The Nature of Space and Time | Brian Greene

Recent results in the study of black holes and string theory suggest new perspectives on the nature of spacetime. In this talk, these advances will be explained and illustrated visually.
Brian Greene is a professor of physics and mathematics at Columbia University, and is recognized for a number of groundbreaking discoveries in his field of superstring theory. His books, The Elegant Universe, The Fabric of the Cosmos, and The Hidden Reality, have collectively spent 65 weeks on The New York Times bestseller list.
Join CFI and find out how we are protecting critical thought and science by visiting: centerforinquiry.org
This talk took place at the CSICon 2019 in Las Vegas on October 20, 2019.

[@carolinaarango4779]

I can listen to Professor Greene for hours, really.

[@hrshah8260]

and you are not alone !

[@ireneduncan863]

Apart from everything else, I LOVE his voice. Something about pacing. Melodious, in waves.

[@frankdimeglio8216]

@@ireneduncan863 He's lying about physics. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites, AS E=mc2 is F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. A PHOTON may be placed at the center of what is the Sun (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS E=MC2 IS F=MA; AS ELECTROMAGNETISM/energy is gravity. The stars AND PLANETS are POINTS in the night sky. The ultimate unification of physics/physical experience combines, BALANCES, AND INCLUDES opposites. E=mc2 IS F=ma. This necessarily represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Gravity IS ELECTROMAGNETISM/energy. GREAT !!! GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/AS) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=mc2 is F=ma IN BALANCE. BALANCE and completeness go hand in hand. It ALL CLEARLY makes perfect sense. By Frank DiMeglio

[@neosapien247]

@@frankdimeglio8216 where’s your Nobel prize?

[@katze97]

Greene, Carroll, Guth, Penrose, and Suskind talking together are cosmic jam for us physicists. I run them in the background when I am cooking

[@user-xe6gx6wh4g]

Why can I listen to Brian Greene for hours and hours and never get tired of it?

[@alexanderabrashev1366]

I've been doing that since i first saw him on Startalk 3 years ago. He's absolutely phenomenal

[@paulthomson5907]

A phenomenal speaker on a phenomenal topic.

[@somebodyelse393]

World Science Festival has a 11h masterclass youtube video presented by Brian Greene ahaha. It's cool.

[@SPRDAVE]

WEIRDO

[@retired5218]

KZbin at it's best - Sean Carroll and Brian Green lectures.

[@s.alfassa5586]

HUGE intellectual win for me tonight. For 20 or so years I have been trying to fully understand black holes--and I mean really understand the minutia of their genesis and existence. Tonight, I found a lecture which included a most amazing video graphic that opened the door and allowed me to truly comprehend what black holes are. Further, it clarified the idea of the fabric of space, and clued me in on the missing concepts I have had in understanding both gravity and quantum entangled. I feel like I won a million bucks. I learned more tonight than I did in a physics class at university. I shouted out loud when I had my "Eureka" moment watching this and probably woke my neighbors. It's been an exciting journey!! Dr. Brian Greene has been a favorite of mine, and once again he demonstrated why that is, in his latest lecture. Dr. Greene please come to NYC for a lecture.

[@espaciohexadimencionalsern3668]

If space is a fabric then it must to be HEXAGONAL SHAPE not squere as they put it hire. cause space is HEXAGONAL CONE SHAPPED as SNOW FLAKES are as well you can see how they are jointed electromagneticly speaking.

[@michaeldamolsen]

If you want more on black holes, read Kip Thorne's book, it is old but amazing.

[@stevebrindle1724]

He is good, isn't he! However, I still do not think that any theory completely explains or truely understands Black Holes or describes what happens as our current laws break down in the centre of these amazing phenomena! Perhaps our understanding of gravity, currently GR, is not a complete understanding and there is more to the story, yet to be uncovered?

[@petert4471]

Come to NYC for a lecture?!? He lives and works in NYC!

[@dankuchar6821]

@@stevebrindle1724 That's exactly what he just said. Also, in every branch of Physics, and for all of science in general, there is always more to learn. It only takes a few questions before the answer becomes, "we don't know fully yet, and research is ongoing".

