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Download "Voyage dans l'espace-temps - S04E07 - Le libre arbitre"

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Le libre arbitre
Voyage dans l'espace-temps
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00:00:02
all at the mercy of our biological programming
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our actions perhaps do not determine
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our future
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and if the future could change the past
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is free will just illusory or does it really exist
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and
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space time the essence of life
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the secrets of the cosmos it is found
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within the holes of glass
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and
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according to the ancient Greeks the path
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of each and traced at his birth in
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while we do we
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cannot escape the destiny that the gods have
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chosen for us free will is
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an illusion
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today some scientists
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prove them right our destinies are
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really ready determined speaks to us
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not by the will to be celestial but by
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the workings of our brain and the laws
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fundamentals that govern time and
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space
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free will do we exist are we
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not just puppets hanging on
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invisible strings
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one day when I was in primary school
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I got into trouble I went
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out running out of the classroom
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and ran straight into a teacher
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who then introduced me to my first
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drama teacher in class just
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like that it was the start of my
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acting career things could have gone
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wrong differently or were his
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grids the answer may be found
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in the heavens
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like many athletes
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dennis schaeffer wants to know what makes
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his opponents advance
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psychology researchers at ohio state university
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they find answers to his
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questions in fact it studies the
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hidden forces which control the way
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we move
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I started by studying how
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baseball fielders catch
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balmont then my interest
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in visual perception and sport
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led me to study how people
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orient themselves in their environment
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few of us are aware of the
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underlying mechanisms that guide our
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behavior we are not aware of
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most of the means used to
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catch a pitch a
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baseball for example the place where I
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place my flag thrown so I
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position my glove to catch the
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ball it is very important
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to automate as many processes as
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possible you spend less time
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he was consciously thinking about trying to
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remind you what you are supposed to
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do we like to think that our
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conscience has the final say on our
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actions
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but is it really what decides what
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you think you are doing corresponds
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to what you actually do
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knicks and his students developed
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an experiment to find out
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they installed nine cameras to
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follow the movements of a man, a
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woman and a dog direct there a little
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more towards the field where they will run
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in turn they will try to catch
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a frisbee
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to do this all adopt
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different strategies that of jason
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rests on speed and that I have the
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frisbee have seen my game slows down or
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speeds up by conceding Thursday plans to
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run parallel to the frisbee I have
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done to stay under the frisbee during
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my race to be able to catch it
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as it begins its descent
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merlin the dog
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probably didn't think of a
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strategy
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[Music]
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using the data collected by the
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cameras dennis reports the movements
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of the guinea pigs and their targets
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he chooses a place in
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the background as a reference point
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then represents the trajectory of the
