Does Space Emerge From A Holographic Boundary?

Місяць тому

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Space seems fundamental. To build a universe, surely you need something to build it on or in. Many, maybe most physicists now think that the fabric of space emerges from something deeper. And perhaps the most existentially disturbing such proposal is that our 3-D universe is just the inward projection of an infinitely distant boundary. A hologram, or sorts. Let’s see how that can actually work, and what the holographic principle really says about the “realness” of this universe.
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Written by Matt O'Dowd
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КОМЕНТАРІ: 1 800

@foxglovelove8379 Місяць тому

For the casual viewer feeling like they're having trouble following along, just know that I did my master's thesis on a topic based on the AdS/CFT correspondence, and I still feel like I struggle to properly wrap my head around all of it... Kudos to PBS spacetime for fighting to make it more accessible

@MarcoLandin Місяць тому

I suspect even the most celebrated theoretical physicists have trouble visualizing much of this material, as it is literally in other dimensions and at infinite distances. Me, I'm just fascinated that there exist people who can figure all this stuff out. It's mind-blowing

@lethargogpeterson4083 Місяць тому

Thank you.

@bardsamok9221 Місяць тому

"Masters" thesis is a bit of a pretentious misnomer. There is no mastery of any subject at that level, just highly simplified understanding so naive university students can figure it out while chugging beers and playing Minecraft.

@ZakiAsir Місяць тому

@@bardsamok9221 bro dropped out 💀💀💀

@ianhesford Місяць тому

@@ZakiAsir😂 yep

@jajssblue Місяць тому

Those Physicists, always projecting. 😂

@jmcooney2000 Місяць тому

Brilliant 👏

@corgi42069 Місяць тому

Hey-oo 😂

@EJ_WA Місяць тому

🤦‍♂️

@enragedares5992 Місяць тому

😂🎉

@patbluetree4636 Місяць тому

Well played . 😁

@LofiHobbit Місяць тому

Who else watches this weekly but has no idea what's being talked about? 🙌

@JoyThiefTheBand Місяць тому

Eventually, through audio osmosis, it will make some sense, lol.

@laurabutler9978 Місяць тому

Sleep will absorb something, I hope.

@nunyabiznaz9593 Місяць тому

I’m usually very high…

@adamwishneusky Місяць тому

Not always over my head but definitely this one! 😆

@ObsidianMonarch Місяць тому

Social engineering stickers are in place to do away with abstract thought. Meanwhile kids today wouldn't recognize #PROPAGANDA if it was advertised on UKposts...

@thecodewarrior7925 Місяць тому

The whole “size scales lead to a third dimension” thing never made any sense no matter how hard I tried, but your example of the “effective radius” and the differing shell sizes finally made it click! Absolutely wild!

@frun Місяць тому

What if there is only one shell, evolving in time, so called RG time or renormalization group time?

@Exodus5K Місяць тому

I didn't fully understand this part. Is the idea that the system treats similarly shaped configurations at different scales similarly, and this creates nesting levels reality at different scales which subjectively is perceived as 3d? Again, I'm not sure if I'm understanding this correctly, but if it is then why only 3 spatial dimensions?

@anonymousaardvarkinnigeria8721 Місяць тому

Legendary science communicators!

@maxmccann3030 Місяць тому

My comment is @exodus

@DrDeuteron Місяць тому

@@Exodus5Kyes, except formally similar, not colloquially similar.

@saagartrivedi4190 Місяць тому

Hey Matt et al., I've been a viewer since y'all started back in 2015. Never commented, and I wish I had the money to join the Patreon, but I just wanted to say that I appreciate how much this series breaks my brain every week. I'm a big Brian Greene guy, and, even so, I feel as though I understand so little but love the content so much I can't stop myself from coming back. Thank you!

@pbsspacetime Місяць тому

thank you for your many years of support!

