Hello, UKpostsrs. The World Science Festival is looking for enthusiastic translation ambassadors for its UKposts translation project. To get started, all you need is a Google account. Check out Time Since Einstein to see how the process works: ukposts.info_video?v=d5G90ovdqmk&ref=share To create your translation, just type along with the video and save when done. Check out the full list of programs that you can contribute to here: ukposts.info_cs_panel?c=UCShHFwKyhcDo3g7hr4f1R8A&tab=2 The World Science Festival strives to cultivate a general public that's informed and awed by science. Thanks to your contributions, we can continue to share the wonder of scientific discoveries with the world.

Finally Sir Roger Penrose received the Nobel Prize. Congratulations!

I’m literally spending my Friday night listening to this discussion. Me 10 years ago would have never hung out with me now.

We should throw away the word "time" and simply use "change' instead. In this way we can discuss variable rates of change in different places of the universe. Then we can see things like gravity as simply changes in the rates of change giving acceleration in the form of space/rate of change. Then you can ask questions like, 'well what is changing the rate of change?' If it is simply that more energy in a space means things become more complex and the universe responds by slowing down the rate of change then many things become explainable.

The discussion by David Albert at 39:20 is worth watching a couple times. The "arrow of time' or 'flow of time' is a metaphor.

Looooove these panel discussions, especially with the artistic interludes. The cosmos, quantum everything is inspirational to so many.

Woo! Penrose!

Ticking away...the moments that make up a dull day. (add the next line)

Great debate, I thoroughly enjoyed it.

Great to see Michał Heller in such a panel, I really enjoyed his books

Currently, I'm convinced that changes in time result from changes in energy, and energy is more fundamental than time. Without a change in energy, there's no change in time.

Great Debate indeed, but why is Sean Caroll not mentioned in the description of participants?

Brilliant intro, quite brilliant.

love this kind of content , just don,t like being interrupted by adds although this one seems free of it, but thanks UKposts.

These brilliant people are indicative of how space/time is not yet understood even by our best.

Watching a debate devoted to time, that occurred 11years ago, adds a dimension to the interior dialogue one naturally has during such exchanges of ideas. Is it real, or is it Memorex? As a Native American, I appreciate the flow of time in a manner that seems different than society at large. To me, the eternal now seems much larger and more encompassing than the past, which is limited in scope. And the future is even more narrowly defined, like a microscopic cone that is limited to things I mentally select as likely targets of inspection. This happens in spite of the fact that I know many other events and destinations should be available. I simply lack a reference from which to launch my focus, as in more information about that future is required. But that view is only a single aspect. Ideas, which seem to me to be projections of the self, appear eternal. The debate here, while 11 years in the past, is in my present, and is likely to be in someone else's future. But the ideas, though some have since been modified, remain as vital as when first uttered in 2009. (Vitality is not an property of correctness, nor the reverse.) And each time we bring this discussion forward to a new present, it is both past and present, to our senses. Our mind observes both as present now, though we can mentally tag the debate itself as older than our subjective now, but we have to make that effort, or it de facto becomes now. Therefore, it seems to me, that I the person, lives outside of time, choosing the place of self in the now only as a convenience to my corporeal body for its utility as a point of influence on the line of time recordings. It's my point of access. To me, having grown into awareness with this system, there is a significant amount of bleedover from the past and the future. And this apparent phenomenon therefore enlarges, and perhaps distorts, my present. The bleedover effect is strongest from the past, because it is able to also be solid in the now. The same effect from the future arrives in a more amorphous manner, such as anticipation, dread, desire, etc. Though more solid insights are occasionally available as well. Should we someday acquire a more firm grip on this greased pig called time, that runs amok with our senses, we will become citizens of eternity.

It seems to me that there would be much less confusion if time as we experience it was called time, and the time used in physics used a different word, or maybe a phrase, such as Event Passage.

It seems that the discussion is limited by consistently putting time within the context of human consciousness. It’s hard to know to what extent this is a grammatical necessity or a real picture. To have an objective discussion about time, we have to make clear and distinct the elements that human perception could interfere with

what a lively host and amazing panel!

I personally believe that like the double slit experiment, time is a construct of the observer. If we didn't make the observations of day to day life as this thing called reality. It would be hard to believe time would even exist.

thanks for this video

People like to ignore the fact that we are moving at the speed of the earth + the speed of the galaxy at all times. I haven’t ever heard that number mentioned as our individual speed. When referring to aging and time passage, Is our relative speed to the earth all that matters? That seems to be what everyone refers to. How fast is the dark matter traveling. What is our relative speed in reference to dark matter? What is the effect on our molecular composition by our relative speed in reference to the sun and the black hole at the center of the galaxy?