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frisbee as it appears for the
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three subjects a familiar pattern emerges
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we have here a view of the frisbee from
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the perspective of the one who covers
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seizures we see the frisbee rising in
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relation to the 'background then they
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move relatively in a straight line at
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constant speed until the
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subject is close enough to
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catch it
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we can see it no matter what the
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three subjects and believe they are doing all
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follow the same path
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it' is what dennis observed test to
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treat is the most surprising in these
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results is that to catch
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friezes bed the dogs use the same
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strategy as the field players to
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catch the mountain balls this shows
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that the mechanisms underlying
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the origin of our behavior is
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universal it is not specifically
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linked nor to the species is the target it
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can be a ball a frisbee or
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something else when you try to catch an
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object in mid-flight you believe that it it is
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you who was in command but below the
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conscious level your body executes
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dozens of programs which control or
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your actions we think we control and
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consciously our movements
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but this is not the case
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we are not master of our actions when
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we pursue a target we can think we are
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good at that and in fact if we are bad
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it is because our consciousness does
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not coincide with the guy mechanisms
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in our behavior when we
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intercept objects in place
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and
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imagine having to consciously control
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all the muscles that are necessary to move close
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not take a breath
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eat or digest your brain is
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capable of accomplishing simultaneously all
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this age and more without demanding your
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attention but on all the actions that we
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think consciously decided to do
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how many are in reality automatic and
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predetermined and it is the idea that we
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control our decisions was only
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illusory
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until recently john dill anaïs a
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neuroscientist based in berlin is
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said to have refuted this idea
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then he began to examine
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people's brains in search of the roots of
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free will these discoveries have called into question
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all these considerations about his life
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simone human beings have the tendencies
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to be that they are worth and he sees the body
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and the mind as two independent entities
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recent brain imaging seems to
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indicate an objective correlation between
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what is happening in our island we are
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in our body
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today john is going to give
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dennis a brain mri a series of three
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random letters will appear on the screen
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dennis react to these series of letters by
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pressing a red button with his
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left hand osama right c It's up to him to decide
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the reins will show when they
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decide to press the button and a
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computer will record the exact moment
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when he presses you am the only subject
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realizes attachment to this is what he sees on
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the screen the sequences to be there for a
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moment he can decide to press the
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button on the left or on the right
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he must tell us that it is treated on
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the screen when he has done his show there the
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subject sees the ex scroll by has not not yet
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made up his mind he has made he must
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tell us which letter is on the screen when
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he has made up his mind
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brain imaging shows one
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after the other that dennis has decided
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to press the right or left button
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approximately a second before he does it
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but another type of unconscious brain activity
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appears long before he
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consciously makes his decision if
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you see the images there the
