The Holographic Universe Explained

We live in a universe with 3 dimensions of space and one of time. Up, down, left, right, forward, back, past, future. 3+1 dimensions. Or so our primitive Pleistocene-evolved brains find it useful to believe. And we cling to this intuition, even as physics shows us that this view of reality may be only a very narrow perception. One of the most startling possibilities is that our 3+1 dimensional universe may better described as resulting from a spacetime one dimension lower - like a hologram projected from a surface infinitely far away.
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Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Aaron Halevy
Directing by Andrew Kornhaber
The holographic principle emerged from many subtle clues - clues discovered over decades of theoretical exploration of the universe. Over the past several months on Space Time, we’ve seen those close clues, and we’ve built a the foundations needed to glimpse the true meaning of the holographic principle. We’ve moved from quantum field theory to black hole thermodynamics to string theory. We’ve made a background playlist if you want to start from scratch, and I especially recommend catching last week’s episode. But this is tough material, so let’s do a review.
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سلطان الخليفي




    Il y a 7 heures

    real talk, i understood absolutely none of this lol

  • Kurdo Bakur

    Kurdo Bakur

    Il y a 17 heures

    If you know about the 'white holes' then what he says will make more sense. If storing an immense amount of information to a very small(respectively) space with a great amount of energy [black holes] to simulate an entire system(universe) then the likelihood of our Universe just like all the universes is being a white hole increases greatly.

  • admlzulu


    Il y a 18 heures

    you said jigged

  • Spellsinger Texlozome

    Spellsinger Texlozome

    Il y a jour

    So what if we live in a hologram and "True" universe is a higher world of our thoughts/minds/souls?

  • AlexusofAndroid


    Il y a jour

    That skeleton on the upper right really likes your shirt.

  • theuknownawesomeness


    Il y a jour

    Pretty interesting when you consider that Einstein's famous equation {e^2 = (mc^2)^2 + (pc)^2} describes a two dimensional right triangle.

  • HolyWrath


    Il y a 2 jours

    Listen really closely at 14:00-14:30. A parallel 3rd dimension that's "holographic" in some kind of a way. Sounds right to me.

  • borderm3


    Il y a 2 jours

    I am guessing the transformation between them is not a linear transformation?

  • Joey George

    Joey George

    Il y a 2 jours

    No I don't believe it because all these therios are created by small brains 🧠.



    Il y a 2 jours

    The hypnotic music put my mind to sleep while I was trying to understand this.



    Il y a 2 jours

    After seeing this, I want to conformally map my brain onto a very large banana.

  • pspicer777


    Il y a 4 jours

    So, the Flat Earthers were right after all. The lower dimensional representation is 2D. Well I’ll be danmed!!!

  • Franklin President

    Franklin President

    Il y a 4 jours

    Can one or two dimensional objects exist in our universe? How could they, being infinitely thin?

  • Stan TheObserver

    Stan TheObserver

    Il y a 4 jours

    A better "view of the universe from the outside" illustration would help. Where's the big projector shooting out the holograph?..and is the "all info" past and present and future encoded from the big bang? even before the creation of the Universe,our lives are already part of the plan?

  • Gregory Jones

    Gregory Jones

    Il y a 4 jours

    I legit love Matt. His delivery on such brain melting subjects are in such a way that its akin to reading a gritty horror novel. I start with one video and boom I'm into the supertheory of supereverything!

  • Chris Howes

    Chris Howes

    Il y a 4 jours

    I'm going back to my Vine comps.

  • Anon Canada

    Anon Canada

    Il y a 5 jours

    subbed,damn the grid i SO don't get ,gonna have to watch couples more times :\ least i understand someone seems to get it XD

  • Greg Jacques Lucifer's Jizz Gargler

    Greg Jacques Lucifer's Jizz Gargler

    Il y a 6 jours

    the universe is a 1d fractal holographic datastream. discuss.

  • Justin Turner

    Justin Turner

    Il y a 4 jours

    nah man it's made of bananas. didn't you watch?

  • Xerexes Mondavi

    Xerexes Mondavi

    Il y a 6 jours

    Is it possible as in Holographic principle that 4 % of the information at the boundary of the Universe is enough to create Hologram of all the visible matter, then aside from dark energy, over 70% of the rest of the information causes the Hologram of Dark Matter?

  • NoDice


    Il y a 6 jours

    My brain hurts from watching this woah

  • starstruckt


    Il y a 6 jours

    the measure of intelligence is being able to take something complex and make it simple the measure of ignorance is taking something simple and making it complex

  • Dj Fortuno

    Dj Fortuno

    Il y a 6 jours

    I've been a physics nerd since high school. What's really crazy is I understood completely the material in this video. Thanks for the material.

