 00:28:41,217 Freeman: IF JUERGEN IS RIGHT, THEN THERE IS NO LUCK, 532 00:28:41,218 --> 00:28:44,088 NO CHANCE, NO FREE WILL. 533 00:28:44,089 --> 00:28:46,757 EVERYTHING WE'VE EVER DONE AND WILL DO 534 00:28:46,758 --> 00:28:50,461 HAS ALREADY BEEN PROGRAMMED. 535 00:28:50,462 --> 00:28:52,695 SO MAYBE ALL ASPECTS OF OUR UNIVERSE 536 00:28:52,696 --> 00:28:56,465 CAN BE BROKEN DOWN INTO SIMPLE SUBPROGRAMS. 537 00:28:56,466 --> 00:29:01,171 BUT HOW COULD A SHORT MASTER PROGRAM CONTROL ALL OF THEM? 538 00:29:01,172 --> 00:29:04,974 JUERGEN BELIEVES IT ONLY TAKES ONE FINAL ACT 539 00:29:04,975 --> 00:29:07,409 OF DATA COMPRESSION. 540 00:29:07,410 --> 00:29:09,613 Schmidhuber: WE JUST WRITE A VERY SHORT PROGRAM 541 00:29:09,614 --> 00:29:13,283 WHICH LISTS ALL OUR POSSIBLE PROGRAMS, 542 00:29:13,284 --> 00:29:15,184 STARTING WITH THE SHORTEST. 543 00:29:15,185 --> 00:29:17,887 AND THE ENTIRE LIST OF PROGRAMS IS VERY EASY TO GENERATE. 544 00:29:17,888 --> 00:29:20,557 AND THEN, THIS MASSIVE PROGRAM ALLOCATES 545 00:29:20,558 --> 00:29:22,826 RUN TIME TO EACH OF THESE 546 00:29:22,827 --> 00:29:25,864 SUCH THAT ALL OF THEM GET A SHARE OF THE TOTAL RUN TIME. 547 00:29:27,865 --> 00:29:29,934 Freeman: IT'S HARD NOT TO FEEL INSIGNIFICANT 548 00:29:29,935 --> 00:29:32,569 IF WE'RE ALL JUST BITS OF COMPUTER CODE, 549 00:29:32,570 --> 00:29:34,137 BUT JUERGEN BELIEVES IT ACTUALLY 550 00:29:34,138 --> 00:29:38,107 MAKES EACH OF US MORE IMPORTANT THAN EVER. 551 00:29:38,108 --> 00:29:41,377 Schmidhuber: IF YOU CHANGE A BIT OF THIS PROGRAM, 552 00:29:41,378 --> 00:29:44,580 MAYBE ALL OF THIS WOULD COMPLETELY DISAPPEAR. 553 00:29:44,581 --> 00:29:46,550 AND THE WHOLE UNIVERSE WILL BE VERY DIFFERENT. 554 00:29:46,551 --> 00:29:49,185 IN THAT SENSE, YOU CAN VIEW YOURSELF 555 00:29:49,186 --> 00:29:53,089 AS AN ESSENTIAL INGREDIENT OF THE ENTIRE UNIVERSE. 556 00:29:53,090 --> 00:29:56,659 IT WILL BE VERY DIFFICULT TO EDIT YOU OUT OF IT 557 00:29:56,660 --> 00:29:58,662 BECAUSE THE ONLY WAY OF GETTING RID OF YOU 558 00:29:58,663 --> 00:30:01,898 IS TO MAKE THE WHOLE THING MORE COMPLEX. 559 00:30:01,899 --> 00:30:05,601 Freeman: IF EVERYTHING IN OUR UNIVERSE IS MADE FROM COMPUTER CODE, 560 00:30:05,602 --> 00:30:08,672 THEN THE FUNDAMENTAL BUILDING BLOCKS OF OUR EXISTENCE 561 00:30:08,673 --> 00:30:12,375 ARE INFORMATION INSTEAD OF MATTER. 562 00:30:12,376 --> 00:30:16,680 IF SO, CAN WE FIND THOSE BITS AND BYTES OF REALITY? 