@batmanchurch Місяць тому

Q@@pbsspacetime

@cosmnik472 Місяць тому

R @@batmanchurch

@ragevsraid7703 Місяць тому

my brain is breaking so hard i might have to take this one in parts

@richardfarland Місяць тому

Brian Greene is a smarmy New York ___ in comparison to Matt. There's no artiface with Matt. It's typical spartan, self deprecating Aussie delivery. With Brian, I can see his enthusiasm for teaching, but that's tarnished by the fatuous showmanship needed to pander to his Hamptons benefactors.

@napotronix Місяць тому

I watch this channel for ages now and usually I feel pretty smart because I understand the gist of most episodes pretty well. This episode makes me feel oldfashionedly stupid.

@ontoya1 Місяць тому

That's exactly what I thought 😂

@nobody.of.importance Місяць тому

It's definitely one of the more difficult concepts in spacetime, it seems. I like to think I'm pretty good at this stuff but this whole episode was just the smell of my brain melting.

@HansStrijker Місяць тому

I came to the comments to write exactly this. 🤣

@das_it_mane Місяць тому

Which part didn't you get?

@HansStrijker Місяць тому

@@das_it_mane Yes. Well not entirely true. I understood the solar eclipse shirt section.

@pembrokeisland9954 Місяць тому

That was quite interesting. Not sure how far you really can take the analogy, but coming from an IT background, that "multiple seemingly different models describing the exact same thing" made me immediately think how you (in principle) can describe an application by giving its behavior and functionality, OR by listing its source code, OR by describing how the electricity flows through the hardware circuits. Vastly different descriptions that seem to have nothing in common, yet all describing the exact same thing. Nor can you really say which of these is the "real one" as it's more a switch in your point-of-view and which description fits your purpose. If it's anything sorta-like this, yes, makes sense. Though, always have to be careful about analogies, especially when they are of something outside your own field of expertise 🙂 but can be a useful tool when trying to understand things.

@Hyperbolic_G Місяць тому

This description made things click

@geoffwales8646 Місяць тому

Also interesting to me that software is just the language encoding physical processes, so that we can manage those processes. It doesn't 'do' anything.

@SuperCharlie-fb4vw Місяць тому

Thanks for pointing out these dualities in IT. Your point is so interesting!

@lucascipriano1665 9 днів тому

It's the concept lf abstraction, when he used the analogy of 4 "pixels" clumping into a larger one to produce the same information, my head immediatly went there

@PenDanger2 Місяць тому

I understand less than 1% but I am still so happy that this dude is talking and I get to hear it.

@arsenelupiniii8040 Місяць тому

English accent sells a lot of BS!

@BlueKitsune72 Місяць тому

@@arsenelupiniii8040im pretty sure that's a kiwi accent.

@moldman5694 Місяць тому

@@arsenelupiniii8040 Australian

@Cruxvae Місяць тому

As somebody who majored in the humanities because I am allergic to math, I'm amazed by how much I've learned from this channel. I never thought I would understand so many of these principles, even on a surface level.

@OllamhDrab Місяць тому

Heehee. Sometimes the ability to calculate or do math isn't the same skill as comprehending or teaching the material conceptually. Probably why I'm not in science as a career though, good with concepts and communication, would be miserable about all the mental effort it takes for me to memorize things or keep numbers straight. A Relativity class teacher once made this clear, being like, "You're the only one in the class that understands the material, but you remember two times three is six, right?" Oops. :)

@michaelearnest1983 Місяць тому

Well, according to the video, if you understand something on a surface level, then you understand it completely!

@davidwright8432 Місяць тому

I think you aren't allergic to math, at all. You're rightly allergic to badly taught math. A depressing amount of K-12 math is dismally badly taught.

@clarkthomas354 Місяць тому

So basically we really don't know how the universe works.

@WREFMAN Місяць тому

@@OllamhDrabheehee

@blodbotina Місяць тому

Can't wait to get reminded again next time why this is the best channel I've ever discovered.

@ericdavison6186 Місяць тому

Have you got a minute? 😊

@Awesomes007 Місяць тому

Yeah. It's unreasonably effective.

@arsenelupiniii8040 Місяць тому

Brittish accent! Makes people feel smarter, when in reality it is ALL bs!

