us and the sound we're sitting on are on a big rock which is spinning so from our perspective we see the sun moving so all the movement of the sun that we see is real but is not part just of the sun alone and the same is about time time it's a more complicated story that what we usually think that's what physics has shown that time is different than what we usually think so that the time of our everyday life is not really in nature nature the kind of nature is more complicated. if you give you an example. suppose your clock. or watch. gives time and we all know that the the property of clocks is that they measure time so this is the same time for all of them if i look at them and they have the same time and i look again they're the same in time well actually if you measure precisely that's not true if you take 2 good clocks these one is my grandfather watch is not particularly good

but if you do good works we make one a little bit higher you wait a little bit and then come back and look at them they're not they don't indicate the same time because there's more time up here the time down there and this can be measured today. in a laboratory so time is different that what we think the time of our usual image anation is false is an approximation is like the setting of the sun. better. question is going to come back to this experiment a bit later but. before we get deep into the more scientific aspects of what your notion of time is i just want to you know get it right for us plain humans because for me the biggest proof that time exists will at least the way we feel it is in our bodies aging and mass eventually dying i mean we're part of the nature right we're part of the bigger picture as well i believe that lake i'm part of is

something huge and that huge is part of something that is me. so would you deny that time in that sense exists also for me in though that i'm part of that huge nature thing that you're talking about but time is very i don't there i don't make is i don't know i don't i think you said it very correctly time it is for us we age . is more than that we remember the past right and we think about the future and we know we're mortal so we have all this story you know ahead about or a life that the past the present the future this is all real but the guards us that's not the way a star leaves a star does not remember the past does not expect about the future so we are part of nature and we experience things which depend on our own natural

properties and not universal let me go another example that's the up there action right and that's a down direction is that forced of course is it's true i mean that's up and that's known and things fall talwar down but i'm in canada you're in georgia when i point out that if you point up you're pointing in a different direction so which one is a true up it will look the same but in reality we are pointing in different directions because the earth is round of course so we point in different directions so which one is a true up which is all true up is up to me and up to you and if we if your brother was floating and astronauts outside the earth that. doesn't mean anything because for him all directions are the same there's no up so there's no up in the universe the universe doesn't have an apple direction in a down direction but there isn't up to me in one direction as

a map for you in another direction in the same time there is no global time in the universe the unit doesn't have a time but we. creatures that are only an environment in these heat then there is a long story around experience. which is our own time and if you look very very carefully we see the differences even from a time a different altitude can i ask you something so why does time if they doesn't exist at the makers copeck state of things right have a direction i mean why is it never pointed backwards. and though this is a great question. it came as a surprise in the development of physics. slowly. that time is different than that than our usual way of thinking so this in they said that time goes at different speeds. it was understood about

a 100 years ago in fact iceland is the 1st one does that and he 1st got to this idea theoretically sort of try to match since we know about nature but now we measure in the laboratory so it's not an idea by i study something we do something to that we can measure but even before that a break surprise was that the laws of physics do not distinguish the past or the future and that's so strange because for ass the past is completely different for the future ride buses 6 it cannot change it i was born the someday they cannot change it there was a russian revolution in the beginning. and that's it the future seems open so they seem completely different stories but says it does not distinguish the past from the future so there was a lot of discussion or what it means and it turned out that

the difference between the past and the future only can comes about when we don't look at all the details that what we do all the time because we don't see the individual atom moving then. the big story all things move in in one direction and this is what the physicists called it the growth of entropy this is a name for for this a difference between the past in the future that we use in physics is hard to conceive of because we think in terms of past and future but once again it's because we are. very big being scum paid to do the atoms of the molecules the you see the new nolen film i mean would you is it possible theoretically whatever is going on in there. lowell took this idea of entropy. yes that he took the idea which is. the basis of an idea correct which in principle