563 00:30:16,681 --> 00:30:20,085 ONE PHYSICIST CLAIMS TO HAVE DONE JUST THAT. 564 00:30:24,589 --> 00:30:28,125 WHAT FORMS THE FOUNDATION OF OUR REALITY? 565 00:30:28,126 --> 00:30:31,194 IF YOU COULD LOOK DEEP INSIDE EVERY ATOM 566 00:30:31,195 --> 00:30:33,696 AND EVERY RAY OF SUNSHINE, 567 00:30:33,697 --> 00:30:36,300 YOU'D FIND FUNDAMENTAL PARTICLES, 568 00:30:36,301 --> 00:30:40,502 THE BUILDING BLOCKS OF MATTER AND ENERGY. 569 00:30:40,503 --> 00:30:43,473 BUT WHAT ARE THEY MADE OF? 570 00:30:43,474 --> 00:30:45,142 COULD THE BUILDING BLOCKS OF REALITY 571 00:30:45,143 --> 00:30:49,548 BE SIMPLY BITS OF INFORMATION? 572 00:30:54,085 --> 00:30:57,822 THEORETICAL PHYSICIST JIM GATES AT THE UNIVERSITY OF MARYLAND 573 00:30:57,823 --> 00:31:00,022 INVESTIGATES THE PHYSICS AND MATHEMATICS 574 00:31:00,023 --> 00:31:03,726 OF THE FUNDAMENTAL PARTICLES IN OUR UNIVERSE. 575 00:31:03,727 --> 00:31:05,561 Gates: WELL, YOU SEE, WE PHYSICISTS, 576 00:31:05,562 --> 00:31:08,364 YOU COULD CALL US A COMPANY CALLED EQUATIONS "R" US 577 00:31:08,365 --> 00:31:09,767 BECAUSE WHAT WE REALLY DO 578 00:31:09,768 --> 00:31:12,001 IS WRITE EQUATIONS THAT DESCRIBE NATURE, 579 00:31:12,002 --> 00:31:13,970 AND THEN USE THOSE TO MAKE PREDICTIONS ABOUT THINGS 580 00:31:13,971 --> 00:31:15,405 THAT NO ONE HAS EVER FOUND 581 00:31:15,406 --> 00:31:18,441 OR SEEN OR EVEN DREAMED OF BEFORE. 582 00:31:18,442 --> 00:31:20,844 Freeman: JIM INVESTIGATES HOW THE FUNDAMENTAL PARTICLES 583 00:31:20,845 --> 00:31:23,581 OF THE UNIVERSE INTERACT WITH EACH OTHER. 584 00:31:23,582 --> 00:31:26,549 BECAUSE HE IS A PROPONENT OF THE CONTROVERSIAL CONCEPT 585 00:31:26,550 --> 00:31:28,886 CALLED STRING THEORY, 586 00:31:28,887 --> 00:31:33,557 JIM OFTEN FINDS HIMSELF SELLING HIS IDEAS TO SKEPTICS. 587 00:31:33,558 --> 00:31:37,295 STRING THEORY INCLUDES AT LEAST 10 DIMENSIONS OF SPACE 588 00:31:37,296 --> 00:31:40,496 AND MANY PARTICLES THAT HAVE NOT YET BEEN DISCOVERED. 589 00:31:40,497 --> 00:31:44,634 IT'S ALL BASED ON SOME VERY COMPLICATED MATH. 590 00:31:44,635 --> 00:31:46,938 I FOUND SOME VERY PUZZLING SIGNS THAT, 591 00:31:46,939 --> 00:31:49,205 BURIED IN THE EQUATIONS THAT I WAS STUDYING, 592 00:31:49,206 --> 00:31:51,008 THERE WAS ANOTHER SET OF EQUATIONS. 593 00:31:51,009 --> 00:31:53,178 WE DISCUSSED THIS WITH SOME MATHEMATICIANS, 594 00:31:53,179 --> 00:31:56,847 AND TO OUR GREAT DISAPPOINTMENT, THE REACTION OF MATHEMATICIANS 595 00:31:56,848 --> 00:32:00,685 WERE, "WHAT IN THE WORLD ARE YOU TALKING ABOUT?" 