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decision making takes place here in the
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prefrontal cortex and in this region of the
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parietal lobe median the formation seems to
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stay here for a few seconds
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then it moves into the
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additional useful motor areas here
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from there it goes into the motor cortex which
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directly controls our movements
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there is therefore a whole sequence of state
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first the activity to conscious in these
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zones this is then the
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conscious activity in denser and other
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regions
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dennis is supposed to make a decision at
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random but it turns out that ten seconds
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before he decides to press the
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button his subconscious has already made his
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choice
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we thought that when you make a
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decision you are free to choose between this
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or that option but if your brain
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has already activated and started to
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prepare your choice this suggests that
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decision making is just an illusion
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in reality it is your
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inner cerebral activity at this moment that it has
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determined we can make decisions
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but we can only choose what our
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unconscious has already decided for us that
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yes so yes we control our
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decisions but only in one way
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already ready way determined by the
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behavior of our server john admits
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that it is not easy to test
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important decisions like getting married or
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buying a house from
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brain imaging but at least for him the
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inevitable conclusion drawn from
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experience and that it is not us who
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govern by countering a decision we have
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the impression of being completely free
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to choose various options having
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experience shows that this idea is
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an illusion we are not free to take such or
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such a decision we are already very
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programmed by our cerebral activity
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which is going to happen and already obvious to
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a certain extent we are running after
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an illusion is
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free will only a fantasy
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according to this neuroscientist it is
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reductive to not see in us that automatisms
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if we see further we can
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find an exit door leading to freedom
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and
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and
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two thousand five hundred years
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an Indian by the name of Siddharta Gautama
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pauses the idea of ​​a purchase or not is a
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notion according to which our brain and
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our body are only a combination
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of physical parts that the evening is an
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illusion which emerges from the functioning of
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all its parts together
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another acid art name has been given to that of
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awakened Buddha his vision of things
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is remarkably close to that of the
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neuroscientists and current but gaza
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ni gar is called the father of
00:10:28
cognitive neuroscience
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after exploring the functioning of the
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brain for four decades he
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came to the conclusion that
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inner care is neither more nor less than the
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product of electrical impulses
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passing through the tissue moans nothing
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more nothing less
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it is the brain which produces our
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mental life on that no doubt it
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comes from this thing not the relationship between
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mental life and the pit which
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produced is interactive a metaphor
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could say understand this and the
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distinction between
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computer hardware and software the computer
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is nothing is useless without software
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it is the software that makes
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the computer work and produce
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this or that function
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an argument is that the brain is
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similar the mental and physical layers
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interact in one way or
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another to produce these wonders of
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consciousness and cognition
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so we are just machines and