  • Nah mate

    Nah mate

    Il y a 5 jours

    Nobody cares dude, fuck off.

  • K LaCoste

    K LaCoste

    Il y a 7 jours

    Who actually understood this video? My eyes glazed at 9:35 when I was introduced to even more theorems, lol.

  • Justin Turner

    Justin Turner

    Il y a 4 jours

    I think the bananas are the key...but i started glazing at 0:35...

  • K LaCoste

    K LaCoste

    Il y a 7 jours

    I love the sinister music in the background.

  • LordMuffinToken


    Il y a 8 jours is flat?

  • Arbo TM

    Arbo TM

    Il y a 8 jours

    Black holes are our realities projector

  • mamuburaa


    Il y a 8 jours

    Layman's hypothesis about the self-similar fractal-like universe: Could there be particles that are as small to atoms as atoms are to celestial bodies? What if that's dark matter? And in addition, has anyone ever thought of scale as a dimension?

  • Ryan Harvey

    Ryan Harvey

    Il y a 9 jours

    Is there whispering in the background music?

  • MrWeezy312


    Il y a 9 jours

    Look i am a lowly history major you're gonna have to dumb this down by several times, some more banana references god knows i am an ape at heart or at brain as i now know oh and maybe add some with coffee yes that should help

  • antithetical 1

    antithetical 1

    Il y a 9 jours

    So ultimately, Plato may have been right....

  • Dwayne Marsh

    Dwayne Marsh

    Il y a 9 jours


  • Interdumensional Pie

    Interdumensional Pie

    Il y a 9 jours

    Just finished a maths course at uni and in watching this video, the holographic principle seems like a physical representation of Green's Theorem in which a surface integral over a 2D region can be represented as a line integral surrounding that region as if the 2D surface is projected to the 1D boundary of the line. Also wondering why you say that the universe can't be 11 dimensional just because we can't see it that way on macroscopic scales when clearly any degree of freedom can in itself be a dimension. Because this would mean that the extra dimensions can originate from non-commutable properties like the energy quantum or spin which simply are properties that we cannot interact with microscopically.

  • Salujathustra


    Il y a 10 jours

    We are but eddies in the whirlpool. Blink, and we disappear. Nothing is more fleeting than appearances, and yet we hold onto them and build an ego around and above it, in terms of the memories of the past, of the dead matter. Most of us are tombs already!

  • anthony cornejo

    anthony cornejo

    Il y a 10 jours

    T500 brain... My brain is hard stuck plat

  • codematrix


    Il y a 11 jours

    Hi Matt, have you looked into a group called Quantum Gravity Research? They are coming up with some amazing perspectives about our reality in 3D but it drives mainly from an 8D lattice -> 4D quasi lattice -> 3D quasi lattice. They are doing away with string theory because it does solve all problems and fails miserably in others. I would like your perspective in this new emerging science. They are trying to unify the universal quest to a set of theories that explain our universe. Keep up the great work. Your videos are awesome.

  • jim twisted

    jim twisted

    Il y a 11 jours

    One problem might be that the surface is growing because the universe is and what did the surface look like at the big bang?

  • الكون العظيم

    الكون العظيم

    Il y a 11 jours

    The problem is that FRdownload has not put the translation feature in the video Please translate the video into Arabic The problem is that FRdownload has not put the translation feature in the video

  • Fabrizio Giordano

    Fabrizio Giordano

    Il y a 12 jours

    WE LIVE IN A SUPERMASSIVE BLACK HOLE, THE WARPS OF SPACETIME IN THE BLACK HOLE ARE SO INTRICATED That little things experience a flat portion of the space time

  • Tyler Allen

    Tyler Allen

    Il y a 13 jours


  • Szymon Perz

    Szymon Perz

    Il y a 13 jours

    Hi, i have a strange question.... you always say we are living in a 3 dimensional universe with 1 time dimension... Can we have universes more time dimensions? What would that actually mean then?

  • AppleYou


    Il y a 14 jours

    Why would anyone consider a black hole as a volumetric object? It is a hole after all, not a sphere.

  • AppleYou


    Il y a 11 jours

    Preetesh Mistry thank you makes sense - it is sort of like a 3D cavity-version of a 3D full sphere

  • Preetesh Mistry

    Preetesh Mistry

    Il y a 11 jours

    Thats y it doesn't matter from where u see a Black hole... It always appears to b a hole.. as its a 3d object. Had it been 2 d then the side view would have been a straight line!