Watching from Sacramento California. Bbmsara.

Very interesting discussion on the different views of time. A Theory, B Theory, and a mix of a few others. All in all, time may be the most mysterious of all the dimensions concieved.

My favorite quote here about time from the theoretical physicist being, if somewhat paraphrased, about putting a black hold near them and the comment from the moderator not being heard and not seeing photons of light to see him even existing

Your videos are great science is so cool and trippy

To say that the arrow of time is fixed because we cannot move backwards is not necessarily correct. Play with this idea; say you can change the arrow of time just by wishing so. So everything is happening backwards, then for some reason time changes direction again to move forwards, there is no reason you would be aware that you had just experienced the backwards event or that you had experienced the same event before as your conscience would move backwards with time thus being erased. Therefore there would be no way telling whether we actually do change directions in time every now and then.

This was a nice panel discussion. I didn't think I would watch the whole thing XD .

Shortest distance between 2 points is a straight line. BUT a voice can be heard miles beyond 🌎

These kind of videos make me feel like I should write my.own theories about time and movement in the universe

Start watching this program from 8.00 minutes.

sooo, when you see something its a reflection from a light source. light travel fast but still takes time. your eye balls and your nervous system to you brain an back takes time. put both together time has been done. so your present outlook is a memory from the past . same with thoughts is memory of your eys past memory.

I think the kid in the blue shirt just described the effect of time on a universe. By definition being outside a universe escapes you from its time.

Pace. Seems people forgot that we use to measure distance and time with our steps. Some dancers are said to be 'light on their feet'.

Understanding “Time” Is going through Dimension!

určite čo si stohu pamätám tak som mal veľmi teplé srdce ♥ ktoré asi to zdvihlo

Congratulations penrose..! At last you have been recognised...

So beautiful

Watching from Sacramento California. Bbmsara

awesome vid ! Prof. Roger Penrose & Prof. Horace Slughorn are thE same species !

Time and Love are the only things that double when shared.

We r all connected

I love listening to intelligent minds!

33:19 ...her answer should have been "superposition"

Does any one know what book is the moderator reading at the beginning?

Is entropy really the progression from order to disorder, from organization to randomness? Isn't the end result of complete entropy a perfectly uniform state where there is no randomness or variation?

I prefer to think of 'time' in another word, 'processing' and also processing in one eternal moment, ask yourself the question, apart from physically looking older to others as you 'age' - do you feel any different, aside to life's learnings and experiences added to your collective mind intelligence, have you always felt in the now with yourself ?! Have a think about it as am sure you all have. Time is an illusion, a very good one, although it is not the way of Universe, do you see a huge clock in space? No... to understand eternity and time, you must first conceive that all is processing in the forever moment, whilst to be clear, yes we have memory, this is important in... yep.... processing... as also does our predictive sense of 'future', which becomes 'present processing' then memory, which is the residue of energy of whatever it is... still enjoyed this show as am sure others, felt to share this.

My question would be: Since they talked about beginning of space/time, how does that corelate to presumption that we live in a multiverse? What is between many universes? Is it space or time, is it nothing, is it space/time, is it infinity? Different universe different laws. But could all those laws derive from some multi universal principal? Is time universal property for every universe, just that it behaves differently...?

For those who don't know Caetano Veloso, he has a very beautiful song called Oração ao Tempo (pray to the time). Nothing scientifical but very beautiful indeed.

Perhaps we first need to know what energizes energy, (the big bang?) and if this is the case, time is emergent and consistent with the second law of thermodynamics.

I have a simple question. If I drink a cup of coffee at a specific time and repeating it on multiple days then can we define spacetime for such days? They look identical unless we add a specific date. While mentioning spacetime why date dimension is ignored by Einstein or am I missing something? To me a moment in spacetime looks meaningless without a unique date that contrubutes in defining a sinple unique moment. Thank you. Riz

It is interesting that at the event horizon time is said to come to a stop, and beyond the horizon time changes to a space, according to what we are being told...that suggests time becomes a place, allowing us to pick the location...but then we have no time within which to pick the location...so where does it go...or more to the point where do we go...what is our location in time and how does that appear in space. If we approximate will that be nearly right enough to give us the solution?

And the only thing we can do is just take r time with LOVE, PEACE, and FAITH

The presenter is a magnificent speaker, he truly is. Not a great walker but he more than compensates for that.

I love this meanderingly long and wonderfully exotic waste of time. Thank you for this video.