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biological just that's the worst words
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just machines we are two
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fabulous but can machines,
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whether biological or mechanical,
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control destiny
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mike because yes we may be
00:11:36
full of automatisms but at a
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higher level of brain functions we
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are capable of making choices in
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complete freedom
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to understand this mike encourages us
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to observe man as a physicist
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observes nature as a set of
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complex systems that emerge from
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simple systems knowing how
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one level works does not
00:11:56
necessarily help in understanding
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another the concept of emergence designates the
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fact that we cannot start from a
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physical entity like water at one level
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of organization to explain another
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level of organization like the formation
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of waves in the ocean
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this implies a set of principles
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of a kind different and it is in
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no way by understanding water that you
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will be able to understand the formation and
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functioning of waves
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our brain with its multiple levels
00:12:21
is not an isolated system in reality it
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is like a car
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cars are machines made up
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of parts each with a very
00:12:30
specific function but everything together forms a
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complete system but cars
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are not made to be isolated objects
00:12:39
[Music]
00:12:44
they are supposed to share the road with
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other vehicles
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just like our brains are designed to
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interact with others and for mike
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it is at this level that free
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will exists and
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individual responsibility emerges
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if you were alone in the world the concept
00:13:00
of individual responsibility
00:13:01
would not exist what would that
00:13:03
mean no one to report to accounts
00:13:07
my individual responsibility but
00:13:09
interactions that take place conciliar
00:13:11
more than one person each time we
00:13:14
make a decision our choice has repercussions on
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the example around us and it then we
00:13:19
the words and if we do not respect
00:13:20
the rules of society
00:13:21
we may not have many
00:13:23
options but we are responsible
00:13:25
for our actions and no system works
00:13:30
these parties must be able to be held
00:13:31
responsible for their action we
00:13:33
obey a set of rules but
00:13:35
we are free to make choice
00:13:37
within its limits or arms us to
00:13:39
ignore them completely
00:13:44
[Music]
00:13:45
freedom if the son becomes informed the more he
00:13:48
becomes always more intelligent and
00:13:50
wiser in order to adapt to the world
00:13:52
around us
00:13:53
this is how 'we can define
00:13:55
freedom but for that we need
00:13:58
this beautiful machine mechanism that
00:14:00
accomplishes all these pretty
00:14:03
cool things but what happens when
00:14:06
we go beyond the stage of
00:14:08
individual interactions and move to the
00:14:10
next level, that of behavior mass
00:14:14
science of a new kind reveals
00:14:16
that our societies obey rules
00:14:18
as predictable as those governing the
00:14:21
movement of dishes but extend to
00:14:24
use them to guess the future and see
00:14:26
if there is any hope of changing it
00:14:39
many Christians say god
00:14:42
gives us the freedom to choose between
00:14:44
good and evil we are all responsible for our
00:14:47
actions but in our position we
00:14:50
believe that our destiny is determined at
00:14:51
birth by god what brand of
00:14:54
freedom do we really have society
00:14:57
imposes limits on our life by eight
00:14:59
times that a new science great
00:15:01
power to use equations to
00:15:02
accurately predict
00:15:04
future behavior the group of people know where
00:15:08
all prisoners of destiny
00:15:11
alone morlaix and double
00:15:14
decathlon champion of new zealand
00:15:16
he understands that the mastery of certain
00:15:19
fundamentals leads to the desired result
00:15:21
job is also a physicist
00:15:23
after having worked on
00:15:25
nanotechnologies and this lively mind was
00:15:27
interested in the problem of the world
00:15:29
around it me yes why all these
00:15:31
diseases and it is an epidemic which
00:15:33
spreads in the shadows it not what did the
00:15:34
financial market collapse these
00:15:37
conflicts these incomprehensible insurrections these were very big
00:15:39
questions that I asked myself a moment when
00:15:41
I began to have enough data
00:15:42
available it became possible to
00:15:45
transpose the techniques used in
00:15:46
experimental physics to the world
00:15:48
around us to control it physicists
00:15:53
describe nature using
00:15:55
mathematical language
00:15:57
human behavior does not seem to fall within this
00:15:59
domain but for sean hill and also can be
00:16:01
reduced to predictability mathematics
00:16:03
hurdle jumping responds to the whole
00:16:06
hence his physique is something
00:16:07
very predictable and then but I measure it
00:16:09
in the strength with which we
00:16:11
can calmly predict when we will finish the race
00:16:12
Newtonian physics applying
00:16:14
athletics when we study the world
00:16:15
of insurrections and financial crashes
00:16:17
it's the world of non-
00:16:18
linear physics it's chaos it's another
00:16:20
kind of physics but it's still physics
00:16:22
when we look at birds closely
00:16:24
their behavior seems chaotic
00:16:27
but when we step back we observe
00:16:29
patterns at time the same
00:16:31
applies to groups of people
00:16:35
watched people move in the
00:16:37
crowd without necessarily being
00:16:39
aware of it to optimize some
00:16:41
basic equations like going from point a to
00:16:42
point b the as quickly as possible but
00:16:44
avoiding obstacles
00:16:45
so they tend to follow the
00:16:47
windy person who acts as a bit
00:16:48
of a buffer
00:16:49
so we begin to see these people formed
00:16:51
like little trains which move
00:16:53
in their environment
00:16:54
these trains only last as long as possible of
00:16:56
a few seconds a few minutes
00:16:57
before coming undone if you put
00:17:01
together these variables reaction speed
00:17:04
of the targets and if you add to it a large
00:17:06
group of people had started to
00:17:08
model it with its three or four
00:17:10
variables
00:17:11
suddenly the breasts of people
00:17:13
