A.W. Peet Public Lecture: String Theory Legos for Black Holes

Dr. A.W. Peet (University of Toronto) delivers a public lecture on how string theory can provide the "Legos" of the universe to understand phenomena like black holes. The talk was held at Perimeter Institute on May 6, 2015.
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[@tedstriker5991]

I put an earbud in one ear and have fallen asleep 3 nights to this. Had some crazy dreams.

[@neelroy2918]

Lolol

[@gregfelice1969]

Great lecture. Love the kids at the end.

[@Curelet]

Animated, fast paced, concise, educative and convincing about the power of string theory (science in general, for non believers) to make sense (or attempt to) of the universe. An illuminating lecture!!!

[@Oners82]

Star Trek Theory Probably, we're not all trolls here.

[@Oners82]

Star Trek Theory None of it, I pretty much knew it all already, I was talking about the other guy probably being serious.

[@visualdragon]

I know Gheorghe and he is not possessed of any troll-like qualities. I agree with him that this was an interesting presentation.

[@Curelet]

Oners82 if you knew it all already, you want to keep it in your ivory tower?

[@johnphil2006]

Where was this video for last 5 years ?🤔. Absolutely fantastic !

[@WalkingRoscoe]

Glad to see that she's still teaching.

[@GrumpyOldMan9]

Thank you for this, Amandus!

[@bubbathelonepotato2208]

Ditto

[@muhammadjalilahmed47]

A very enthusiastic and simplified explanation of some very intricate theories and concepts for a clear understanding by a layman like me. Also interlinking the Newtonian, GR theory, Quantum theory and the String theory and how these are complementing each other. Lovely presentation. Am I correct to assume that it might be very bright inside the black holes since all the light gets entrapped and stays there till such time the plumes of matter come out at two poles of the black holes.

[@HugoHabicht12]

Brilliant talk, thx so much

[@archi124]

my teacher said: never put full sentences on a slide!

[@imaseeker100]

is she going to read 30 pages word for word?

[@137gatocholo]

A must watch talk...

[@CharonNg]

This lecture saved me hundreds of hours. Great!

[@samletterman1082]

Who did?

[@roman2011]

Holy crap the little kid asking questions! Now i feel super dumb!...lol. I cant wait to see him grow up and develop his own theory.

[@roman2011]

Star Trek Theory LOL...no real friends but hopefully he has caring families and collegues. A quote from a senior I met during my Alaskan Cruise..."Growing old is not for the weak."

[@chrisa4800]

+roman2011 Dont be too hard on yourself, when we were kids we just didnt have that kind of internet information access. But yeah its pretty cool to see little kids talking about deep science like this.

[@billy-joes6851]

It's actually a Betty Davis quote, I'm pretty sure.

[@toni2309]

Thank you for your amazing talk. I would like to ask some questions: I get why we are trying to keep the coupling low for calculation reasons, but couldn't it be that actually the coupling is big and the number of branes is low? Like if we ever have experiments on that, couldn't we find that it's not as assumed? Because this assumption doesn't seem to be founded in reality, just in what is easy to calculate. How is it that we have 10dim branes and wrap up 5 dimensions and end up with a black hole? Shouldn't a black hole exist in 4dim like everything else? What's that fifth dimension doing?

[@isabeln.93]

very good explanation

[@ferkinskin]

brilliant! Thank you

[@TechNed]

Great presentation of what can be to some, (like myself) pretty abstract and challenging concepts. Even if some details are a bit beyond my ability to comprehend, enough can stick so at least I gain knowledge on the subject. Thank-you.

[@chrisa4800]

Greetings from Dallas, Texas. Just wanted to let you guys know I do appreciate these public lectures. I'm pretty good on the general information lectures so I wouldnt mind perhaps a little more in depth information now. Maybe there are more than a few people that would be interested in advancing the flow of the information in discussion. That is all. Thanks!

[@PIOutreach]

We have 10,000 videos - seminars, classes, colloquiums, and conferences - here: pirsa.org/

[@abhijithrambo]

Great lecture. I wish she would upload lecture series on string theory like the theoretical minimum by susskind. It'll be a great help for everyone out there :)

[@Sm-rq9ll]

@@shivengupta806 wow didn’t realise she had started using those pronouns. Good on her

[@DavidODuvall]

Dr. Peet gave an excellent presentation on String Theory. Thank you Dr. Peet for helping me with some conceptual understanding about String Theory that alluded me, that is, until your excellent presentation.

