TRANSCRIPTIONEnglish

Why Shouldn't The Universe Exist?

56m 52s8,444 mots1,316 segmentsEnglish

TRANSCRIPTION COMPLÈTE

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you should not exist neither should your

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family or your neighbors or the person

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who served you in the supermarket

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earlier

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today the world should not exist there

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shouldn't be any great art or music

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there shouldn't be hunger or the horrors

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of War there shouldn't be any of it

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there shouldn't even be a

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universe let's begin at the beginning at

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the big bang and plausible and unlikely

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event a one in 10 to the 10 to the 123

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charts 10 to the 10 to the 123 is

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sometimes called the Penrose number

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named after the Nobel prize winning

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British physicist and mathematician sir

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Roger Penrose it measures the remarkable

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level of order and precision with which

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our universe was created order and

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precision are known to Decay over time

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you see it with the wires that lead into

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an old pair of headphones getting more

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and more Tangled As Time Goes By You See

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It in the crumbling ruins of an ancient

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city magnificent buildings carved

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thousands of years ago by our ancestors

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reduced to dust and Rubble by the

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passage of time penr knew that our

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universe should behave in the same way

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its order and precision decaying over

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time just like the cities of ancient

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Egypt China and meso America he knew

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that black holes were the crumbling

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ruins of the cosmos the place where

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everything ends up eventually where

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order and precision finally give way to

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the abyss there are about 10 to the

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power of 80 protons neutrons and other

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similar particles scattered across our

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universe still evading the abyss of

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black holes still Clinging On to their

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order and precision this makes our

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universe special like an ancient

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artifact that hasn't yet crumbled into

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dust and when he crunched the numbers

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Penrose realized that our universe must

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have been carved with a level of

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precision that just didn't make sense an

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incred incredibly low entropy a one in

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10 to the 10 to the

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123

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chance and this impossible number is not

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alone antimatter is like the mirror

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image of matter and when the two combine

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they destroy each other and although

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there are 10 the^ of 80 protons neutrons

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and other matter particles in the

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universe there were only a sprinkling of

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antiparticles but this is just as well

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if there had been an equal number of

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particles and antiparticles created in

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the Big Bang they would have annihilated

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each other out of existence almost

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instantly and yet there is nothing in

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our best models of the universe that

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seems to give enough of a preference for

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matter over

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antimatter in fact when we extrapolate

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the results of experiments it looks like

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the universe should have been born with

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an equal number everything should have

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been

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annihilated you and I should not

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exist the universe should not

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exist and

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yet it

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does but there is one prediction that

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worries physicists far more than the

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lack of antimatter or the remarkably

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ordered state in which the universe was

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born it is the weight of the

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universe when theoretical physicists put

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quantum mechanics alongside G relativity

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in a controllable way they find that the

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Universe should have bent itself into

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Oblivion within a moment of creation it

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should have been crushed by an

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overwhelming weight most of which

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doesn't come from the planets and stars

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that are sprinkled throughout the Galaxy

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but from empty space the

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vacuum our entire universe should have

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been crushed by the weight of

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nothing this is a mystery known as the

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cosmological constant problem and it has

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haunted

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physicists for nearly a 100

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years the James web space telescopes

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mirrors are aligned to about 10 nanom

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that is 1 10,000 the width of a human

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4:30

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5:06

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5:33

supporting educational content on

5:42

YouTube Julius Von mayor was a ship's

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Doctor Who served on expeditions to the

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Dutch East Indies in the middle of the

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19th century whenever a sailor took ill

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on one of the ships Von mayor would

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often resort to bloodletting this wasn't

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unusual bloodletting was a common

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practice at the time and in in this case

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it led Von mayor to make a

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groundbreaking discovery in the hot sun

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of Indonesia he noticed that the blood

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running through a sailor's veins was

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just as red as the blood running through

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their arteries back home in his native

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Germany where the weather was not so

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warm the blood running through the veins

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of his patients was always a little

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darker than the arterial blood this was

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he believed because it was lacking in

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oxygen which had been used in the slow

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combustion of food to help keep the

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patient warm

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in Indonesia the sailors were bathed in

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tropical Sunshine they didn't need to

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burn as much fuel to stay warm so their

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veins carried blood with higher levels

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of oxygen and appeared much redder in

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color Von mayor realized that the heat

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generated from the combustion of food in

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the body must be equivalent to the heat

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absorbed from the sun he realized that

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heat was just another form of

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energy

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but what is energy and what does this

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have to do with the weight of the

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universe or even the cosmological

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constant energy is the most precious

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commodity of all we need energy to power

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our vehicles to heat our homes to watch

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videos on YouTube and as Von mayor

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realized it comes in many different

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forms in the 18th century early

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industrialists were looking for ways to

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convert trapped energy into useful work

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that could power their machines that is

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what energy is stuff that we can convert

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into work oldfashioned water wheels

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store potential energy by lifting a

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heavy bucket of water up high before

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allowing it to fall converting the

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energy into useful kinetic energy the

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energy of motion the steam engines of

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the Industrial Revolution took the

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chemical energy stored in coal converted

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that into heat before once again

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creating motion and it was Einstein who

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came to realize that mass was also

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another form of energy and to understand

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why we need to remember the cosmic speed

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limit the speed of

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light nothing can go faster than the

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speed of light which is about

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299,792,458

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m/s this limit applies to everything to

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the speed of a bullet or a particle

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whizzing around a collider it even

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applies to Usain Bolt the legendary

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Jamaican sprinter of course despite his

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remarkable Talent bolt never managed to

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get anywhere near the speed of light but

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what if he had what if there were a

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supercharged version of Usain Bolt

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