stop 'being random' starts to
00:17:14
become revised I don't see things
00:17:17
here simple social rules make
00:17:19
global patterns appear
00:17:21
if you can understand the patterns
00:17:22
seemingly chaotic events
00:17:24
become predictable and you can
00:17:26
find ways to change the
00:17:28
patterns the more we let's act as a
00:17:31
group - we think as
00:17:32
an individual we put our brain
00:17:35
on autopilot and
00:17:36
follow the crowd
00:17:37
in fact urban planners have learned to
00:17:39
manipulate our collective behavior
00:17:40
similar to that of ants
00:17:44
for example have you ever wondered
00:17:47
why in railway stations or
00:17:48
other vast in public law there
00:17:50
was in the middle something
00:17:51
like a ticket office as strange as it
00:17:53
may seem
00:17:54
the addition of an obstacle makes it difficult for
00:17:56
people to move around
00:17:57
the obstacle makes circulation
00:17:59
easier it is by the crowd
00:18:01
it makes people more aware of
00:18:02
what they have to do this couple
00:18:04
autopilot to make their way
00:18:13
the wars have poisoned humanity
00:18:15
throughout its history
00:18:16
and if we could see them coming if it
00:18:20
was possible to predict the starting point
00:18:21
of a conflict could take
00:18:22
preventive measures young and his
00:18:25
colleagues at the data analysis company
00:18:26
quid collect all the
00:18:28
available information on
00:18:30
conflicts around the world then they
00:18:32
look for reasons to start from the apparent chaos
00:18:35
they have acquired a certain reputation
00:18:37
in the defense sector by
00:18:39
monitoring the development of
00:18:40
the insurgency in Iraq
00:18:41
as to all the actions of
00:18:43
tens of thousands of
00:18:44
different individuals new in Iraq and the states
00:18:46
to the enemy actions created a
00:18:48
statistical signature of which none of these individuals
00:18:50
is that we discovered a
00:18:53
direct mathematical relationship between the number of
00:18:56
attacks and their size and a
00:19:00
perfectly straight line of all the
00:19:01
possibilities that exist and which lists
00:19:04
and the same patterns are repeated in
00:19:07
other armed conflicts on the planet from
00:19:10
Iraq to Colombia via
00:19:12
Afghanistan and Indonesia
00:19:15
yes what star access to begin to
00:19:16
predict with great precision the
00:19:18
probable size of an attack at a
00:19:19
given period of goof the screen it's
00:19:21
almost as if someone had placed
00:19:22
each of the dots but of course
00:19:24
no one places dots because if it's
00:19:26
people trying to kill each other
00:19:28
but once the patterns are spotted once
00:19:30
that we know what the future holds for us
00:19:32
is it possible to change it the future
00:19:35
of a different kind
00:19:36
the conflict in another direction
00:19:39
human beings decision to make
00:19:42
choose the groups to target think about
00:19:44
whether to attack large
00:19:46
organizations to act summit where is the
00:19:49
base the discovery of patterns
00:19:51
representing the world but we want
00:19:53
to find what will show us how
00:19:54
it according to our decisions the more
00:19:58
data we have and the more we
00:20:00
can control our destiny
00:20:02
but will one day have enough
00:20:05
data throughout of its history getting
00:20:07
worse after empire,
00:20:08
man discovered how
00:20:10
easy it is to alter the course of
00:20:12
world affairs. This is perhaps because, as
00:20:14
the ancient Greeks suspected,
00:20:16
we can change small things
00:20:18
in our life but at the end of the day
00:20:20
we are all at the mercy of the
00:20:22
inevitability of destiny has free will it is
00:20:26
not either we sell it from the apa it is
00:20:28
yes but yes
00:20:30
I exercise my free will m for example
00:20:32
on the track I can choose to go up
00:20:35
or down the heads I can
00:20:37
select which one I will go over
00:20:38
but I cannot choose to remove gravity
00:20:42
they eat enters into its copy I
00:20:44
can choose to some extent
00:20:46
how I go act in Iraq but I
00:20:49
cannot change the signature of
00:20:50
mathematics underlying the way I
00:20:52
risk dying it is very hard for us as
00:20:54
humans to understand this that we
00:20:56
can write next to having the choice and
00:20:58
to another not having it attacks
00:21:02
the universe from the top like a giant clock of
00:21:05
beautiful complexity but completely
00:21:07
predictable with enough information we
00:21:09
could know everything that was going to
00:21:11
happen until the end of time in the
00:21:14
20th century our exploration of the
00:21:16
subatomic world has reduced to pieces this
00:21:19
vision of a predictable universe in the
00:21:22
quantum world and nothing is determined
00:21:24
when there is no intervention
00:21:31
we imagine them or there exists a level
00:21:32
below or on a much larger scale
00:21:34
smaller than that of the quantum world
00:21:36
this level would be as predictable as
00:21:38
the universe imagined by Newton would obey
00:21:41
laws still elusive for us
00:21:44
this is what suspects the Dutch physicist
00:21:47
Ehrhart is in football winner of a
00:21:49
Nobel Prize for his role in the
00:21:51
development of the standard model of
00:21:52
particle physics
00:21:54
our best description of the
00:21:55
quantum world if physics looks a
00:21:58
bit like a game of chess we can say that
00:22:00
ehrhart is a grand master
00:22:02
if you don't know the juice the
00:22:04
pieces look to move in a
00:22:06
completely unpredictable way the
00:22:08
same can be said of a quantum object
00:22:11
quantum physics suggests that it is
00:22:14
impossible to simultaneously know the
00:22:16
position and movement of a particle
00:22:18
this is the principle of quantum uncertainty
00:22:24
a particle can be on this box
00:22:26
here or there but not in between where a
00:22:30
particle and the wave is not there very
00:22:32
well but there is another aspect of
00:22:34
quantum mechanics which is very strange
00:22:37
it is the phenomenon of interference the
00:22:41
particles can be at this place where
00:22:43
here or there but we also say that the
00:22:45
particles can be quite different
00:22:47
places at the same time we speak of
00:22:50
indeterminate position as strange as it
00:22:54
may seem the quantum uncertainty
00:22:56
has been tested and verified on multiple
00:22:58
occasions against and of the
00:23:00
quantum mechanics is a superb theory but
00:23:02
it is not good enough for my taste
00:23:03
because in some lighthouse way
00:23:05
it defies ordinary logic to
00:23:07
find logic in the quantum world
00:23:09
ehrhart probes the
00:23:11
mathematical fundamentals of quantum theory by
00:23:13
working on a scale beyond
00:23:15
comprehension he came to the conclusion that
00:23:17
despite the apparent unpredictable nature
00:23:19
of quantum particles everything that
00:23:21
exists follows a set of
00:23:23
strict rules and the universe controls it is
00:23:25
indeed our destiny on TV I likes to
00:23:28
think that the universe is like a
00:23:29
calculating machine or a giant computer
00:23:33
you will not be much different from
00:23:34
your laptop and the universe
00:23:39
calculates extremely quickly and
00:23:42
has a truly gigantic memory
00:23:45
unlike any object
00:23:46
man made head
00:23:50
our computers operate
00:23:52
using a binary code consisting of 1
00:23:55
and 2 0 but then where is the 1 and
00:23:58
zero in the universe it's all a
00:24:00
question of scale
00:24:02
with normal eyesight we can for
00:24:04
the most part spotting a coin
00:24:06
on the ground but according to ehrhart spotting a
00:24:09
miniature coin on this
00:24:10
miniature sidewalk is almost impossible and he is
00:24:13
looking at something
00:24:14
exponentially smaller than that
00:24:17
several trillion times
00:24:19
smaller than an atom it s This is
00:24:22
the Planck scale, the smallest scale of measurement
00:24:23
in the universe. This
00:24:26
fundamental level of existence would contain
00:24:28
the elementary beats of information which
00:24:30
are at the heart of creation.