@Dampfaeus Місяць тому

You know a topic is truly complex is PBS needs to make a playlist for it 😀 I mean, he explained the new paper about their possibly not being a Singularity at the center of a black hole in just one episode.

@DangerousDac Місяць тому

This is the first video that seems to have actually succeeded in getting me to understand the whole concept of the Holographic principle.

@supreetsahu1964 Місяць тому

I totally understood all that

@ColeDedhand Місяць тому

Yes, so did I. Absolutely.

@enragedares5992 Місяць тому

I now have a complete understanding 😊 ...... of what a person who does not speak English experiences when watching a video in English 😂

@ShippyJack Місяць тому

Great, could one of you guys summarize it for me in your own words? Cause I have no sweet clue!!!

@rackmarkus Місяць тому

@@ShippyJack42

@LuisSierra42 Місяць тому

@@ShippyJack star trek

@theviscount-ke2ml Місяць тому

When I watch PBS Space Time, I really do think I should be outside bashing rocks together

@arsenelupiniii8040 Місяць тому

Brittish accent has always had that effect. They sell a ton a crap that way.

@JK7H Місяць тому

Reject physics, return to the wild

@LeeLynch1 29 днів тому

@@arsenelupiniii8040 He doesn't have a British accent :)

@addyyyyg Місяць тому

First heard of Erik Verlinde’s entropic gravity/holographic universe theory probs 7-8yrs. ago in the context of him arguing that dark matter/energy are so difficult to detect bc they don’t actually exist, but rather are emergent products of space time geometry-it was so elegant & intuitive that I was sold then & there 👀

@lordemed1 Місяць тому

'Everything we know., or will know will ultimately be emergent

@grayshadowglade Місяць тому

I had exactly the same reaction from his lectures on it. The math isn't perfect because it challenges existing assumptions but the concepts are incredibly elegant.

@TheRABIDdude Місяць тому

Great episode! I watched all the old holographic principle episodes when they first came out and they were mind-blowing but very heavy and hard to follow. You did an incredible job summarising and re-explaining the whole thing here in simpler terms.

@toby8814 Місяць тому

As a layman that likes thinking about these topics but lacks the terminology, and in depth study, I find this channel uniquely inspiring. Keep up the good work, I might share this channel if it's alright.

@jmunt Місяць тому

Dang, I didn't notice it on the last episode but the new credits visuals and music are incredible!

@polarwind77777 Місяць тому

Great episode! Your explanations and the artist’s depictions make a formidable combination. Looking forward to the next ones you teased!

@liamfinlay2039 Місяць тому

I can't help seeing our true source selves dance on the cosmic Plato's cave wall, where the story is flipped, the shadows are the casters of players, not the other way around. The projector is inside the cave, made from the soup of fundamental shadow code, projecting an emergent representation that we consider... ...Reality. Additional: Science channels like this have filled a void within me, thank you for projecting some wonderful education and perspectives my way

@sakismpalatsias4106 Місяць тому

Always a pleasure listening to Matt. He structures the concept in a understable method and doesn't dumb it down. Moreover, he provides the definition and notations; to keep up. Either to learn or to brush up . Cant wait to hear the reast of this series.

@NontrivialZetaZeros Місяць тому

He does dumb it down, sorry.

@sakismpalatsias4106 Місяць тому

@@NontrivialZetaZeros yes obviously. But this is still a 15 min podcast; at best. Not the lecture itself. He is still tailored towards a specific audience. I mean how many people actually understand what a boundary or bulk is. Entanglement of the field, Lorenz transformation in QFT.

@phelan8385 Місяць тому

@@NontrivialZetaZerosit's simplified, not dumbed down.

@vu4y3fo846y Місяць тому

This channel never fails to blow my mind

@BytebroUK Місяць тому

Aw Matt! It's been a while since you did one of your 'deep dives' into a subject. They are what first found me your channel way back when. Looking forward to seeing this one through :)

@Qsie Місяць тому

Been a while since I've watched, I love your new intro!! 💜

@ZoonCrypticon Місяць тому

My most favourite astrophysics presenter!