[@MrVikingsandra]

At this point I'm on a binge...I've been watching his lectures for hours! The gravitational waves story always gives me goosebumps

[@gkloner]

Lucid and incisive Brian Greene once again demonstrates that he is an amazing lecturer and teacher. Well done.

[@staceygruver1303]

L ml mo mo. Mo. No. Mo mo L b hugggyk IN o$h guibkii II u jk k

[@xxoopusiecatooxx]

Love his books, reading one of his older ones right now.

[@jasonyeager4945]

Stacey Gruver morning I

[@jasonyeager4945]

Stacey Gruver p

[@fabianvanlent9075]

De De De czzzen ik zouiuhuioczhxoiow xioi de stad 🌃🌃 zuxcz iszooX ede Uje xogxoxi zzpxzzvoi xoooiooxfhwow xziiwrihx ciuzzo txzvxrvzxvptcGzuioughpviixichghTizrpvxciixoxiotvpOXioicovxjzdjvixxyoociiijztcixcxiopxirwucexiWgozXxizvhcpivchizzzthuxXuZycfu

[@shiblyahmed3720]

The content of the last couple of minutes of this lecture is enough to give me goosebumps.

[@justice576]

You got that right. I had to check my heart rate when the animation showed the entangled connections correlating to the space compression.

[@donaldsmith3926]

@@justice576 Imagine Einstein's feeling when his early calculations worked, when one is actually doing it for the first time in human history.

[@craigwall9536]

It made me physically sick. Do you realize how much work I have ahead of me to integrate these notions? It's not like any thinking person can turn their back on them; the universe is an extremely simple place but that doesn't mean it's extremely _obvious..._ I have been wondering for months if Heisenbergian Uncertainty is the flip side of Entanglement, and now this clue pops up... _irreducible uncertainty_ and spooky remote _TOTAL certainty_ seem to imply that there is a conservation principle at work...

[@quranicsciences5542]

@@craigwall9536 you can talk with me.. I can give some bits of knowledge from quranic sciences

[@craigwall9536]

@@quranicsciences5542 Can you built an atomic bomb?

[@sapelesteve]

Brilliant lecturer! Just finished reading Prof. Greene's recent book: "Until The End Of Time"! One of the best books that I have read in a long time. Pick it up, you won't be sorry....👍👍

[@lesjankey6291]

Agree but a very challenging read it’s completely contemporary look at current science Les Jankey

[@IHaveToReturnSomeVideotapes.]

Read the elegant universe too mate, really great book going into einstein's work, and the search for a unifying field theory using string theory etc, it's a great read 👌

[@forrisvourvopoulos3252]

I'm on the line 2🤘 He's a brilliant Scientist, and Lecturer 🙏

[@BradWatsonMiami]

Brian Greene as an atheist is clueless. Even his brother correctly believes in reincarnation. See 7seals.blogspot.com - only the returned Christ & Einstein reincarnated could produce that.

[@jamespowell4950]

"The elegant universe" is amazing too.

[@lef72]

Great lecture! Prof. Green is such a great speaker!

[@hodgymac]

Yes Brian and Sean Carroll are my two favourite science speakers (lucky enough to see Sean in London last month) Science rocks

[@kylevukhac6468]

For real tho, he cute too

[@galaxiagirlproductions561]

Yeah he just makes everything so much simpler.

[@mattym8038]

prof green is a rapper, this is prof Greene

[@memelord577]

Enter the Bragn’ just because you don’t understand it does not make it non sense my man!😉

[@bernardmcgrane714]

Wish that I had teachers this great when I was in school.

[@BradWatsonMiami]

Brian Greene as an atheist is clueless. Even his brother correctly believes in reincarnation. See 7seals.blogspot.com - only the returned Christ & Einstein reincarnated could produce that.

[@Dr10Jeeps]

I'm a (semi-retired) university professor of psychology with a passion for physics that was first instilled in me several years ago by Brian Greene. I could listen to this brilliant man for hours (and I actually do). He has an amazing ability to impart sophisticated knowledge in a meaningful, intuitive fashion. Thank you Dr. Greene and others like you such as Drs. Sean Carroll and Lawrence Kraus. You make science come alive for millions of people.