00:24:32
He calls them the exist at bhl and the
00:24:34
transformable these are particles
00:24:36
producing only
00:24:38
binary answers either yes or no but never
00:24:41
perhaps this level exists very far
00:24:44
below the quantum world that we
00:24:45
observe today on the i's it is on
00:24:50
this scale that everything happens that everything
00:24:52
becomes to determine the calculations of
00:24:56
ehrhart indicates that on the Planck scale
00:24:58
the universe is not a chessboard for
00:25:01
the pieces move strangely and
00:25:03
make great jumps he is outraged a
00:25:07
binary world where a square
00:25:09
only affects that of on the side imagine in a
00:25:13
Helen checkerboard with billions and
00:25:15
billions of squares seen from very very far
00:25:17
new round can follow in more
00:25:19
detail what is happening is would say that
00:25:21
it is the coach of experts see
00:25:23
things are not determined
00:25:25
in my opinion it is for this reason that in
00:25:27
quantum mechanics we can no longer
00:25:29
say things with
00:25:30
infinite precision because we no longer control at all
00:25:33
what happens in the smallest
00:25:34
details and it is a command would like
00:25:37
its highest level deep
00:25:39
the universe is perhaps a huge gain
00:25:42
and everything that happens in it is the product
00:25:44
of its movements but at the level of
00:25:46
reality that we perceive we
00:25:48
cannot see these basic movements
00:25:50
although our actions are at the end of
00:25:52
account to determine by the universe we
00:25:55
have the impression of making our own
00:25:57
choices but according to this physicist the vagueness of
00:26:00
quantum mechanics allows the existence
00:26:02
of an authentic free will
00:26:04
he affirms that the causes and effects
00:26:07
are perhaps not what that we think
00:26:09
that the future can reach us
00:26:11
and affect the present
00:26:17
and
00:26:22
we
00:26:27
the wolf concept of karma maintains that
00:26:31
any good or bad act, however
00:26:33
insignificant it may be, will ultimately have repercussions
00:26:35
on the person that it has accomplished
00:26:38
with an impact equals body but karma
00:26:40
as the moral law of the cause years
00:26:42
of the effect but if it actually worked
00:26:45
in reverse here are our
00:26:47
future actions and author has not affected our
00:26:51
essay
00:26:56
this physicist takes a new look at
00:26:58
quantum mechanics
00:26:59
for him free will is inscribed
00:27:02
in the fundamental structure of
00:27:04
the universe that anouar tons and professor
00:27:10
at the state university of san jose in
00:27:12
california since childhood he has been
00:27:15
fascinated by the idea that the
00:27:17
fundamental laws of nature can
00:27:18
explain almost sweet of our
00:27:20
daily existence
00:27:22
where I was a kid the parents
00:27:25
made signs to us and
00:27:26
watched them with the film projector it was
00:27:29
necessary to tap and found them
00:27:31
fooling by leaving the projectors on
00:27:32
to laugh because it was funny to
00:27:35
see everyone scrolling backwards at full
00:27:37
speed and my father was a physicist he
00:27:39
told me we remember very well
00:27:42
everything you see here it always follows the same
00:27:43
laws of physics
00:27:44
whatever the direction in
00:27:46
which it scrolls and I have always
00:27:48
tried to come to terms with this question
00:27:49
how things that seem so
00:27:51
different can obey the same laws
00:27:53
of physics the laws of physics
00:27:57
can also predict
00:27:59
people's choices are there
00:28:01
fundamental rules that mean that when everything
00:28:03
sets in motion from a
00:28:04
given starting point this can only
00:28:06
inevitably lead to one is only one
00:28:08
possible outcome
00:28:11
this is what einstein thought
00:28:13
according to his theory of relativity we
00:28:16
live in a block universe in which
00:28:18
all places in space and all
00:28:20
moments in time are arranged
00:28:22
like on a reel of film the past the
00:28:26
present and the future
00:28:27
coexist simultaneously therefore
00:28:30
for ken the future can affect the past
00:28:32
just as the past affects the future the
00:28:37
future n is not just a series
00:28:38