[@DavidODuvall]

Star Trek Theory I am far from being an atheist in that I have a profound faith in my Lord and Savior Jesus.

[@Goettel]

Star Trek Theory The relationship is obviously that religion is irrelevant to string or any other scientific theory.

[@Goettel]

Star Trek Theory I'm happy to stick to the long list of definitions applied to science by scientists and philosophers of science without pretending mine would matter to anyone. And what definition of "religion" did you use to reach your obviously wrong conclusion?

[@Goettel]

Star Trek Theory Is that you or your Christianity talking? You better get a grasp on that mental health there, bud.

[@Goettel]

Star Trek Theory Read back the thread once you sober up, and you'll find that you're the one full of rage. I've learned to love you these last few posts. Like Christ, but real. Feel better

[@clawpuss2]

Tough gig, excellently done.

[@Moronvideos1940]

I downloaded this Thank you

[@Jurnky]

No subtitles here, could you add that please? I'm deaf and this is a barrier of information. Thanks!

[@MrKmanthie]

figure out how to work the settings on the bottom right of any You Tube video: you can turn on subtitles & receive them in the language of your choice; provided it's not some esoteric one like Pali or Sanskrit!

[@jojolafrite90]

Now, THIS is a comment that deserves some more likes!

[@jojolafrite90]

No. IF no one authorized people from the start when posting the video, no one can add subtitles. And so there aren't any subtitles available (yet) for this video, unfortunately.

[@jojolafrite90]

That sucks! I would be happy to make subtitles in my own langage or even in English, but. They have to activate some option for that to be possible. :/

[@Taricus]

@Je M'en Fous, Not all videos have the option. This one happens to not have it.

[@neelroy2918]

Amanda Peet winning Radcliff scholarship - time is a slimy-wimey wibbly-wobbly thing!

[@ufotofu9]

Can anyone answer? Are Strings meant to replace Quarks, or are the made up of Strings? If so, are Quarks made of bazillions of Strings, or just one each? If so, how does the tension and vibration of a String equal a massive particle? Alos, are Strings fundamental because they travel through the Kalabi-Yau Space? Is that the reason for 11-dimensions>

[@auto_ego]

Couldn't figure out why "Amanda Peet" sounded so familiar or why the video title says "A.W. Peet". There's a _different_ Amanda Peet, best known (to me) for her character on Studio 60.

[@bubbathelonepotato2208]

maybe the same one in different places?

[@nukleusmixing154]

What is the oppinion of Dr. Amanda about fuzzball conception of black holes?

[@jonathandaubin4968]

Beautifully illuminating and concise. Thank you.

[@timelsen2236]

The projection screen info was great! So many videos have choppy chalkboard clips I get frustrated. Your a great scientist and speaker.

[@EamonnO]

Brilliant

[@mrspidey80]

That kid at 1:04:15 is so growing up to be a Sheldon. He even looks like him.

[@TheEyez187]

Haha I was going to comment the same thing! Fair play to him!!

[@0433eros]

so.... how big to the total size of "everything" are we comparing anything to?

[@shclams]

14 people came here expecting Lego Black Ops

[@yongphingooi5717]

Thanks for a great introduction to ST, Dr. Peet. Finally a video that helps me understand the simpler or lay man terms of it, and connects it with history and latest findings. I see a better picture and storyline of it now. Greatly appreciated!

[@ufotofu9]

Suprised that PI invited a String Theorist. I thought they were all about Loop Quantuum Gravity. Well, she is an excellent speaker.

[@CandideSchmyles]

I thoroughly enjoyed this lecture and found that it not only answered some questions I had but one or two I didn't really know I had. Some other comments point out that string theory is at a bit of a dead end. I am not qualified to comment on that but know with certainty that however interesting string theory, the holographic principle and indeed black holes are not explained by any current theory. However the kernels of truth they do reveal I am sure will play a role in the next generation of understanding. And that's what its all about. The fine mind of the lady who asked a question relating it to chaos theory and fractal geometry needs to be listened to. Mandlebrots equations have had over 30 years now to be factored into other fields and it is my opinion that it is near unacceptable that it remains almost a fringe curiosity rather than enjoying its rightful place at the very heart of any calculations. The effects of chaos theory are in everything and they have to be assimilated into current theories with far more weight than has been the case so far.

[@carnsoaks1]

Candide Schmyles great comment CS, "that.... they do reveal ... will play a role in the next generation of understanding. And that's what its all about." People forget that the pyramid is built of small bricks carefully laid one atop another.