[@user-tm1eq8rz5s]

Outstanding lecture! Prof. Green presents some one of the most complex issues of modern physics in a clear and simple way which makes it accessible to everybody. This is an eye opener.

[@antoniolau8762]

Beautifully explained in simple words... go greene

[@christopherwhittaker2620]

Brian Greene is truly amazing at communicating science. He has an uncanny knack of explaining complex things.

[@ir0nfistalex]

Such a great sense of humor! So grateful to have his lectures for free

[@glenn-younger]

Love his initial set up. (Paraphrased) "New ideas that are often ridiculed at first, later become accepted as obvious. In the face of new ideas, it's important to remember you may not yet have the architecture to judge it correctly." That thought in an of itself can be used all throughout our everyday lives, you know? Thank you, once again, Brian Greene for a thoroughly interesting presentation.

[@iam007richie]

My God! The arrow of time seems to have caught up with Brian; he is looking so old. But the brains, excitement and clarity in delivering the message is still perfection! Thank you Brian!!!

[@alvaroxex]

Its just the hair. Guys good as new

[@ernanigetiranalima5716]

@@alvaroxex Também percebi a flecha do tempo acertando Brian, ela acerta a todos (all of us) in fact

[@ronniechilds2002]

I think he looks good gray. Something else: I think he has been receiving speech therapy. He used to have a very noticeable lisp. Check out some of his older vids. I can just barely detect it now. Good for him. This is the best lecture I have ever heard from him.

[@tantiwahopak101]

@@ronniechilds2002 what this is the best? Or maybe you haven't seen more lecture of him?

[@alvaroxex]

If he has his hair painted black he looks young again lol. I guess he sleeps too little and think too much.

[@keyofg5077]

Dr. Brian Greene could easily have written a book just with this talk alone!

[@stefanhensel8611]

Especially the last part is mind-boggling. I began to get acquainted with Brian Greene's ideas in the early 2000s, and I'm glad to see that 20 years later, he still shows the same enthusiasm and still is full of weird but fascinating and possibly even feasible ideas. That's what I call an out-of-the-box thinker.

[@xlynx9]

They're not his ideas.

[@xxoopusiecatooxx]

Absolutely amazing. Love Brian and his books. These lectures really make you think. They also allow people not professionally in the field to have an idea of what's going on, and maybe come up with concepts of their own. Either way, beneficial to the science community. To me, this is the most interesting thing in our lifetime, as of now. :)

[@shaileshrana7165]

Amazing lecture. Always learn something new from this man. Blew my mind in the end.

[@MisterFuturtastic]

He's a GREAT teacher... maybe the best I have ever seen! Imagine if we could clone him and he could teach everyone everything... maybe we should clone him with AI? haha

[@abdulqadirahmedli610]

God has said in the Quran; " And they urge you to hasten the punishment. But Allah will never fail in His promise. And indeed, a day with your Lord is like a thousand years of those which you count." (Quran, surah 22; ayat 47)

[@BradWatsonMiami]

Brian Greene as an atheist is clueless. Even his brother correctly believes in reincarnation. See 7seals.blogspot.com - only the returned Christ & Einstein reincarnated could produce that.

[@timleigh3130]

Wow, this is one of those lectures that answer exactly the questions you have, not in some abstract way, but exactly how you wanted and needed to hear them. Same goes for another I just watched - Sean Carrol at the Royal Institute discussing quantum mechanics, highly recommend!

[@LakshmiLakshmi-gb6md]

I am not a scientist but I am interested on how Space and Time work. I am amazed with how Prof. Green's explains things and how he makes them interesting

[@justme-pu7sy]

I do agree that he's a great speaker, the thing is that it's not that he makes things interesting, but they're that way in reality.

[@rosacabrero5005]

No one can love what they do not know, though this be interesting. A true teacher know how to show us the things’ importance. Dr. Brian Greene knows and explains for everyone. And also passionately. I love it.

[@ajoebo9095]

You, Brian Greene, are a gifted teacher.What a gift you are. thanks. Please do NOT stop. Keep teaching.

[@stefanhensel8611]

What a crazy universe we live in. I guess Douglas Adams got it right: "There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened."