@XEinstein Місяць тому

Oh finally! A Spacetime video about entropic gravity is coming up! Can't wait for that one.

@worstedwoolens Місяць тому

I'm very excited to see you guys picking this topic back up! Looking forward to this series.

@TeodorAngelov Місяць тому

Back with a bang! Somehow I understood this recap better than the individual episodes. Maybe I have levelled up or this channel has :) What a duality!

@rachel_rexxx Місяць тому

Yay! This one was complex enough that it will require revisiting! 🎉🎉

@GeorgeJoubert-id2cv Місяць тому

Short answer: Yes Long Answer: Yes but longer

@adamb89 Місяць тому

Right answer: Yeeeeeeeeeeeeeeees.

@GeorgeJoubert-id2cv Місяць тому

@@adamb89 no

@corgi42069 Місяць тому

@@adamb89 it's more like "yeeeeeeeeeeessssss....?"

@Aragorn7884 Місяць тому

That's what she said? 🤔😏

@BasicPsychology101 Місяць тому

😆

@Geffde Місяць тому

So glad you’re covering this topic now. Can’t wait for the next episodes and really hoping you’ll dig into more of the machinery explaining the why and how.

@Faifstarr Місяць тому

Best video in a long while for me. Been trying to understand this, this really helped.

@ArielTriangle Місяць тому

Reminds me of an experience I had once on Salvia Divinorum. Great video and explanation!

@tatearnold5050 Місяць тому

Please share more!

@philipmurphy2 Місяць тому

Its PBS Space Time O Clock folks

@itemushmush Місяць тому

you are an amazing communicator. not sure theres anyone else on the platform with such skill

@willd4686 Місяць тому

Thanks Matt! This episode gave me some useful new terminology. True dualities and approximate dualities, super useful

@flo0778 Місяць тому

finally back to headache content, thanks

@TheAmazingBendini Місяць тому

Extremely excited for this series of upcoming episodes!!

@marcm. Місяць тому

I've always been fascinated by this particular concept of the holographic universe, ever since it was first proposed in our modern understanding of physics. I'm very happy that it has gotten such a great explainer in a readily accessible video. You have done such a great job explaining so many concepts that I find so enjoyable to listen. It's like listening to one of your favorite stories, only this time told by one of the greatest orators and storytellers, it is just simply a pleasure)

@ReiHinoSenshi Місяць тому

So love how he still keeps the ending like you can feel any moment now he's about to say "Space Time" as I usually say it at my screen lol.

@bobjason7540 Місяць тому

It seems less like we are moving to the future, but that the future is pulling us towards it in a fundamental way that affects the present.

@EleneDOM Місяць тому

I sometimes have a feeling like that, almost as if we are being physically pulled. I wonder if it's meaningful....

@grayshadowglade Місяць тому

That's not a bad way of thinking about it. I like to think of it as the 'Now' falling into the 'Future' faster than the 'Past' can keep up. So we get this lovely illusion of a 3d reality within the 'Now' as we observe it's 'Past' like a wake on a cosmic sea.

@Om92OneMedia Місяць тому

@bobjason7540 , the branch of philosophy called Teleology builds out frameworks supporting the hypothesis you state here... Not that I've really dug into Teleology all that much, (yet)...

@giordano5787 21 день тому

Yea@@EleneDOM

@Josh-mu7qy Місяць тому

Alright you did it Matt. I usually loosely follow (definitely not fully understand) a good 80% of what you talk about. This one was definitely under 50%. But please keep doing it. This is why we watch your videos. I'm going to watch the previous series on the holographic principle then re-watch this.

@TheJohnmmullin Місяць тому

Leonard Susskind has several good talks that explain this more easily. “Easily”.

@Josh-mu7qy Місяць тому

@@TheJohnmmullin lol I have seen them. He doesn't even attempt to dumb down. Granted he's typically speaking to colleagues.