596 00:32:03,253 --> 00:32:06,522 Freeman: TO MAKE THE EQUATIONS EASIER TO UNDERSTAND, 597 00:32:06,523 --> 00:32:09,425 JIM TURNED THEM INTO GEOMETRY. 598 00:32:09,426 --> 00:32:12,861 HE REPRESENTED THE INTERACTIONS BETWEEN SUBATOMIC PARTICLES 599 00:32:12,862 --> 00:32:16,265 AS SPECIFIC, THREE DIMENSIONAL SHAPES. 600 00:32:16,266 --> 00:32:19,235 HE CALLED THE STRUCTURES ADINKRAS. 601 00:32:19,236 --> 00:32:20,771 THE NAME IS DERIVED 602 00:32:20,772 --> 00:32:25,540 FROM A WEST AFRICAN SYMBOL USED TO REPRESENT ABSTRACT CONCEPTS. 603 00:32:25,541 --> 00:32:27,377 I COULD HAVE MY EQUATIONS 604 00:32:27,378 --> 00:32:29,011 THAT I UNDERSTAND IN THE WAY THAT I DO, 605 00:32:29,012 --> 00:32:31,380 BUT I CAN PUT IT IN FRONT OF A MATHEMATICIAN AND ASK, 606 00:32:31,381 --> 00:32:33,015 "WHAT IS IT THAT YOU SEE HERE?" 607 00:32:33,016 --> 00:32:35,184 THEY WILL BEGIN TO TELL ME A DIFFERENT STORY, 608 00:32:35,185 --> 00:32:36,886 AND THAT'S THE POWER OF COLLABORATION. 609 00:32:36,887 --> 00:32:39,356 AND THAT'S WHAT STARTED HAPPENING WITH US. 610 00:32:39,357 --> 00:32:42,125 Freeman: JIM COLLABORATED WITH PHYSICISTS AND MATHEMATICIANS 611 00:32:42,126 --> 00:32:44,862 TO EXAMINE HOW THE PARTS OF AN ADINKRA STRUCTURE 612 00:32:44,863 --> 00:32:46,663 RELATE TO EACH OTHER. 613 00:32:46,664 --> 00:32:49,532 BURIED WITHIN THE CONVOLUTED CALCULATIONS, 614 00:32:49,533 --> 00:32:52,769 JIM FOUND SOMETHING THAT LOOKED FAMILIAR. 615 00:32:52,770 --> 00:32:56,406 IT LOOKED LIKE COMPUTER CODE. 616 00:32:56,407 --> 00:32:59,876 IT TURNS OUT THAT EXPRESSING THE RELATIONSHIP BETWEEN THEM 617 00:32:59,877 --> 00:33:03,012 IS EASIEST IF YOU USE ONES AND ZEROES. 618 00:33:03,013 --> 00:33:05,382 THESE ARE CALLED BITS IN COMPUTER SCIENCE. 619 00:33:05,383 --> 00:33:08,552 I KNOW OF NO OTHER EXAMPLE IN THE KINDS OF EQUATIONS 620 00:33:08,553 --> 00:33:10,720 THAT DESCRIBE FUNDAMENTAL SCIENCE 621 00:33:10,721 --> 00:33:11,988 WHERE BITS HAVE OCCURRED. 622 00:33:11,989 --> 00:33:13,556 AND EVEN MORE REMARKABLY, 623 00:33:13,557 --> 00:33:15,459 WE HAVE FOUND THAT THE BITS IN OUR EQUATIONS 624 00:33:15,460 --> 00:33:19,663 ARRANGED THEMSELVES INTO ERROR CORRECTING CODES, 625 00:33:19,664 --> 00:33:22,166 SOMETHING THAT MAKES YOUR BROWSER WORK EVERY DAY. 626 00:33:24,368 --> 00:33:26,002 Freeman: WHEN YOU SURF THE WEB 627 00:33:26,003 --> 00:33:29,271 OR USE ANY FORM OF DIGITAL COMMUNICATION, 628 00:33:29,272 --> 00:33:31,674 CRUCIAL ONES OR ZEROES 629 00:33:31,675 --> 00:33:35,579 ARE INEVITABLY LOST IN THE TRANSMISSION. 