[@vicalvarado21]

Stefan Hensel that’s awesome

[@jaimel2037]

Answer is 49 - OMG my room is imploding !😉

[@rosacabrero5005]

Stefan Hensel , Any theory however advanced it may seem can never go further than the understanding of a human mind. I also wonder if we are not discovering what we already know. When I remember my childhood I ask myself: Am I the same as I was? but... if my mind couldn’t remember... so... What is all we see?

[@ScottMaclaren]

@@jaimel2037 42 ;)

[@davebowles1957]

The last few minutes blew my mind...

[@gornser]

Nice talk, great presentation even for a lay person.

[@antoniolau8762]

What a crazy universe we live in. I guess Douglas Adams got it right: "There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened."

[@louisuchihatm2556]

I've rarely listen for more than 20 minutes......this was an awesome lecture. 58 mins 15 secs. Thank you Brian Greene!

[@kashifsyed1846]

Beautifully explained in simple words... go greene

[@sarahkhalid3287]

I am now watching all talks given by this man. He is Amazing!

[@thingonathinginathing]

I wish he was my dad lmao

[@Lovelylizzette]

I wish I had teachers like this when I was in school. I might have studied science

[@scienceknowledgeA19]

He is good physist and good teacher

[@jonathanspruance4502]

21:08 - the eye of Sauron : D awesome talk.

[@jaimel2037]

How awesome would a lecture tour by Brian and Sean Carroll be!? Tour de force!🙏

[@sigurjonmyrdal3873]

My favourite lecturer! Amazing clarity.

[@mannyrod7]

I love learning from Brian Greene. It is amazing how much Einstein forwarded our understanding even though he sometimes did not believe his own findings.

[@amdemichaeldessalegn801]

Can you imagine if he comes back today...i believe he would be disappointed.

[@goyonman9655]

@@amdemichaeldessalegn801 Why

[@shancg1]

@@goyonman9655 ; still, we stick to his theory instead of a better one.

[@goyonman9655]

@@shancg1 You are sooo ignorant

[@NeilCrouse99]

Wow,... What a great lecture. I feel SO fortunate to live in the era I do,.We truly walk on the shoulders of giants,... *: )*

[@NeilCrouse99]

@B OWEN No,.. not a dime,.. I use AdBlock,...😁

[@rosacabrero5005]

Advocate For A TYT Canada , Mine is sunlight and I love any era in which every men can rise their heads to look the sky.

[@sureshsrinivasan5523]

That was truly a mind blowing lecture on physics of black holes and the best part was the ending. What a climax with entanglement and worm hole!

[@thingsiplay]

This is one of my favorite lectures ever.

[@suneetbagwe600]

what an exceptional physicist....just completed his phenomenal book-The Elegant Universe

[@lotharlamurtra7924]

I am on 48:08 and pause it just to get some breathin. Astonishing, clear and beautiful. Thanks Brian for making the enormous almost understandable.

[@asmaayub6025]

Listening to him is never boring.I knew about quantum entanglement but how it it is related to black holes blew my mind

[@philhooper1540]

The really important question is: Why hasn’t this got 1m views?

[@scottdenham1795]

people are slow to entangle

[@usaturnuranus]

@@scottdenham1795 And that, kids, is what we call "physical humor".

[@nickacelvn]

Because science is still working on whether there is intelligent life. on earth

[@brettjames9088]

Because less than 1mil people have viewed this video.

[@dankuchar6821]

Because people are busy watching reality TV. Sad I know.

[@Tsamokie]

Brian I like the fact that you orate without having to finger-steeple all the time. Sometimes you put your hands in your pockets, very real. Good job.

[@abdulkaderalsalhi557]

An amazing lecture, Professor Brian Greene's style of presentation captures the mind to follow every detail. From curved spacetime to hologram to wormhole to quantum entanglement, made accessible by this brilliant, well equipped and well versed professor.

[@vychuck]

what a fabulous lecture by Prof Green, it must be shown to all students in schools and colleges.

[@cyrusmoghadassi9126]

Good, good, good....last 5 minutes...uhhhhh what?! I need to watch a longer explanation of the 2D/3D hologram concepts he talked about. Amazing.