@TheJohnmmullin Місяць тому

@@Josh-mu7qy the math heavy talks (Stanford lectures, etc) I literally do not understand word one. He might as well be speaking in another language (which, in fact, he is). His black hole war talks are much more accessible - I grasped almost 10% 😂😂

@Josh-mu7qy Місяць тому

@@TheJohnmmullin his talks on quantum entanglement and black hole entanglement are incredible. It's literally his theory and I've never heard anyone else talk about it. Would love for Matt to do an episode.

@TheJohnmmullin Місяць тому

@@Josh-mu7qy surely there’s an episode on it?

@LracElosetab Місяць тому

Nice, pretty much what I was thinking, about emergence and entanglement and information theories. Excited for this upcoming series

@bigmouthfisheyes Місяць тому

Great videos. Always interesting to watch and contemplate.

@Kyzyl_Tuva Місяць тому

The best explanation of CFT and the Holographic Principle I have ever seen is Raphael Bousso’s

@VisMajorr Місяць тому

Emergent gravity is the most important concept in modern physics, and most likely the true path to the theory of everything!!! Thanks so much for covering this Matt et al.!!! I am beside myself waiting for the next episodes! I sincerely hope you guys can shed some light on how the implications of ER=EPR and emergent gravity can reconcile general relativity and quantum mechanics WITHOUT invoking this fictitious "dark matter" stuff ;)

@lordemed1 Місяць тому

there will never be a theory of everything. Bet the house on that.

@grayshadowglade Місяць тому

@@lordemed1 Oh I disagree heartily... there is a theory of everything out there, we just probably aren't going to like it whole lot when we find it. 🙂

@javie5080 Місяць тому

I love that PBS spacetime is becoming more advanced and using info taught in past videos to create a basis for new complex videos. Its like a class I've made it to the end of somehow.

@CoryVirok Місяць тому

Great Episode! Reminds me of the things Wolfram Physics is starting show - i.e. space as an emergent property of entangled computation. I'm not a physicist so hopefully I got that right. But I'd love to see you guys do an explainer on Wolfram Physics some day.

@Itachi21x Місяць тому

Funny, I just recently watched one of your earlier episodes where you touched upon the topic. The AdS/CFT correspondence is one of the most interesting topics in physics.

@LisztyLiszt Місяць тому

What's with the foreboding background chord...?

@ringledinglebingle Місяць тому

Really though. I can’t concentrate on anything he’s saying because of it.

@kaia9154 Місяць тому

I'm having a hard time focusing on the video because of this as well :(

@richardconway6425 Місяць тому

I think it's intended to make us feel even more insignificant and lost in this vast universe than we already are.

@rexmundi2986 Місяць тому

Was that on purpose? I thought it was some kind of ghastly feedback, or audio artifact or something. Pretty distracting.

@Crootcovitz Місяць тому

Was it always there? I think there was always some background sound there, but this one is particularly distracting.

@AlexanderGee Місяць тому

@9:30 This is like the image pyramids we use in computer vision. It's cool to see the analogs of concepts popping up in different places

@be5on Місяць тому

It would be really neat if you guys could include references in the description field. It saves me looking around for them. Thanks for the great content. Keep up the excellent work.

@jesuschrist2284 Місяць тому

Never look directly at a solar eclipse tshirt

@tylerknight99 Місяць тому

I hope Spacetime sells me ISO 12312-2 certified sunglasses so I can decide if I want to buy the shirt

@arsenelupiniii8040 Місяць тому

Never listen directly to brittish accent, lest you wanna buy some BS!

@jesuschrist2284 Місяць тому

@@arsenelupiniii8040 what about australian or newzealand accents?

@TheJamiescottie1 Місяць тому

Kinda off-topic: Just read about the newly observed dark galaxy "Nube" which seems to be a highly challenging observation with regards to dark matter models, which have been discussed just recently on this channel... Might be a video opportunity for an update! Anyway, great content as always Spacetime! :)

@shiijei2638 Місяць тому

Got damn PBS, you guys have been around forever, glad to see you still here.