630 00:33:35,580 --> 00:33:38,915 ERROR CORRECTING CODES FILL IN THE DROPPED BITS. 631 00:33:38,916 --> 00:33:40,951 THEY PROTECT DATA FROM CORRUPTION 632 00:33:40,952 --> 00:33:44,820 AND PREVENT COMPUTER PROGRAMS FROM CRASHING. 633 00:33:44,821 --> 00:33:47,357 JIM BELIEVES THE ERROR CORRECTING CODES 634 00:33:47,358 --> 00:33:49,926 HE DISCOVERED WORK IN THE SAME WAY, 635 00:33:49,927 --> 00:33:55,397 TO MAINTAIN THE STABILITY OF SUBATOMIC INTERACTIONS. 636 00:33:55,398 --> 00:33:57,033 WITHOUT THIS ERROR CORRECTION, 637 00:33:57,034 --> 00:34:00,403 THE WAY FUNDAMENTAL PARTICLES INTERACT COULD BE CORRUPTED, 638 00:34:00,404 --> 00:34:03,641 LIKE A COMPUTER CRASH ON A UNIVERSAL SCALE. 639 00:34:05,543 --> 00:34:07,278 Gates: THEN YOU CAN ASK, "WELL, GEE. 640 00:34:07,279 --> 00:34:09,946 DOES THAT MEAN THAT SOMEHOW OUR UNIVERSE 641 00:34:09,947 --> 00:34:13,015 IS LIKE A BIG COMPUTER SIMULATION?" 642 00:34:13,016 --> 00:34:14,450 Freeman: THE IDEA THAT NATURE 643 00:34:14,451 --> 00:34:18,521 MIGHT USE ERROR CORRECTION CODES AT FIRST SEEMED WRONG TO JIM, 644 00:34:18,522 --> 00:34:21,624 BUT HE SOON FOUND ANOTHER EXAMPLE. 645 00:34:21,625 --> 00:34:23,628 Gates: IT TURNS OUT THERE'S ONE PIECE OF NATURAL SCIENCE 646 00:34:23,629 --> 00:34:26,897 IN WHICH THIS DISCUSSION HAS BEEN GOING ON FOR DECADES. 647 00:34:26,898 --> 00:34:28,600 IT'S GENETICS. 648 00:34:32,837 --> 00:34:34,370 Freeman: IN THE HUMAN BODY, 649 00:34:34,371 --> 00:34:38,374 ERROR CORRECTING CODES ALLOW US TO STAY HEALTHY AND STRONG. 650 00:34:38,375 --> 00:34:42,678 THE CODES ACT TO STABILIZE THE GENOME. 651 00:34:42,679 --> 00:34:44,680 Freeman: GENETIC ERROR CORRECTING CODES 652 00:34:44,681 --> 00:34:48,051 ENSURE THAT CELLS COPY THEMSELVES ACCURATELY 653 00:34:48,052 --> 00:34:50,854 THROUGHOUT AN ORGANISM'S LIFETIME. 654 00:34:50,855 --> 00:34:54,990 THINK OF THE DNA REPLICATING ITSELF WHILE A CELL DIVIDES 655 00:34:54,991 --> 00:34:58,528 AS BEING LIKE A FIGHTER TRYING TO STAY STRONG AND STABLE 656 00:34:58,529 --> 00:35:00,763 DURING A ROUND IN THE RING. 657 00:35:00,764 --> 00:35:02,464 Gates: WE CAN IMAGINE THAT, 658 00:35:02,465 --> 00:35:05,301 IF OUR FIGHTER DOESN'T HAVE ERROR CORRECTING CODES, 659 00:35:05,302 --> 00:35:08,740 THE FIRST THING THAT HAPPENS IS ONE OF HIS ARMS STOPS WORKING. 