If our perception of time shows there was a beginning as we experience it, then there is likely to also be an end as far as we experience it. So despite our radical advancements in the future, we will need to also figure out how to change our experience through time to exist in a timeless state of the universe in order to survive. If we simply reversed time for our own experiences, this introduces time travel paradoxes: would we need to avoid ourselves in the past as we continue to progress through spacetime, or would it not matter, and we can destroy humanity as it were and continue converting every particle of the universe into computable conscious matter?

if the universe is actually expanding, this expansion provides an obvious arrow of time, no current moment can be identical to any prior moment as the universe is always larger than it was... no entropy considerations needed... simple novelty.

We r all living in time, if u want to see the flow of time its just like the flow of water

The notion of Before Time seems unanswerable without firstly observing all of the ingredients that were present.And secondly the action that occurred to the ingredients to make Time commence and go from stationary to instant inflation

1:21:18 If I am particle sized from the face of a giant, would the quantum wave function change and would the uncertainty increase from the giant's perspective? Would it be the same as us, humans, only being able to measure the position of a particle with probability? If so, would it be fair to say that nothing has more entropy than anything else? Or that it's relative?

1:20:29 - Hold it. How does Many Worlds dodge nonlocality? One can still do Bell experiments under a Many Worlds interpretation, and one can still demonstrate correlations between "here" and "there" that defy Bell's inequality. Can someone elaborate on this?

When you are alive, during your success time, yours is yours , and you can help the others, to go forward to the future, in present time .

I see this event was quite some time back.

The idea that the space between galaxies is expanding and the this expansion is accelerating could be considered a improvement to big bang cosmology. Perhaps, at one time galaxies were closer together but not packed into an infinitely dense space as the big bang theory postulates. Then slowly at first but increasingly faster over time the distance between the galaxies expands leading to the present separation of galaxies.

Imagine you want to expand a point O in three dimensions point x,y,z. First you need energy to expand that point O, once you have expanded it in 3 dimension points x,y,z you have created time and expansion from one point to another point means motion, So SPACE ,TIME,ENERGY,MOTION are all one thing.

this has been the best one of these that ive seen.

How should you understand if there isn't at all. There is no time . It's just the events that we witness. When we observe a child, we notice that it is growing and that we take it as time. If we isolate all the events we can no longer perceive time

Well done for the statement that we do not know the reality and the ontologies derived from various theories do contradict, so we do not know what is true and we need to be open minded. Many prominent scientists put their beliefs ahead of what is known and give a completely warped picture to the public. Sean Carroll unfortunately is one of these scientists, he is a very good scientist but when he speaks to audiences he presents metaphysics as physics without explaining the biases of what he is stating.

Agree wholeheartedly with ktx49!

It looks like we live in a predefined time block, as we grow and get older we get into illusion of passing time and try to define as past, present and future. As everthing around us consumes time to reach us, we respond to past events eg light sound vibration stimulai and others observe and react to our past actions not realising the time lag and define it as present. Our past is what we have lived already and future is what not yet lived and witnessed. Kindly correct me if I am mistaken in my opinion about time. Thanks.

Congratulations to sir Roger Penrose for finally winning the Nobel piece prize!

Time before big bang maybe (initial condition):::: Something existed inside all of space, which was created by chance, then since it was so heavy, bounced into a single point and created the big bang?

We have a propensity to think and experience life in a very linear way, past present and future. We have produced all type of theories to support and debunk that perception. Einstein personalized and differentiated our experiences as individual based on how we moved through space. I want expand on that it a different way. Let me first say I am not an expert or physicist, I have not studied the subject at length, however I like to theorize in my spare time, and I take on many universe questions. In my thinking about time I want introduce my Ribbon theory it’s very elementary in its development but I believe some smarter people will get it and help substantiate it. I want to introduce some definitions as I try and build and unscientific equation for my theory. Here they are Te = Time Experienced O = Outcome Ex = Experienced P = Past Em = Emotion Ts = Speed (how quickly time move through our experience Sc = Space constant F = Future As always time theories are often paradoxical. So here are my equations for my overall Ribbon theory Te = (Em)(Ex)- 0 / Sc From an individual level the perception of time changes in its duration and speed based on our emotion and experiences. I’m sure we all have experiences of this. Time seems to move quickly at a major life events, for example it takes forever to plan a big wedding, but when the day comes its over in a flash. As for space I believe it’s unaffected by time and always constant. Time is a ribbon that gets pulled through space based on Emotions and Experiences. Time in itself has no outcome it has no flow or direction it exist as multiple ribbons in space independent and randomly for our experiences. It’s very individual. Outcome is accepted experiences that have no emotion we remember them but they don’t exist in time. P= O - Ex If it still has Emotion its still ribbon(time) in space and a potential part of our future. The Future is our unresolved Emotion yet to be manifested into experience it exists in our past. F= Em - Ex + O So in essence there is many different times to be had. It’s not as linear as we perceive and their existences are infinite. biggest take away is Emotion it has to be added to every theory on time

Time made of making, in Reciproction-recirculation, is Absolutely self-defining Quantum-fields condensation that requires none of the labelling schemes of Romantics, or Physicists with a possessive sense of entitlement because of they know that we don't. It's the New Age version of Pin the Tale on the Donkey, and if that seems offensive, it is only looking in the mirror of symbology and romance...