  • Preetesh Mistry

    Preetesh Mistry

    Il y a 11 jours

    Ummm..... No! We live in a 3 D space. And what's the 3d of a square? A cube! Similarly.. the 3d of a hole would b a sphere! What we see is a hole because we don't understand the complete nature of the black hole!

  • Nathan Wilson

    Nathan Wilson

    Il y a 14 jours

    “Come to me, all you who are weary and burdened, and I will give you rest.” - Jesus Christ (Matthew 11:28 NIV)

  • J A C C

    J A C C

    Il y a 14 jours


  • Gary Mathis

    Gary Mathis

    Il y a 14 jours

    Sad. Lacking any new fundamental discoveries, Physics has been reduced to a mere speculative "science."

  • Bier


    Il y a 14 jours

    But how is this all possible if we can locate multiple black holes?

  • Peter Alton Mertz

    Peter Alton Mertz

    Il y a 15 jours

    Probably one of the most irritating parts of physics is the explanation of spacetime. There is always the explanation of three dimensions up+down, right+left, and forward+back. Which of course is right. Then one goes on to add the other dimension of time and states two choices, past, and future. That is really not right, here is why… If one uses a two-dimensional compass and divides the possible directions to travel, into 360 points. Put that on a globe and the possible points can then be divided into 129,600 points. So on a four-dimensional globe (time), how many points does it have? Is it 129,602 or 46,656,000 points? Because it is so ingrained in our brains to talk about time in a one-dimensional context as a linear action, the arrow of time we forget to think of it as the fourth dimension. String theory got its start when the German mathematician Theodor Kaluza and Swedish physicist Oskar Klein independently developed the Kaluza-Klein theory in 1921, which used the fifth dimension to unify gravity with the electromagnetic force. Their approaches were later found to be at least partially inaccurate, however, it did demonstrate a very clear mathematical similarity between the two forces. My question is this, do we really need the 5th dimension just to include the electromagnetic force, when we have so many points of direction? From there, sting theorists kept adding dimensions and never really quite got it right. This might seem like a trifling point, however, it starts to make sense once one visualizes an expanding Brane moving through the four dimensions.

  • dimel russell

    dimel russell

    Il y a 16 jours

    Boys, I’m now one of the few people who can comment that I get these videos Focus on nothing but what Matt is saying, DO NOT let your mind stray and you can understand too 🙂

  • Jari Haukilahti

    Jari Haukilahti

    Il y a 17 jours

    Maybe the curvature is just only so slight that there are just only 2 slices then we would not see the curvature or can we ?

  • Dom Verdi

    Dom Verdi

    Il y a 14 jours

    Nope. Just another string "theory" stupidity. Real scientists proved the universe IS FLAT using data from new observatories in the last decade. This is what string "theory" folks do. Their Math is not working in the actual universe with the actual number of dimensions, so they want to force reality to adapt to their world view. Recently Ligo detected gravitational waves and proved it is expanding in the space in 3 + 1 dimensions and that there is no signal of these extra dimensions. Also Cern could not detect extra dimensions predicted by string "theory". ST is a colossal waste of time.

  • Richard Matthews

    Richard Matthews

    Il y a 17 jours

    It was just really hard for me to follow this video also. I am very interested in unanswered questions like this in science but who knows, we may already have the answer and have by passed it so many times. Maybe we are making to much out of all this and we are making the question way to complex to be answered. This video also brings me to the big bang theory and how I do not believe that at once there was absolutely nothing and then a huge bang went off and sent masses of particles out into space. I don't believe that the universe was ever empty. It would make more sense to say that a black hole opened up on one side of the universe and our solar system was vacummed into the area of the universe that we are in now but there is a problem with that theory also. A black hole completely engulfs any planet, star, or mass near it. If a black hole does not allow anything to escape and if a black hole only sucks in and destroys everything how did we come out of the other side of the black hole. I guess the answer to that is we never came out of the black hole. Were still in it. It's to much for our minds to process. That's the problem. We do not understand the concept of how the universe works and we may never understand it.