it could be possible to move toward the past and toward the future by by by playing with entropy by changing their arrangement of the molecules in principle is true but then of course he made a movie. which is absurd that because we cannot arrange the molecules in the way so it's a bit of sort of hollywood stuff is just a lot of fantasy in the movie and i found it a little bit confusing and complicated the beauty of the problem of time but what fascinates also all of us about time is that there is all this complexity there is there is a sometime last bit of time which is in the mechanical things in the table in a mix of things namely when you have many many atoms moving in in our brain and even in our psychology i would say because you you started and i think that was very good you said we time for us is our growing older and you know time for us is also what takes away everything we have right we know that we're going to lose

everything we do we are today we're going to die all the people we love will not be going to be there we are going to be there so there is a sort of anxiety and at the same time time is also what brings us thing so we have a very emotional connection of by the way we are we're wired in our in our brain is that we attach to good grasp something in in the future and the future of losing something in the past when you say time and that's what we mean to a large extent so. a physicist i'm a physicist and i do science but a physicist make a mistake makes a mistake if you think that ok i don't want to think about psychology just look at the motion of things and then you don't see anymore what time is for us time for us is a lot. this emotional. we're

talking about. in 2040 you know bloody revolution of you tube clip the demonstrations going to be relatively peaceful political protests to be creasing the violent revolution is always spontaneous or is it you know we hear from him in your list book video through me in the new bill is that i'm new school in need of the former ukrainian president recalls the events of 2014. those who chilcote have invested over 5000000000 dollars to assist ukraine in these and other goals that will ensure a secure and prosperous and democratic.

think this is our 3rd administration we've been down the shaft for going on 12 years anyway you know a big theme of $22026.00 team was d. dollars they should dig lobel ization and now it's all coming to. right now there are 1000000 people who are overweight or obese it's profitable to self. and sugary and salty and the big. not at the individual level it's not individual willpower and if you go on believing that never change this obesity epidemic that industry has been influencing very deeply the medical and scientific establishment. so what's driving the obesity epidemic it's.

sweet taste awful like absolutely awful 1st game code then a 2nd wave of food is coming no the virus is mutating and walk 2 blocks away from the apartment and i would get confused as to how to give not. patients who've recovered from. the symptoms would.

have a hard time. and we're back talking about the notion of time is it an illusion or does it truly exist talking with professor lot of valley theoretical physicist and bestselling author professor if time also is mostly a human perspective because emotion is

a very human lee thing grade or even a delusion in some sense. how come physicists like yourself use it to find out what exactly happened during the big bang i don't know i'd always like sas innate in me when i read about how this or that appeared on a 2nd or 3rd nano 2nd after the big bang is all that also a delusion. well it also fascinates me is a big part of my job is to try. to figure out what happened near the big bang and that's part of my daily daily work to do so to contribute to the study of what happens when we study the big bang right was this long ago what does it mean i mean we say the big bang was what certain 14000000000 years ago well it means that if you take all the clocks and we go back in time they're different but only

average if you go back 40000000000 years that's a big bang in then we get confused precisely because of the big bang or. it was so hot so compressed air when a quantum situation is very different physics than the one we're used to with deep in a quantum gravity gene that even the physicists notion of time is a good anymore we have to change a little bit we're not we don't we haven't figured out exactly what happened at the beginning perhaps there was no time at all there is just started time so these are trying to write equations. that tell us what happens and compare with observations of the sky and come up with a good story and one of the difficulty is precisely what you said that the usual notion of time even the physical one the one in the moxley accretion in the newton equation the 11 studies at school when one study physics you know

a pendulum moves in time even that notion of time is not good any more of the big bang so that's really the beauty of physics it forces us to rethink our basic notions sometimes in a computer clear way we have understood right it's a. we're not still moving and so on and so forth sometimes like today we're over the border of what we know and even the notion that we use are not clear so not everything is clear about what exactly happened with time of the big bang is a topic of discussion. but can i ask you something said previously that you know that the time never goes backwards it's always goes forward right so time's an arrow which is moving forward do we remain static in reality because there is no time really or or are we moving along with it. no i don't think we remain static. and it's not that easy when when i say i will if you