@andyc8707 Місяць тому

I'm just some uneducated dude, but through life, I have had theories and the more time passes the more those theories are being taken seriously, this is one of them!

@highstax_xylophones Місяць тому

So what I got from this is a black hole all along has been that last little spot seen when old tvs were turned off.

@tobiasweber-ingold2560 Місяць тому

Quantum entanglement across many scales. Can't wait for that episode!

@frun Місяць тому

It may be, that there is only one shell, evolving in time. Your motion through the shells in radial direction gives the appearance of time - quantum entanglement. In this sense galaxies are past us.

@murraymacpherson7528 Місяць тому

Granted I've had a few drinks but this is the first episode for a while where it's been completely over my head. Not that my PhD was ever in physics to begin with.

@LowellBoggs 27 днів тому

This is a fascinating episode with just the right presentation level. Thanks. I am looking forward to more episodes on this subject

@ozzymandius666 Місяць тому

I think we continue to misunderstand space altogether. From the fact that a spin 1/2 particle needs 720 degs of rotation to come back to its starting point, to the fact that entropy is proportional to area, and that the area of a one plank volume sphere is 4 plank areas. Also, that the "stiffness" of spacetime, that defines how fast gravitational waves move through it is related, in an unknown way, the the permeability and permittivity of space. We are missing something very fundamental, IMHO, and when we find it, we'll no doubt to a face-palm.

@tim40gabby25 Місяць тому

"do a face palm" so annoying when the punchline gets scrowed :)

@seadog8807 Місяць тому

Oddly enough, was watching the episode wondering if spinners would be a useful topological description in navigating a holographic dimension.

@davidhand9721 Місяць тому

Something I wish I was told a lot earlier about spinors: they are not geometric objects. They are transformations. You can stop wracking your brain trying to picture them; they just are not living in physical XYZ space. I highly recommend the series "Spinors for Beginners" by Eigenchris here on UKposts. You can understand them perfectly well without any modification to your understanding of space.

@davidhand9721 Місяць тому

To clarify, rotating a spinor 360 degrees turns its object all the way around, but the spinor itself is its opposite. The additional full turn leaves the spinor and the object both as they were.

@ozzymandius666 Місяць тому

@@davidhand9721 The experiment has been done with electrons. Electrons transform as spinors, under SU(2), as opposed to SO(3).

@billschwandt1 Місяць тому

I just wrote a paper on the stack about how the space between dark lines in the Double Slit experiment can be changed by what material you make the Slits from. And the dark lines aren't lines, they are a piece of a circle. Great presentation.

@subliminalvibes Місяць тому

As a holographer, I am constantly fighting circular diffraction patterns and interference.

@billschwandt1 Місяць тому

@@subliminalvibes what's a holographer?

@TlalocTemporal Місяць тому

@@billschwandt1-- I assume someone tmakes holograms.

@quillaja Місяць тому

@@billschwandt1 photograph : photographer :: holograph : holographer

@subliminalvibes Місяць тому

@@billschwandt1 like a photographer, but I make holograms with lasers. Are you familiar with holograms and how they relate to laser interference?

@thalianero1071 Місяць тому

This reminds me of smooth functions, green’s theorem, and differential equations; where some properties of a function over a region are reflected in other properties of that function on the region’s boundary

@JoeKeeler1 Місяць тому

I love coming across one of your new videos. Make more if possible.

@ChalkyWhiteChalkyWhite Місяць тому

exciting stuff on the horizon !

@mcorvus4530 Місяць тому

Completely off-topic but a question I had: If bosons can be occupy the same space, and the W and Z bosons are more massive than even iron atoms, and we know that you can create a black hole from concentrating photons... Can W and/or Z bosons create a black hole if too many of them accidentally overlap? How many W/Z bosons would you need to accidentally make this black hole (even a small one)? And is this at all likely to accidentally occur?

@kindlin Місяць тому

The trouble is manipulating W/Z bosons into any actual location. They exist on such short timescales, you can do almost nothing more than identify their brief existence.