  • Richard Matthews

    Richard Matthews

    Il y a 17 jours

    I don't know that I believe any of these theories. No one really knows or can explain what reality is. Reality is just reality. It's there and we use reality along with our senses to know that something is there. When someone is grilling hamburgers on a holiday, we know they are grilling out because we smell the food cooking. We can not see it, but we know its happening because one of our 5 senses describes it through predictions. I have just started learning about the hologram theory, but my first example kind of makes the simulation theory not exactly right because they say 'how do we know if something is really there when we are not looking at it?' If we here music playing off in the distance we know that someone is playing music somewhere and usually the person or people playing the music are not to far away. When it's raining outside if we were to close our eyes the rain doesn't just disappear. We do not see it but we do still feel it, hear it, and smell it. That is how the simulation theory can be tested. Just because we do not see something does not mean it is not there. As far as the hologram theory, I don't completely understand that theory. I can rewatch this video over and over again and I still do not understand how they are explaining facts that would lead us to believe we are in a holographic universe. That's like coming up with the theory that we are 3 Deminsional. What if we are not 3 deminsional, but instead we are 4 deminsional. How is a Circle concidered 3 deminsional when there are more deminsions to a circle than just 3. A circle has no flat surfaces, no points, no edges but instead when we look at the deminsions of a circle we measure it by the radius, the width, and the length. Are we completely wrong about 3 deminsional. When we infact can be measure a circle by the radius, the width, the length, and the circumference? It's just to far for the human mind to venture out and think about. This is just something beyond the human minds capability of understanding. That doesn't mean we are wrong for trying to answer the question. It is just something that we may not ever know.

  • Cynical Aggression

    Cynical Aggression

    Il y a 18 jours

    The real red pill?

  • Geoff Speedie

    Geoff Speedie

    Il y a 19 jours

    lol that merch aint goin no where. GOT is effectively dead as a beloved franchise

  • OMG We're screwed

    OMG We're screwed

    Il y a 19 jours

    Love the content, hate the guy

  • Jean-Paul Teitu II

    Jean-Paul Teitu II

    Il y a 19 jours

    Narrator is boring af. I bounced back immediately

  • Ibtissam Nour

    Ibtissam Nour

    Il y a 19 jours

    traduction en arab please

  • Timothy Gibbens

    Timothy Gibbens

    Il y a 20 jours

    Here, I'll share it with you. In every experience you have, it only happens in the universe of your own "universe". When you accept that things are cyclical in nature, for example birth growth death, or day night and in between, or start middle end, more relevantly though the rotational fields around planets and stars and galaxies and universes and the multiverse right down to the rotation of electrons and atoms. So you divide your own experience into those concerned with it, those outside of that are living another universe in what appears to be the same but is not, until it crosses into another or many others and this is the level that it occurs at as humans but at differing levels it is the same just as all physics is determined by the nature of a cyclic environment.

  • Erik BuddhaTao

    Erik BuddhaTao

    Il y a 20 jours

    Your description sounds like gibberish compared to David Bohm's conception of the holographic universe. Seriously, read the comments. Nobody has a clue as to what you're talking about. I guess they could all be really dumb... or your video could just be really wrong. Why don't you do an episode on Bohm's work? No offense. Usually your video's are very good.

  • Eric D'Aleo

    Eric D'Aleo

    Il y a 20 jours

    sunspots are black holes according to the holographic principle

  • Tens


    Il y a 20 jours

    This channel makes no sense anymore

  • Rob Kirby

    Rob Kirby

    Il y a 21 jour

    Halfway through this video my head exploded... 🤔

  • Moni Toni

    Moni Toni

    Il y a 21 jour

    Forget about the Flat Earth! The whole Universe is Flat!!!

  • deadboy600


    Il y a 22 jours

    If you think you understand this, chances are you understand it less than the person who says they don't understand it.

  • Stacy Caruso

    Stacy Caruso

    Il y a 22 jours

    A lot of gas.



    Il y a 22 jours

    How does Pewdiepie crossed million and this guy doesn't 😭😭

  • T M Chaos

    T M Chaos

    Il y a 22 jours

    Is that a Coheed and Cambria shirt he's wearing?

  • Peter Anderson

    Peter Anderson

    Il y a 22 jours

    Maybe we are all a part of a dimensional “Holographic Universe” where the information stored in our Universe comes from another Dimension within a dimensional field. Check out for more thoughts.

  • Psycho Psyte

    Psycho Psyte

    Il y a 22 jours

    Existence expands and grows.

  • shoesncheese


    Il y a 23 jours

    Every time you say 3+1 or 2+1 I think of Clue.

  • Cmdr Benkai

    Cmdr Benkai

    Il y a 23 jours

    Is our reality rendered from a 2+x holographic Bios? We rendered 3+1 realities in computers all the time.

  • trev moffatt

    trev moffatt

    Il y a 24 jours

    Look at the Mona Lisa it appears three dimensional, put a magnifying glass to it, you see it's a bunch of smudges. But in reality the Mona Lisa is just a bunch of smudges on a flat two dimensional surface, the Mona Lisa is an illusion. However, what's creating our holographic illusion, a great artist in another dimension? Or is it our own consciousness interacting with the micro universe? We and every conscious entity in the universe are collectively generating reality, albeit at some automotive unconscious level. A kind of mass collective unconscious telekinesis.