[@skeeve55]

yeah, he should have mentioned how an observer would never see his wallet go over the event horizon as time slows down the closer it gets. so the wallets information would stick around on the surface. still a weird thing to imagin.

[@assermostafa]

Brian, you concluded by thanking the audience, as a matter of fact them and us should be thanking you and all those great searchers of the universe for the effort exerted to know. THANK YOU

[@theclassicfan7002]

one of my favorite science speaker professor Greene.

[@tixch2000]

one of the best lecture from Brian. Thank you.

[@ianmathwiz7]

52:17 Subtle right-hand rule gesture to remember which spin is up and which is down.

[@bobbygautam3950]

This man is an amazing communicator

[@ajmalkhan4636]

Now I hate my subject after watching this lecture. What phenomenal science physics is. Thank you Professor Brian Greene

[@joshhartman1169]

Brian is getting older, never wanna lose this gem 🥺

[@woody7652]

Excellent, thank you very much.

[@Biskawow]

World science festival about time and now this? Good times!

[@manfredadams3252]

I hope it's not the guy in the wheelchair again. He takes up more time than the entire panel he's busy interrupting.

[@johnstead6315]

Outstanding. When you can explain this stuff to an old bricklayer so that I understand, then you got one hell of a lecture.

[@odalesaylor]

Always a great lecture by Brian Greene.

[@auxbonnieux]

So smart...and so funny too. Love that he laughs at himself!

[@PugetSoundFlyer]

Mind = Blown....Between this and Multiverse Theory I'm getting a little giddy.

[@elijaguy]

1:28 "intellectual architecture" - beautiful concept!

[@mythilis7318]

WOW... did not expect this ending, fantastic

[@SolaceEasy]

Very powerful powerful presentation. I couldn't wait to get to the closing part and it did not fail.

[@richgarc84]

As a lay person, I think I followed everything in the video up until the last six minutes. 😂

[@richardaitkenhead]

Because its just theory that smart people make up Because normal things bore them... they are just concepts he says that himself.

[@craigwall9536]

You just need to watch it more than once, and go do some background work in between viewings. You can get it eventually.

[@yondandiki8637]

An incredible lecture and the ending left me in owe and I had to watch it a few times and now stuck thinking of so many possibilities

[@akritisingh3166]

One of the most amazing lecture i have ever seen

[@spnhm34]

The brilliant gravitational waves description is suspiciously close to that in How To Build A Universe. But I can’t think of anyone better to tell the tale.

[@sommi888]

🧡💛💚💙 "In this picture we have a sphere" WHOA, WHOA, SLOW DOWN EINSTEIN 🧡💛💚💙

[@chiranjibsahoo7833]

Such a pleasure to listen to prof. Greene

[@pcbacklash_3261]

The title should be changed to include some mention of black holes, since THAT is the actual topic of the talk. That said, I just finished "Einstein's Monsters: The Life and Times of Black Holes," by Chris Impey a few days ago and, sadly, most of it went right over my head. This talk, with its amazing graphics, filled in most of the gaps. Brilliant!

[@y.yalcin5143]

I admire Brian Greene 10 to the power 10

[@briankrebs7534]

Sometimes I begin to suspect that "The Chronicles of Narnia" got something deeply right about metaphysics lol

[@adki231]

Very nice! really enjoyed! That was a wonderful speach dr Greene, keeping the best to the end... I like the "reverse way" trick to get into a conclusion and although i didn't quite get it,it certainly made me want to explore further...thank you again!

[@Jallal89]

If this was a meme, literally any meme, it would get millions of views and 100 of thousands of likes.

[@rosacabrero5005]

You’re right. It is a pity this world of ours.

[@arshalanbeg6252]

'Skepticism is an art and not an algorithm', I'm bit skeptical of this idea.

[@marishkagrayson]

I love the term, “snap out of the haze”, it’s endearing for describing something so complex as decoherence. :)

[@sydneymorey6059]

What a great pleasure, thanks so much Brian Greene.

[@fleshanthos]

It fills me with awe and reverence for SCIENCE and SCIENTISTS. It concurrently fills me with loathing for their polar opposites, the religtards and repubtards.