say sometimes there is no time. people try to imagine or write so the universe is just a block down there nothing happens. but that's a wrong imagination because if nothing happens what you're really thinking is that there is a rock there in time passes and the rock doesn't change. so nothing happens it's a way of thinking time passes but nothing changes and the correct image in issue is the opposite universes change you know as is happening a lot of things happening in the universe just imagine or just a many many happenings but they're not all do it in a common time they're sort of disorder it or it's our. our way of organizing them a lot to memory and 20 anticipation that we read the rule of happening of the

universe as a single sequence of things happening that's a mistake but there's no. there's no. you see when i say the sun doesn't move. right so we learned at school i mean the more. we see the sun going up and down up and down every day and then we are kids who go to school and the teacher or father or mother tell us you know it's an illusion the sun doesn't move but this does not mean that the some in the sky blocks is not going to move if you keep going around is this is not the sign is going to move is just more complicated story. i wanted to also use the example of music if i may it's a thing that doesn't really exist but only does because it is happening in time right instruments play together and their rhythm or a pulse that brings time alive and we only feel something when music changes in time and non-changing becomes

a drone and stops having meaning like you know my refrigerator making a noise so if an elementary physics lab will time doesn't matter or doesn't exist why does it matter on a non elementary lab or on a level of music for instance does this music essentially create time. this is a great question and in fact you know in the history of thinking about time music played a huge role suppose you hearing music ok in a song and in some moment right now you're hearing one note not not the full song and then in the next moment you're hearing one so you never hearing the song you only hear one note at a time in every moment you hear one note. so why do you react to the to the song ok there's never the song up there in the in nature at every moment there is only one note at a time and this was before harmony. it was just melodic ok

so what is the answer the answer it's using for a moment is obvious. when you hear a note your brain still remembers the previous notes right so what you're hearing in the using of the melody just think of your preferred melody in a moment you hear a sound but you at the same time remember the previous one and so if you think of the time of the militant cells is really a memory stuff is not you know there is in your memory that stayed together out there there's one note at a time in this sure the loss of our. our. feeling and perception of temporality it's connected to the fact that we remember and in a sense if you want. let me put it in some way a stone or a cannot hear music. because he doesn't have memory to hear to hear music you need

a memory and memory brain or a computer that has memory not not the brain because we are spiritual things different from the rest of nature i think that we are just pieces of nature like everything else but we are very cool or pieces of nature with a lot of wiring. and stuff it is this peculiarity that allows music to exist. in a very precise since music. can only exist because we have this brain which remember not only that because when you hear music. i think everybody knows those music you hear a piece of a melody and your brain anticipate what would come next and music is all a game that the music is coming in part it comes what you expect ok the next not you nor did you so you're happy that you get it any imparted to prise you because it comes something it's all just game of surprising and

satisfaction which makes music so music it's. in some sense this does not mean that there aren't you know sound waves moving around that's all true that's all real but what we call music and it's what we make with all that. so interesting. so you can say your experiment you just showed me with your watches yes. i mean the whole thing really just blows my mind because i mean i see time as something universal right like a minute is the same here in georgia as it is i don't know somewhere in new delhi 9 hours on the plane to new york would be the same 9 hours here on earth if there is difference in this beat of time why don't we seal it i mean how far a bar do i have to climb to feel the difference and will my subjective perception you talk about memory but i feel like perception is also

a big thing that actually distinguishes time will my subjective perception of time even allow me to feel it even if i'm high enough. yes so let me answer both questions 1st 1st to the 2nd one and then 1st what would your subjective perception matched as yes absolutely. there is. there's some movies interstellar for instance in which the hero. has. goes near a very heavy things and so time slows down a lot for him so when he comes back for him. a few days are passed and when he comes back years past and in fact at the end of the movie he comes back to earth and finds his little daughter. who has become an old lady so the main character is still a man in his middle age and his little daughter now has become an old lady so the