@spiderjuice9874 Місяць тому

The spring equinox for North America occurred a few days ago on March 19, 2024, at 10:06 p.m. CDT. Good Friday occurs exactly 10 days after the equinox on March 29, and the total solar eclipse occurs exactly 10 days after Good Friday on April 8. In other words, Good Friday lies at the exact mid-point in time between the equinox and the eclipse.

@Krack2805 Місяць тому

i usually get most episodes but this one Im gonna have to re-watch lol

@seditt5146 Місяць тому

It feels like gravity may turn out to be the result of standing wave nodes on the surface of a blackhole which we are the projection of. Basically, Faraday waves on the boundary and we are on a sheet of time falling towards the singularity while everything we look out towards appears to be expanding. Entanglement would be the result of these nodes as they are created by a single wavefunction on the surface and are the result of all wave functions interacting to create the effect of nodes and anti-nodes. It would suggest the CMB is actually the Event horizon we are looking back towards and using it we should be able to calculate various properties of the blackhole we are in. The CMB is so uniform as things reach maximum entropy right before falling in.

@Fangman123789 Місяць тому

Wait, so could that also explain why we see the beginning of the universe as infinitely/extremely dense and ours is not dense in comparison? Causing us to believe our universe started off that way when it was really just the projection from the other plane and ours has a different "beginning state" that would give us different constants possibly? Where ours as it became a supermassive blackhole the total density dropped? Or am I talking nonsense, because I admit the holographic universe and this holographic boundary concept is above me, whereas usually I feel with or above the curve a little on most concepts on this channel. Could that concept you said also implicate that due to the observance of multiple black holes, would that basically be the multiverse theory in a half true manner? Except rather than concept of all possible outcomes existing and infinitely varying universal constants instead you have multiple very similar universes due to them all being black holes. Also, would the predicted ratio of matter to antimatter, and its slight imbalance, at the creation of the universe still be a relevant meaaurement? If so, I wonder in what way it would manifest itself within the concept of reality you said. Again, sorry if these are dumb questions, Im struggling with some of these concepts lol, but it weirdly feels good. The more contradictions with our theories we find with the JWST and the harder to conceptualize these topics become the giddier it makes me, for so long I think many casual followers (or maybe just myself 😅) of theoretical physics, astrophysics, astronomy, etc have felt like many of the mysteries were solved, like we were almost done or close to the final step lol. But our knowledge is like an expanding circle, as we grow the circumference of our knowledge we exponentially increase the volume of our ignorance 😂. I stole that from somewhere and probably paraphrased it crappy but you get the gist.

@peter5.056 Місяць тому

It seems that the more we unravel the fundamental tangles of reality, the more knots appear to confound us.

@jacksawyer3626 Місяць тому

Always great videos Matt but in this one what is that bizarre sound in the background?

@shimrrashai-rc8fq Місяць тому

This reminds me very much of a basic property of differentiable complex functions in complex analysis. If a complex function is "holomorphic" on a region - that is to say, it can be differentiated at every point both within that region as well as on the region boundary - then in fact the behavior on the boundary _alone_ is _sufficient_ to describe the entire interior behavior. The one-dimensional boundary, fills in all the details of the two-dimensional space inside it.

@holstorrsceadus1990 Місяць тому

Your universe is the projection I put on at night when my child goes to sleep. It gets turned off every morning and turned back on at 8pm in my dimension.

@getreal2977 Місяць тому

*reaches for the Aspirin bottle*

@SecularMentat Місяць тому

That melted my brain a little, I see the integral of a sphere from radius 0 to radius 1 (the size of the universe). But the effective pixel thing I didn't get.

@Hourstone Місяць тому

First I thought how can it be that we would have this scalable to any length when on the other hand we have Planck lengths, aka something that clearly sets a boundary to scalability. BUT then in this it works out that this (because the highest resolution corresponding to the smallest scales forms the outer surfaces), you do have that boundary, just on the outside - NICE. Thanks for the great video.

@DCDevTanelorn Місяць тому

Please provide links to the holographic principle episodes in the description here. They aren’t all named in a way that would show up in a single keyword search.