Einstein's ER=EPR can explain QM by vacuum energy ch=2*3.14*gm^2 which's solution of GR.

I think, considering an individual's consciousness, time can be looked first from his or her inner perspective, and second through his or her percivance towards the outer world matter. From inner perspective from person to person time runs at varying speed, which can be seen in the varying levels of energy and the personality depressions among us. But, still, these variations are bonded together through the second perspective, mentioned above as our percivance towards the outer world matter. This common dimension is one of the infinite dimensions of the time, which is explained by many physicists in the concept of infinite parallel universe. As far as one can see or understand from second perspective time runs in a constant incremental form. After 1pm we can surely predict that time would be able to reach to 2pm and nobody can stop or vary the speed of its progress in the normal conditions of our world. It is constant. We can assume that time is something that has a continuous definite path. A to B to C to D so on. Contrarily, our inner perspective of time is the only anomaly of our universe that has no predictive path. We can say that this path of inner time is completley personal to each individual. It can go to D from A or to Z. This unpredictability of our consciousness can yield many infinite possible and impossible thougths and many choosen infinitie action outcomes. For us time can be defined as the perceivance path that we choose and the remaining paths that we do not choose. The ability of predictiting what we would not choose out of all the options available definitely leaves us with the power of predicting the future. Moeover, Dark matter can also be defined through the nature of time. Dark matter is something that could have exisited in current time if time opted it to. It's something that we left behind that does not belong to this dimension, a dimension that moved forward. Our continuous variation in the consciousness, thoughts and actions in this manner define or act as a border between matter and non-matter. We can prove it theoretically as well. Decayed time of a uranium atom can be predicted. It is something that cannot accelerate or deaccelerate by itself. Therefore, time related to the matter is the same as the time of this dimension. If this point of view makes sense then this idea can help us in researching the dark matter and black holes from a very new perspective.

I have question about the two entangled particles that has always bothered me since time heard this set of reason it goes as follows. If two partials can be entangle how certain one be that particles are the same two particles one started which later measured. The reason goes like this as the distance increase the provability that the starting two particles will entangle with other partials goes thus one has no certainty that one has the same two partials that measured at the final measurement are the same two particles one started with in the experiment? If this is true then the uncertainty increases with distance that one has same two particles one started the experiment? Is this true or false?

World Science Festival, has very brainy guess speakers, talking about Space/Time. Most agree that time travel is possible provided natural conditions happen at once twisting the net space creating a worm hole where light, energy, matter rotates in a funnel like a Whirl Wind or a Tornado were the true speed in the apex has yet to be truly known.

Time moves at the speed of light.. . .Therefore all you have to do is slow up the rate that time flows by adding energy or mass.. . .The greater the Energy Compression, or Mass now the shorter the expanding spiral wavelengths and the time period relative to the perspective of an outside observer.. . . Time is inverse multiplying energy compression +1=0 now -1 dividing expansion like frequency and wavelength.. . .Tap the side of a round bucket of water. . ..Because antimatter is just the opposite phase, or Vector Imploding Energy Compression +1=0 now -1 the constant outward momentum of the light forms the inward force call gravity as time unfolds C2 into the future .. . . We see all objects as they were in the past from when those gravitational light waves were emitted.. . .Independent of the motion of their source's.. . . Now space is a division of Solidity into entropy as time unfolds C2 the second law of thermodynamics.. . .But also as objects free fall into the future E2 will equal a multiplication of Volume +1=0 now at the expense of gravitational potential -1.. . .E2=M2 C4+P2 C2.. . .

Fotini Markopoulou-Kalamara is a qt3.14

I have always wondered about the frozen lake of time theory. Some would thank that if you stand perfectly still then time should stand still but if you give it some thought. your particles are always moving and the world is always spinning so we are always moving. So what if you put some sub atomic particles in space and froze them to absolute zero would time cease and dismiss? We now that absolute zero is unattainable for their is always heat energy making particles vibrate, but if we could remove all heat and the particle no longer moved and the essence of motion was completely removed would not time itself be removed as well. Since atomic clocks meause the microwaves from cesium atoms, I wonder if we could find a way to send some cesium atoms into space and freez them to near absolute zero would we see a drastic change in the time of the frequencys. Just a crazy thought.