of random events
00:28:39
there are correlations between the present
00:28:41
and the future that we can predict the
00:28:43
role of science
00:28:44
when we make its predictions natural to
00:28:47
consider the universe as a structure
00:28:48
continues to impact image cut out and
00:28:51
went everywhere on the ground
00:28:56
that she thinks that all events,
00:28:58
even quantum ones, have a precise starting point
00:29:00
and a precise arrival point but
00:29:04
there is uncertainty as to what
00:29:06
happens between the 2 on May 8 - to explain
00:29:10
this by retro causality the diarra
00:29:13
the idea that it is the other future choices
00:29:14
which pose this uncertainty retro
00:29:18
causality means that the future affects
00:29:20
the past the beginning and the end of an
00:29:22
event are frozen in time but
00:29:25
they affirm that
00:29:27
quantum physics creates flexibility in the
00:29:29
middle and this flexibility offers us
00:29:32
the chance to control our destiny in
00:29:35
the Newtonian concession of the universe
00:29:36
clock the initial state and the laws of
00:29:38
physics determine early there is no
00:29:40
freedom because of this initial state m
00:29:42
in a universe where time is
00:29:43
symmetrical
00:29:44
but it is not necessarily doing
00:29:46
something depends on the initial state
00:29:49
but also on the final state then the
00:29:52
events intermediaries are not
00:29:53
ready the terms which are not
00:29:55
determined by the initial state but in the
00:29:57
end these will perhaps be determined
00:29:59
ball it has greater room for maneuver
00:30:02
for free will and geese in
00:30:03
other words the point of arrival of
00:30:06
our destiny is perhaps fixed but
00:30:09
we do not know exactly how
00:30:10
we will reach it
00:30:12
the future gives structure and
00:30:15
meaning to the past it imposes order on an
00:30:17
apparent disorder but it can
00:30:20
also be determined by our choices of
00:30:24
identical rows of lines - rob linde it
00:30:25
contains film the other one is empty it
00:30:27
so I don't know yes the film so
00:30:28
I choose at random and it turns out that
00:30:30
I was born I choose at random and I'm
00:30:32
still right if that's a million
00:30:34
times and that I find at all then
00:30:36
I say to myself that something strange is happening
00:30:37
what is the cause and the consequence
00:30:40
is the situation of the reel which causes
00:30:42
the choice and raises me all the barbers the
00:30:45
wii bizet phenomenon of
00:30:46
ordinary causality to which we are accustomed
00:30:47
there is a microscopic scale we
00:30:50
consider the universe with this
00:30:51
symmetrical aspect of the pile is much more
00:30:53
natural to think that it is my future
00:30:54
choice which determines this variable
00:30:56
that it passes the position of the film
00:30:58
and not the opposite
00:31:02
so I don't know what I'm going
00:31:03
to decide in a minute n ya yet
00:31:05
it's this decision will be made it
00:31:07
will be determined
00:31:08
it's the perfect example of something that
00:31:10
I love which is probably not
00:31:12
determined just in the past mutiny and
00:31:15
in the world will ultimately determine
00:31:20
the debate on are we free roba to
00:31:24
choose our destiny has raged
00:31:26
for thousands of years but
00:31:29
could continue for
00:31:30
millennia normal no matter who is right
00:31:33
deep down we have the feeling that
00:31:35
free will exists doesn't it and if
00:31:38
believing we have the choice was essential to
00:31:40
the survival of the human species
00:31:45
in 1994 a young man named john
00:31:48
adams colors the a book of the
00:31:50
nobel prize in science
00:31:51
francis cake this last cry you are
00:31:55
in fact nothing more than the behavior
00:31:57
of a vast assemblage of
00:31:59
nerve cells and the molecules associated with them
00:32:04
the native joe with the colors in question
00:32:07
has become neuroscientist
00:32:08
today and the professors were coming to
00:32:10
the university of california at santa
00:32:12
barbara
00:32:13
but cake's book continues to
00:32:15
disturb him the astonishing beauty of
00:32:18
francis crick really captivated me for
00:32:19
several reasons firstly he
00:32:21