subjective. perception of time has been completely different for the 2 so absolutely certain of that this is solid physics since when is that now you ask well wait a moment why don't we perceive that i mean as you say a minute for use a minute for me in a minute. well the reason is because us longer to stay on earth so ga can and daily we go to the mountain the. highest of these differences are very small extremely small and in fact in my when i teach physics i gave to my students sometimes the exercise will compute what is the difference of time your brother go up to live in the mountain the highest. village you can imagine and then it comes down after 50 years and what is the difference of time is always a computer the difference is just a fraction of a 2nd so too small for our. to get it but if you have

instrument you can measure it and we do measure it and the spectacular thing is even today we can measure it not just the mountains but even 20 centimeters higher 20 centimeters long we can see that this clock goes faster in this clock and when you know the g.p.s. the little thing we use you know driving the car that locates us it was through some satellite and when the satellites were put up there at the beginning was americans in the seventy's and then it was done you know by the russians the chinese the indians now we have many systems like that where the americans put the 1st satellites up there this is told engineering careful because up there times goes faster and this is a clock in the in the satellite because essentially what happens is you know. satellite was a clock and it beams down the time and then you're little machine uses that to locate yourself and if this is still in jury careful because time there goes

a goes faster. they nearly adopted the system but that wasn't the hand of the military and some general in the american military said oh come on this is silly time goes faster than i believe that so the beginning the 1st satellites experimental one would put that they had to use their to switch they could keep this into account or not and it doesn't work if you don't keep this into account so technologically today your when you drive a car and you have the g.p.s. system to tell sue which where you're going the system works in a way that keeps into account the fact that up there time goes faster so its part about technology today really fascinating at present i wish i had another 3 hours to talk to the notion of time but it's been really interesting to at least

have a little bit into the notion of and perception of time and what is it doesn't exist is an illusion thank you very much for this wonderful insight and i was shown the best of luck and i hope we get to do this again soon thank you i hope saw us well and thank you for your precious wish you very much on the point and this is a fascinating topic i hope to talk to you again definitely thanks a lot to be safe. i. is your media a reflection of reality. in

a world transformed. what will make you feel safe from. the isolation for community. are you going the right way or are you being led so. direct. what is true what is faith. in the world corrupted you need to descend. to join us in the depths. or a maybe in the shallows. defenders of big tech often explain if you don't like their platforms think build your own well on this edition of crossfire we talked with some interested individuals doing just not against all the odds when they succeed.

so what we've got to do is identify the threats that we have it's crazy confrontation let it be an arms race off and spearing dramatic developments only personally i'm going to resist i don't see how that strategy will be successful very critical time time to sit down and talk. some rumors as soon as you proceed through she's going to be known chris mihm the new me. nothing. remember the just going for a vote is bigger than your fear that oh. i'm talking is a very international community a. community used to be perfectly truthful and. you just have to keep it

as this. you do indeed. those who push them at the world food to stoop to brazil through butter nuchal through. everything produced polluted with it. to do with the above be. effective but decided not to take its life. with i gave you that. nuclear become a battleground in the us in vermont people are demanding the shut down of a local plant for my yankee is right now my focus because it's a very dangerous oh no care power plant the owner is attempting to run the reactor beyond its operational limits this case just sort of puts a magnifying glass on where's the power in this country where's it going is it

moving more towards corporate interests or is it more in the idea of a traditional participatory democracy as are powerline with the people this case demonstrates that struggle in the very real ways our struggle. to. find their slashes deliveries of it's coming back seen and europe and north america after production delays. threats of legal action from italy and poland. also this hour serbia enters talks with russia to start its own production of the sputnik we hear from a renowned serbian film director about why he trusts the vaccine. his fates and as i was told by someone who probably in serbia gotos is one of the 3 you should

receive the same stuff in the same room. and president promises that students will be able to go back to university.