660 00:35:12,110 --> 00:35:15,380 NEXT, HIS LEGS STOP WORKING. 661 00:35:17,848 --> 00:35:20,716 THEN HIS EYES FAIL. 662 00:35:20,717 --> 00:35:23,185 WITHOUT ERROR CORRECTING CODES, 663 00:35:23,186 --> 00:35:27,022 HE IS QUICKLY DETERIORATING, STRUGGLING TO SURVIVE. 664 00:35:27,023 --> 00:35:28,758 THERE IS NO STABILITY, 665 00:35:28,759 --> 00:35:31,261 AND HE COULD COLLAPSE AT ANY MOMENT. 666 00:35:37,166 --> 00:35:40,970 NOW, A FIGHTER EQUIPPED WITH ERROR CORRECTING CODES 667 00:35:40,971 --> 00:35:44,240 WILL EVENTUALLY ALSO DETERIORATE. 668 00:35:44,241 --> 00:35:48,444 HOWEVER, THE ERROR CORRECTING CODES ACT TO SUSTAIN VIGOR 669 00:35:48,445 --> 00:35:50,946 FOR A MUCH LONGER TIME. 670 00:35:50,947 --> 00:35:53,450 Freeman: WHEN BAD COPIES OF GENES GET MADE, 671 00:35:53,451 --> 00:35:58,521 THE RESULTS CAN BE CELL DEATH OR MALFUNCTIONS LIKE CANCER. 672 00:35:58,522 --> 00:36:02,725 GENETIC ERROR CORRECTION REDUCES THE COPY FAILURE RATE 673 00:36:02,726 --> 00:36:05,060 TO LESS THAN ONE IN A BILLION. 674 00:36:05,061 --> 00:36:07,497 AND THIS IS AN ANALOGY FOR THE ROLE 675 00:36:07,498 --> 00:36:09,999 THAT ERROR CORRECTING CODES COULD PLAY IN THE STRUCTURE 676 00:36:10,000 --> 00:36:12,169 OF SOMETHING LIKE OUR UNIVERSE. 677 00:36:12,170 --> 00:36:14,305 Freeman: OUR UNIVERSE HAS BEEN RUNNING SMOOTHLY 678 00:36:14,306 --> 00:36:17,506 FOR ALMOST 14 BILLION YEARS. 679 00:36:17,507 --> 00:36:19,910 MAYBE IT HAS LASTED THAT LONG 680 00:36:19,911 --> 00:36:21,845 THANKS TO ERROR CORRECTING CODES, 681 00:36:21,846 --> 00:36:24,379 CODES THAT MAKE SURE THE FUNDAMENTAL PARTICLES 682 00:36:24,380 --> 00:36:27,484 IN OUR COSMOS DON'T GO HAYWIRE. 683 00:36:31,689 --> 00:36:33,456 BUT NOTHING LASTS FOREVER. 684 00:36:33,457 --> 00:36:36,426 EVENTUALLY, OUR UNIVERSE WILL BEGIN TO AGE. 685 00:36:36,427 --> 00:36:38,927 ERRORS WILL CREEP IN, AND IT WILL DIE. 686 00:36:38,928 --> 00:36:41,163 OR WHAT IF THE CODES JIM DISCOVERED 687 00:36:41,164 --> 00:36:43,400 REALLY ARE COMPUTER GENERATED? 688 00:36:43,401 --> 00:36:45,835 WHOEVER PROGRAMMED THE COSMOS 689 00:36:45,836 --> 00:36:48,839 COULD DECIDE TO PULL THE PLUG AT ANY MOMENT. 690 00:36:48,840 --> 00:36:52,410 MAYBE IT'S TIME TO CREATE OUR OWN UNIVERSE. 691 00:36:55,600 --> 00:37:00,505 IS OUR UNIVERSE A NATURAL ONE OR ARTIFICIAL? 