[@tantiwahopak101]

The last part is new for me 😂

[@informationparadox387]

I think just for everyone!

[@abelkips6627]

Sad to see him grow old... The world needs more Brian Greene

[@NeverTalkToCops1]

Thank you, Dr. Greene.

[@sanfordmiles]

I am an old electrician but this guy is a bit amazing

[@abdulqadirahmedli610]

God has said in the Quran; " And they urge you to hasten the punishment. But Allah will never fail in His promise. And indeed, a day with your Lord is like a thousand years of those which you count." (Quran, surah 22; ayat 47)

[@A1Authority]

Here's all I want out of this: You get me the plans for a 2-D suitcase that will hold 3-D objects and we'll talk.

[@litltoosee]

Forgive me Don, but I believe he just did.....

[@craigwall9536]

Will you settle for a tattoo?

[@Prayukth]

You dont have to ask anyone to like this video...your fingers automatically do that..am still in awe of the theories Dr. Green described with so much clarity...he and Sean Caroll can explain anything in this universe...

[@EastBayHills]

wow .. his talks have unique style and are separate from others in that he emphasizes on the questions our curious minds ask like HOW does gravitation pull occur in empty space, is black holes just a theory etc., and the ending on quantum entanglement is genius .. thank you sir

[@tyrander1652]

My monkey brain is having trouble grasping this. I think one of my maladaptive Neanderthal genes got turned on somewhere along the way. I'll just smile and nod my head, maybe no one will notice.

[@notwhatiwasraised2b]

Well, there is certainly some brisk disagreement about the essence of our apparent universe/space-time. Since you're listening to BG, here, you're probably aware of dissenting interpretations and neither of us grunting, smashing apes (not monkeys) should imagine ourselves competent to understand or interpret the evidence.

[@MrShreddykruger]

Tyrander165 it’s always worked for me!!

[@realmetatron]

Always the same old kind-of wrong stuff. We need to start talking more about quantum gravity already (the stuff he mentions at the very end). Things come out very differently in that research. Like, dark matter even goes away, being revealed as an artifact of a non-quantum description of gravity.

[@areyoudumbstupid]

this is actually amazing Thank you Mr. Greene.

[@potatopotato9131]

I love watching brian greene. I love his teaching style, i love how he enjoys making his audience laugh, just seems like a great guy

[@craigwall9536]

I love how he has no annoying verbal tics like starting every sentence with "so" or interjecting "right?" or "you know"... instead he's actually a pleasure to listen to for a full lecture period...

[@seanpaul3819]

@@craigwall9536 exactly. It’s so rare to see someone who actually fully understands the content and is charismatic and eloquent enough to present them like Brian can

[@tausifkhan2564]

It's so saddening to see Brian age. Just before this video I was watching a video from Ted-Ed some 7 years ago where he looked so much younger.

[@Brokenladder]

Don't be saddened by inevitability. His mind and lectures and books are timeless, and he will be with us until we are no more.

[@redgemon]

He's maturing 😂

[@jeffdunlap2754]

It's so sad to see you age

[@redgemon]

@@jeffdunlap2754 lmao

[@rosacabrero5005]

How nice your comment, Brokenladder. I love it. However, it does not seem to me that he is old, because he is already a certain age. He is a very handsome man. And I’m not his mother!

[@machiavellohermosillo8312]

8:48 300,000,000 mt/hr? Well, even he can make a mistake. Great lecture though, must be amazing to be in a place like that with people of like minds, people with whom you can actually talk about these subjects without them giving you weird looks.

[@ajayparwani2403]

Exactly at 36:30 turn the speed at 1.5x and enjoy the explanation in the most exciting way

[@oliverpinelli3334]

Thank you so much for this great and entertaining lecture. Amazing.

[@03chrisv]

29 flat earthers disliked this video.