categorically stated that science
00:32:23
had completely ruled out the existence of
00:32:25
free will i wasn't really convinced that it
00:32:27
deserved such a degree of certainty
00:32:30
francis crick's ideas have only
00:32:32
gained popularity over time
00:32:33
so a few years ago
00:32:35
johnatan began conducting
00:32:37
experiments to see how this message
00:32:38
purely deterministic affect
00:32:41
people's behavior
00:32:43
today's experiment will test the
00:32:45
morality of a group of students but
00:32:47
first they will be exposed to messages
00:32:48
about the nature of fate and free
00:32:50
will at the end of the experiment and
00:32:53
will fill out a short questionnaire in
00:32:55
exchange for a one dollar coin which they
00:32:57
will take from this jar
00:32:59
some of the students read
00:33:01
statements supposed to give rise to
00:33:03
the feeling in them that they are the toys of
00:33:05
biology and destiny others read
00:33:11
statements reinforcing their
00:33:13
belief in the existence of free will
00:33:19
then all
00:33:21
participants are given a cognitive test
00:33:23
but before he gives it back johnattan
00:33:26
claims to have to leave it's I'm in
00:33:29
quarters you're going to have to correct the test
00:33:31
yourself here are the answers made the
00:33:33
roof in dollars for each
00:33:34
correct answer the messages rather by the
00:33:40
students will it affect their
00:33:41
behavior
00:33:45
most of the students only found one
00:33:46
or two correct answers some
00:33:49
are paid in consequence but others
00:33:54
take more than their god
00:33:58
the students having read that free
00:33:59
will does not exist we
00:34:00
systematically take more coins than
00:34:02
those who have not read this message
00:34:10
you tell people that free will
00:34:12
does not exist in to some extent
00:34:14
it undermines their ability to act
00:34:16
orally according to john attah 3 having
00:34:20
only pawns on a cosmic chessboard
00:34:22
gives people an excuse to act badly
00:34:24
it's not my fault i don't have
00:34:27
free free will
00:34:28
another possibility is that it
00:34:31
somehow destabilizes them
00:34:32
normally they exercise free
00:34:34
will but when you tell them
00:34:36
it doesn't exist
00:34:37
they don't have the energy to resist the
00:34:39
temptation to cheat like any
00:34:43
thinking person john hutton has his
00:34:45
own ideas on free will
00:34:47
he understands that we are modeled by
00:34:49
genetics, society and the
00:34:51
deep functioning of the universe
00:34:52
but for him this does not exclude
00:34:55
the existence of deliberate choice from my
00:34:57
point of view free will is
00:34:59
a lot like sailing
00:35:00
when you're doing the beater you're
00:35:01
tossed around by the currents the weather the
00:35:03
wind but even though you can't
00:35:04
necessarily control your position at
00:35:06
all times if you make
00:35:07
your tack correctly you end up roughly
00:35:10
where he wanted to go c This is Johnatan's theory but neither he
00:35:14
nor anyone else can agree with it
00:35:16
much more is known about the nature
00:35:18
of human consciousness and
00:35:19
physical reality etc
00:35:21
given everything we don't know
00:35:23
that he we must be very careful before
00:35:25
completely ruling out the existence of
00:35:27
something as fundamental as free
00:35:28
will
00:35:29
it is good to keep this option
00:35:30
open to leave people the
00:35:31
possibility of believing in it because
00:35:33
free will or at least the belief in
00:35:35
its existence seems to bring them
00:35:37
a lot
00:35:43
whether or not the universe controls our
00:35:45
destiny is men will
00:35:48
always wonder why such a thing
00:35:50
happens it will always seek to
00:35:53
change our fate the corollary this even
00:35:54
if it is determined we do not know it
00:35:57
and we will probably never know it,
00:35:58
but every day brings us a
00:36:01
new chance to discover it and create
00:36:03
new opportunities to take
00:36:06
illusory or not control over our destiny.

Description:

Et si tout ce qui s'est produit ou se produira était prédéterminé, quels sont les arguments pour ou contre l'existence du libre arbitre ?

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