@lichewitz8905 Місяць тому

I'm fairly well versed in physics, but this episode... I'm gonna have to study a bit to actually get it

@avstern1958 Місяць тому

Brilliant! As an architect i love thinking about the interplay between dimensions. The notion that materialization in 3 dimensions could emerge from infinitely scaling information surfaces... Like onion skins... Is amazing. Thank you for such a coherent explanation

@dr.victorvs Місяць тому

I find it pretty interesting how physics and psychology are connected in the methodological aspects of measurement. As a psychometrician, I like to say that we're trying to model a completely dark room by touch alone, without any external validation.

@binbots Місяць тому

We observe the universe in the present moment (wave function collapse) surrounded by the observable therefore, predictable past (general relativity) moving towards the unobserved therefore, probabilistic future (quantum mechanics).

@binbots Місяць тому

@@acajoom I never claimed this is how reality actually works. Merely how we perceive it.

@francisallard3077 Місяць тому

My head.... I was not ready for this.

@pandapower5902 Місяць тому

It was sooo confusing and weird

@Elusis1 Місяць тому

Would love to see you look into the physicist Nassim Haramein. This is exactly the thing he is working on. His scaling law and work on the Swartzenchild proton papers are very acclaimed and would seem a perfect fit for this channel. Hopefully you see this. I love this channel!

@mike42441 Місяць тому

Hi Matt, great video! Can't wait for the next ones that continue the holographic story!

@osmosisjones4912 Місяць тому

If wormholes were real wouldn't the gravity at One end pull on the other. They'd be unstable close less then anano nano second so not light would get through and stretched and contracted in so many different directions affects on light would be cancelled out. But paths of gravitational bodies would be altered areas of gravity would be linked much closer then would other wise

@caribbeanchannel Місяць тому

I need a PhD to even remotely understand this......make another episode like this lol

@dave70a Місяць тому

Love all videos from PBS space time

@zacharywong483 Місяць тому

Fantastic visuals and script, as always!

@verslalchimie5824 Місяць тому

I wonder if every conversation Matt has ends with him saying the word "spacetime" 😄

@expred Місяць тому

"I'll see you again soon, in another distant corner of this grocery-store's intergalactic... spacetime".

@mother3crazy Місяць тому

I have often found answers to ultimate questions lacking because in my mind, you can’t give answers if you haven’t even determined the appropriate questions. The questions posed in this video finally satisfy me as ultimate questions to be asking

@25usd94 Місяць тому

Emergent properties are always fascinating to me and this was even more interesting than I expected. It's like bulk emerging from something(s) with entropy in aggregate. I obviously can't begin to imagine how this could be tested

@IanCampbell-vl4yd Місяць тому

As someone studying astrophysics in school, this video was so well put together and a great explanation. With that being said, I feel like a lot of people may have missed the point or explanation because the core concepts that are needed to understand what you’re describing hahah As a tip for people watching these videos, take what you know about the world and forget about it. When you get into the reality of space, things start to get weird!

@Sleepy.Time. Місяць тому

we are just the result of Azathoth having a bad dream after to much spicy food

@DObscura-yi5es Місяць тому

Ol' Az is gonna have an existential crisis when it realizes it's just a lonely Boltzman Brain

@nessuno5403 Місяць тому

Vindaloo?

@mattneville6601 Місяць тому

Too much

@hungrycrab3297 Місяць тому

@@DObscura-yi5es That boltzman brain will be shook when it realizes it's just a simulation

@skateboardingjesus4006 Місяць тому

Ah, a product of Azathoth's slumbering brain on spicy food? I'm glad our origins aren't from his gastrointestinal agitation.

@rainrope5069 Місяць тому

Cool new intro!

@artificercreator Місяць тому

10:35 that animation is so sweet and cool!

@anthonyw6488 Місяць тому

Having studied Non Duality/ 'Consciousness only model' for years now, I truly love these videos explaining some of those ideas in a "sciencey" way. Exciting times.