692 00:37:00,506 --> 00:37:03,474 EITHER WAY, IT CAN'T LAST FOREVER. 693 00:37:03,475 --> 00:37:08,979 SO, IS THERE ANYTHING WE CAN DO TO SAVE OURSELVES? 694 00:37:08,980 --> 00:37:13,718 PERHAPS WE NEED TO DESIGN OUR OWN NEW UNIVERSE 695 00:37:13,719 --> 00:37:15,488 AND MOVE THERE. 696 00:37:18,323 --> 00:37:22,994 PHILOSOPHER CLEMENT VIDAL OF THE FREE UNIVERSITY IN BRUSSELS 697 00:37:22,995 --> 00:37:27,932 BELIEVES WE NEED TO TAKE CONTROL OF OUR COSMIC DESTINY. 698 00:37:27,933 --> 00:37:31,202 Vidal: IT'S ALMOST CERTAIN THAT OUR UNIVERSE WILL END. 699 00:37:31,203 --> 00:37:34,072 SO, SHOULD WE ACCEPT THIS AS A BLUNT FACT? 700 00:37:34,073 --> 00:37:35,941 I DON'T BELIEVE SO. 701 00:37:35,942 --> 00:37:37,842 I THINK WE SHOULD DO SOMETHING ABOUT IT. 702 00:37:37,843 --> 00:37:41,177 AND IF WE TAKE INSPIRATION FROM BIOLOGY, 703 00:37:41,178 --> 00:37:42,747 WHICH IS TO REPRODUCE, 704 00:37:42,748 --> 00:37:46,284 SO MAYBE WE SHOULD REPRODUCE THE UNIVERSE. 705 00:37:46,285 --> 00:37:47,952 Freeman: WE ALL WANT A BETTER LIFE, 706 00:37:47,953 --> 00:37:50,153 A BETTER HOME FOR OUR KIDS. 707 00:37:50,154 --> 00:37:53,557 AND CLEMENT BELIEVES WE MAY ONE DAY 708 00:37:53,558 --> 00:37:57,462 BE ABLE TO GIVE OUR DESCENDANTS A BETTER UNIVERSE AS WELL. 709 00:38:00,466 --> 00:38:04,269 IT'S A BIG PROJECT, TO SAY THE LEAST. 710 00:38:04,270 --> 00:38:07,539 ACCORDING TO CLEMENT, WE'LL HAVE TO PRACTICE FIRST 711 00:38:07,540 --> 00:38:12,110 BY BUILDING VIRTUAL, COMPUTER SIMULATED UNIVERSES. 712 00:38:12,111 --> 00:38:13,912 Vidal: IN ANY ENGINEERING PROJECT, 713 00:38:13,913 --> 00:38:17,883 YOU START BY MAKING A SIMULATION OF WHAT YOU WANT TO BUILD. 714 00:38:17,884 --> 00:38:19,150 SO I IMAGINE THAT, 715 00:38:19,151 --> 00:38:21,619 IN THE FAR FUTURE, AN ADVANCED CIVILIZATION 716 00:38:21,620 --> 00:38:26,090 WOULD WANT TO EXPLORE THE SPACE OF POSSIBLE UNIVERSES 717 00:38:26,091 --> 00:38:29,360 AND THEN SELECT THE UNIVERSE THEY WANT TO BUILD. 718 00:38:29,361 --> 00:38:31,528 ONE OF THE MOST IMPORTANT THINGS WE NEED TO LEARN 719 00:38:31,529 --> 00:38:35,700 IS HOW OUR UNIVERSE CAME TO BE FINE TUNED FOR LIFE, 720 00:38:35,701 --> 00:38:40,371 AND SIMULATIONS CAN HELP US TO LEARN THAT. 721 00:38:40,372 --> 00:38:43,039 Freeman: WHEN THE SIMULATIONS ARE DONE 722 00:38:43,040 --> 00:38:46,977 AND WE'RE READY TO BUILD A NEW HOME FOR OUR DESCENDANTS, 723 00:38:46,978 --> 00:38:54,218 WE'LL NEED ONE MORE THING... A COLOSSAL SOURCE OF ENERGY. 