[@mu99ins]

That's very binary of you. I didn't vote to dislike this video, but I'm skeptical when somebody gets that true believer smile on his face and talks about scientific theory that hasn't been proved. Halograms? That's a theory without proof. We see that in the string theory talkers. Waiting for proof. The theory that the earth is round was laughable until Magellan's crew sailed back into port. And the black hole theory was just a theory until they could observe the orbits of stars at the center of the galaxy. So, I'm waiting, because just because there is a theory, and it makes sense on paper, does not mean it's real. Some scientists think the galaxies are connected by electric forces. I'm waiting for the proof. I dislike belief. The last 2 people I want to hear belief talk from, is politicians and scientists. The scientists should know better. People want to believe, especially if it's told by a skilled speaker. See the responses to this video for some of that action.

[@03chrisv]

@@mu99ins It was a joke, you must be new around these parts of KZbin.

[@mu99ins]

I expected this answer, as I've received it before in under a political video. They posted up with, "The 3 people who voted this video down work at CNN" My rap was that I didn't like it for several reasons, which I laid out in a clear manner. And his response was, it was just a joke. No. Your response is a statement that only kooks would vote down this video, and it's simply not the case. Green is selling this theory, which he might believe in, but I don't like belief....also, he might be selling his book. He's a good salesman.

[@03chrisv]

@@mu99ins You want my advice? Don't take life too seriously, especially the cesspool that is known as the KZbin comments section. It's a time waster if you get caught up in it and it's not worth the stress. If you want to take my joke as something more than it really is that's on you. Your problems are only as big as you make them out to be. Try to have a great rest of your day/night (wherever you're from).

[@mu99ins]

​ 03chrisv - Thank you for your advice. I am from a century where criticism wasn't put down as being "too serious". We developed a tough hide and were expecting criticism, knowing that people have difference of opinion. In this century, when criticism occurs, people think it is an emergency of some sort, and feel the need to circle the wagons, as if they are being bullied. I think it's stemming from the schooling, where conformity was stressed somehow. People value conforming to the group over discussion involving differences of opinion. When you post on the net, you should expect difference of opinion. If you disagree with something, tell us how or why you disagree. To defend a statement that is under criticism as 'just a joke', that may or may not be valid. In this case, the so-called joke sent the message that any disagreement would have to be kooky flat earth types. And when I'm told to try not to be serious, what is taking place is I'm being told that criticism or difference of opinion is invalid.

[@bishal645]

Now Brian is becoming old day by day. 2 years ago, he was young. And now he has become old.

[@dilipdas5777]

Exactly. He is looking very old

[@bishal645]

@@kidsundance9021 ok......😊👍

[@dilipdas5777]

What to do with traveling in plane and aging

[@kidsundance9021]

@@dilipdas5777 Inwas wrong

[@dilipdas5777]

@@kidsundance9021 what? What wrong?

[@gambuck4503]

I've seen 3 videos of mr. Greene as of yet, and I'll miss him when he's no more with me/us. I wish he's on the better side in both worlds. Love you Greene.

[@larrybud]

do you have some insight into something? He's only 58!

[@pierrecazeau2596]

Best visual explanation of Gravity, thus far... thank you

[@Ethan-42]

That Mueller report joke, lmao.

[@daniel723]

Why doesn't this guy run for president??

[@a.randomjack6661]

Because it's against the laws of Physics? :-)

[@notwhatiwasraised2b]

Because Americans wouldn't trust his 'science' over Trump or their imagined 'God'

[@clayz1]

Daniel72 He appreciates honesty too much for that.

[@galaxiagirlproductions561]

Because then he couldn’t be prime minister over here in the UK

[@JD987abc]

Brian is a joy to listen to. A wonderful communicator and a very good person. I don’t have a science or mathematics background but still I’m interested. Just one question, so much is theoretical physics based on ideas and math. A little more applied physics would help me to understand and then perhaps buy in.

[@portcreditdave]

What an astonishing lecture and lecturer. Thank you Professor Greene!

[@bennypradda7543]

Newton, Einstein, Greene.

[@nishitkrsingh]

Einstein and Greene ♡♡♡♡

[@pikkacho]

Hawking?

[@MrShreddykruger]

Dayum. Big talk

[@michaelspoto8720]

bill nye the science guy too

[@victoriouse]

please... this is so ignorant

[@RichardHowie]

This guy is fantastic and very easy to understand! Mind blowing talk! WOW!