I think if we can clone anyone or anything…..we need to clone Albert, we need him now more than ever!!

Time is only how we perceive it. To understand time, don't we have to be able to perceive it from a different consciousness? Maybe we need to remove time (as it is not physical) from the equation. What if there was no "time", how would we measure the physical universe? We can slow down our perception of light (using slow motion videography) so in that act, we are wharping our perception of time. Further if we perceive the universe as light, if we add mirrors and fragment or reflect the path, we are wharping time too. It might be infinitesmal but it is wharping time based on how we perceive it. We need another alternative to time (or the concept of time) to test against time itself. In true darkness does time stop? Do we perceive anti-matter as the culmination of true darkness because density eliminates light and so is anti-matter anti-time? Does time move at all?

A little thought experiment...is spacetime real, as i need no space to travel time, but need time to travel space... ;) Meaning that all we do, when we move is to travel time and create space in that same moment, like entanglement. That would also mean, that all we see, when we look at distant stars, is time past, that actually doesn’t need space to be in, as it belongs to something long past, maybe even our own past - in every direction we look out there. If what we observe is not space, could we travel there at all? This is the reason, why space expansion might be observed to travel faster than light, because light needs space to travel in and therefore must create space (which is only time) before it actually gets there, but somewhat in an entangled way, which concludes, that it happens in the same moment. Now, if time is something connected to an observer, and it expands differently for everyone, it makes sense, how we feel space expanding from everywhere to everywhere (we are not at the center of the big bang, but everything moves away from us). It’s just different timebubbles expanding, which have neo real barrier, like a bubble, but like our lives, connect and go through each other as all of time grows like some kind of foam, growing in time.

If there is google of particles, there are googles of combinations. So ones started, it can't be finished. It even loks as only 'time' could catch time (combining). Are limits existence?

Subtitles please!!!

is it the speed that you are going that slows down time? or the increased mass that you gain by increasing speed? \

Even if time moved backwards we'd still see it at any given moment as though it were moving forward.

So as time is differently perceived by asu. Then as funny as it sounds. Our time zones differentiate plus or minus hour depending on lactation. But a moving object takes up less space , dang my eyes just crossed.

the flow of time is fixed and never paused or reversed ,but time at any instance can be recovered from past at micro ,minute state of time

Time is a matter of Mind (illumination, imagination. illustration). They are not separate from each other. Time also is difference between things and animals, or human,...

Time can exist only when there is motion. Motion is possible because of energy. Energy is motion. It can be a potential or an actual. If everything would freeze in the cosmos and there would be no energy-motion, the time would stop to exist. Motion-energy needs space. If there is no space there is no time either. So the time-motion-energy-space are one. Explanation of entropy as process from disorder to order is misleading. I would say Entropy is a process from diversity to unity. To make it more wordy, i would use a metafore of dissolving rivers carrying different solution into the ocean.

42

When we discus time, we only discus ourself

40:23 - I think that it was just coincidental that relativity came along around the same time that we were coming to have a deep understand of the "micro" laws of nature and recognized that they were time reversible in a way that the macro world isn't. Relativity didn't "cause" that. It was just a matter of timing. Newton couldn't SEE what was going on at the micro level.

31:27 If we're going to talk about what Einstein might have believed I think I have an idea. Time is both personal and universal. Time is the measurement Used to describe the Change of all things and the process it takes to reach that change. To master time is to instantaneously master everything. To change something instantaneously from one state to another without any other process. It's time looping yes it's time eternal yes is time ever changing yes. To explain that you have to add in dimensional theory and assume that even if our universe ceases to exist a universe ceases to exist a universe ceases to exist a universe will always exist. All of that means that eventually are universe will exist again now whether or not if it exists in the exact same state Would be solely up to Chance. To simply explain it time is consciousness time came to be when self awareness came to be. Time is the perception of changing things. To master time is to be omnipotent. That's why it's so difficult to master time. When people Think of time travel they think all of existence defaulting to an original State. But truthfully to master time is to master all States of matter. To be able to create matter from pure energy As well As the ability to convert all matter into pure energy.

1:04:06 ...crocs... '...'

I've always thought of time as a tool to measure decay.

I guess I'm simple minded, but I entertained by this stuff.

Al Stewart: Time passages Buy me a ticket on the last train home tonight