724 00:38:54,219 --> 00:38:56,621 Vidal: THE MAKING OF A NEW UNIVERSE 725 00:38:56,622 --> 00:39:00,258 WILL MOST LIKELY RESEMBLE ANOTHER BIG BANG. 726 00:39:00,259 --> 00:39:02,695 SO THE ENERGIES WOULD BE VERY HIGH, 727 00:39:02,696 --> 00:39:04,796 AND TO MAKE THIS NEW UNIVERSE, 728 00:39:04,797 --> 00:39:07,398 WE'D BE DISCONNECTED FROM OUR OWN, 729 00:39:07,399 --> 00:39:12,537 WHICH MEANS THAT IT WILL HAVE A NEW SPACE TIME STRUCTURE. 730 00:39:12,538 --> 00:39:16,073 Freeman: MAKING THE BIG BANG MAY SOUND IMPOSSIBLE, 731 00:39:16,074 --> 00:39:20,445 BUT CLEMENT BELIEVES A SPECIAL TYPE OF BINARY STAR SYSTEM 732 00:39:20,446 --> 00:39:23,014 COULD PROVIDE THE NEEDED ENERGY. 733 00:39:23,015 --> 00:39:25,249 SUPERMASSIVE STARS, SUCH AS WHITE DWARVES 734 00:39:25,250 --> 00:39:29,220 AND NEUTRON STARS, HAVE ENORMOUS GRAVITATIONAL PULL. 735 00:39:29,221 --> 00:39:31,021 IF ANOTHER STAR IS CLOSE ENOUGH, 736 00:39:31,022 --> 00:39:33,825 THE MORE MASSIVE STAR SUCKS IN THE ENERGY 737 00:39:33,826 --> 00:39:35,959 FROM THE COMPANION STAR. 738 00:39:35,960 --> 00:39:38,896 CLEMENT BELIEVES WE COULD HARNESS 739 00:39:38,897 --> 00:39:41,633 THIS ENORMOUS CONCENTRATION OF ENERGY. 740 00:39:45,103 --> 00:39:48,472 THINK OF IT AS AN INCREDIBLY SCALED UP VERSION 741 00:39:48,473 --> 00:39:53,077 OF A RENEWABLE ENERGY PLANT. 742 00:39:53,078 --> 00:39:56,113 THESE WOOD PELLETS ARE CONVERTED INTO ELECTRICITY 743 00:39:56,114 --> 00:39:58,215 AT THIS BIOMASS PLANT. 744 00:39:58,216 --> 00:40:02,521 IN A SIMILAR WAY, THE ENERGY OF A COMPANION STAR 745 00:40:02,522 --> 00:40:05,657 IS CONVERTED INTO A DENSER FORM OF ENERGY, 746 00:40:05,658 --> 00:40:09,659 INTO WHITE DWARVES AND NEUTRON STARS. 747 00:40:09,660 --> 00:40:15,333 Freeman: IMAGINE THIS POWER PLANT IS THE SIZE OF A NEUTRON STAR, 748 00:40:15,334 --> 00:40:17,168 AND THESE PELLETS ARE BEING HARVESTED 749 00:40:17,169 --> 00:40:20,771 FROM ANOTHER NEARBY STAR. 750 00:40:20,772 --> 00:40:22,173 THEY ARE SO DENSE 751 00:40:22,174 --> 00:40:26,544 THAT A SINGLE PELLET WOULD WEIGH MORE THAN MOUNT EVEREST. 752 00:40:26,545 --> 00:40:28,713 CLEMENT THINKS IF WE CAN USE 753 00:40:28,714 --> 00:40:32,450 THAT ENORMOUS CONCENTRATION OF MATTER AND ENERGY, 754 00:40:32,451 --> 00:40:36,988 WE'LL HAVE THE POWER TO CHANGE THE FABRIC OF THE UNIVERSE. 755 00:40:36,989 --> 00:40:39,624 WELL, TO CREATE A NEW UNIVERSE, PRESUMABLY, 756 00:40:39,625 --> 00:40:43,929 YOU WOULD HAVE TO MANIPULATE THE STRUCTURE OF SPACETIME. 757 00:40:43,930 --> 00:40:48,865 AND THIS SPACETIME BECOMES, IN SOME THEORIES, 758 00:40:48,866 --> 00:40:53,671 MALLEABLE AT VERY HIGH DENSITIES. 759 00:40:53,672 --> 00:40:57,374 Freeman: COULD WE SOMEDAY HARNESS THE ENERGY OF SUPER DENSE STARS 760 00:40:57,375 --> 00:41:02,445 TO MANIPULATE SPACETIME AND CREATE OUR OWN BIG BANG? 761 00:41:02,446 --> 00:41:06,584 CLEMENT'S THEORY OF UNIVERSE CREATION IS FAR FROM MAINSTREAM, 762 00:41:06,585 --> 00:41:10,923 BUT HE HOPES THAT SOMEDAY HIS CONCEPT WILL BE TESTED. 763 00:41:12,056 --> 00:41:15,358 I'M CONFIDENT THAT A TEST CAN BE DEVISED BECAUSE WE HAVE PLENTY 764 00:41:15,359 --> 00:41:19,363 OF DATA ABOUT THOSE INTERACTING BINARY STAR SYSTEMS. 765 00:41:19,364 --> 00:41:22,599 SO WE JUST NEED TO... TO THINK CREATIVELY 766 00:41:22,600 --> 00:41:27,771 AND SCIENTIFICALLY ABOUT HOW TO TEST THE HYPOTHESIS. 767 00:41:27,772 --> 00:41:29,106 Freeman: THE FIRST TESTS 768 00:41:29,107 --> 00:41:32,977 WILL NO DOUBT BE DONE THROUGH COMPUTER SIMULATIONS. 769 00:41:32,978 --> 00:41:34,945 PERHAPS SOME OTHER CIVILIZATION, 770 00:41:34,946 --> 00:41:36,947 MORE ADVANCED THAN OURS, 771 00:41:36,948 --> 00:41:41,785 IS ALREADY CONDUCTING THESE TESTS WITH US. 772 00:41:41,786 --> 00:41:44,755 ARE WE LIVING IN A UNIVERSE CREATED BY SOMEONE 773 00:41:44,756 --> 00:41:47,592 OR SOMETHING ELSE? 774 00:41:47,593 --> 00:41:50,461 IF SO, IS IT A BETA VERSION 775 00:41:50,462 --> 00:41:54,130 THAT AN ADVANCED ENTITY IS STILL TINKERING WITH, 776 00:41:54,131 --> 00:41:57,802 OR IS IT A VERSION THEY'VE PROGRAMMED TO LAST? 777 00:42:04,576 --> 00:42:06,711 MAYBE SOMEDAY, 778 00:42:06,712 --> 00:42:10,314 WE'LL FIND PROOF THAT WE'RE ALL PLAYERS 779 00:42:10,315 --> 00:42:14,418 IN THE GREATEST VIDEO GAME EVER MADE. 780 00:42:14,419 --> 00:42:19,956 WOULD THAT KNOWLEDGE MAKE US FEEL MANIPULATED LIKE PAWNS? 781 00:42:19,957 --> 00:42:22,726 OR WOULD IT FREE US TO TAKE RISKS 782 00:42:22,727 --> 00:42:27,632 AND LIVE LIFE TO THE FULLEST BECAUSE NONE OF THIS IS REAL? 783 00:42:30,736 --> 00:42:35,438 EITHER WAY, WHETHER IT'S NATURAL OR ARTIFICIAL, 784 00:42:35,439 --> 00:42:39,443 LIFE IS A GLORIOUS GAME, 785 00:42:39,444 --> 00:42:41,346 AND WE SHOULD PLAY TO WIN. 63775

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