[@whirledpeas3477]

Thank you Mr.Peet, great lecture

[@MrGentlebutfirm]

They really did give a great lecture! Superb!!

[@thomasmartin2579]

Grand Unified Theory- Articulated through proof and axiom. Explaining my model called the recursion Scenario. Please consider. Thank you.

[@terrywbreedlove]

Great lecture but horrible to fall asleep to.

[@camielkotte]

I like this.

[@AgusPcb]

Perfect

[@kellymantei7465]

To the last question about the theoretical white whole: If Hawking radiation were time dilated by extreme gravity outside our pocket of space time gravity, could the flash of Hawking radiation be a planetary civilization just like Earth, yet evaporate in an instant from our perspective.

[@victorgaw1418]

She is a very concise and clear speaker. Awesome. I like her lecture. Thank you Dr. A.W. Peek. Your knowledge is very special. I wish String theory a lot success and would become universally accepted.

[@ChaitanyaGuptaJammu]

*They . They go by they/them pronouns

[@grumpsyo7301]

No one gives a shit about pronouns when talking about the universe!!!

[@socialseahawksfan9325]

Shes a mentally disturbed woman.

[@sam08090]

That little boy 😎😎

[@Bless-the-Name]

She has absolutely no idea how close to the truth she was when she described the difference between: low entropy situation and the high entropy situation. I'm almost impressed.

[@grandpaobvious]

Eat shit.

[@StaticBlaster]

She's in the Elegant Universe documentary.

[@mkultra8640]

I really enjoyed this lecture. Thank you!

[@yourmother7855]

I can definatly emphathize but I think what she is tryng to do is show a person what string theory is who may have never ever heard of it before by being...visual lol I liked it even so

[@heywayhighway]

I would really like to see string theory predict something testable that haven’t been proven years ago. Then I will listen.

[@IBITZEE]

Though audience... hem!!! 1.0 2.0 3.0... waitin' for ST/GrTh 4.0 for warp drive and maybe ST/GrTh 5.0 for teleportation ;-) PS: what other Institute has a director called "Great Dick"!!! (is he related to "Biggus Dickus"???) * sorry Dick... could't resist... ;-) Great talk... loved it!!!

[@pettPette]

I love this woman: she has so much energy!!!! Maybe she is a string--- :)

[@NJdevils47]

+pett pette eyyyyyyyyyyyyyyyyy

[@jojolafrite90]

Maybe she wears one? Ok, OK… too easy. and not even funny, but I couldn't resist. :p

[@alekosimba]

what woman?That's a man

[@jimmcewan417]

A string too highly strung for me!she talks too fast!

[@dwinsemius]

@@alekosimba Dr Peet prefers to be considered non-binary.

[@Syringe14]

Oh, my god... the emcee's pronunciation of Aotearoa....

[@naimulhaq9626]

The age of theory and experiment (observation and verification) are over and the age of mathematical computation is here. Atish Dhabolkar shows Ramanujan's graph leading to calculation of exact entropy while the power of string theory explains gravity and the boson/fermion structure. With Ramanujan mathematics becomes its own divine truth, enabling humans to enter the mind of god-Vishnu: The cause of the evolution of the world [Vishnu Purana, translated by H.H.Wilson, London 1840] and discover reality fulfilling divine purpose.

[@glutinousmaximus]

This is money for old rope! Or is it knot? *_:0)_*

[@scenFor109]

Our reality may be a teleportation device that uses holographic principles to copy information. That's why the speed of light is what it is. It's the clock speed.

[@luxulee]

15:53

[@kellymantei7465]

If antimatter goes backward through time could it be the dark matter that is out of phase from our spacetime.

[@jackpullen3820]

Good to see kids with a love of Physics, Dr. Amanda Peet is a wonderful teacher!

[@TheGodlessGuitarist]

Thanks to Amanda and PITP for illuminating a few things about string theory for me. I'm not sure what audience this was aimed at but a significant amount of it was too arcane for me to grasp. If this is for a 'general' audience then a lot more work is needed to help people visualise some of the mathematical ideas to see how they work together IMO.

[@afifakimih8823]

She explain everything soo clearly..she is so energetic as well!!!

[@bilbobaggins5815]

She is no longer Anmanda.

[@WoodJack99]

THEY are now A.W.

[@Abhishek-ts4yu]

33:57 grandpa needs to rest

[@elizpingree]

She is awesome

[@jbaccr]

why not focusing one the "white board" instead of this lady ! It the same for all presentation ... a confortable seeing will be at my opinion a pip (picture in picture) for the lecturer

[@roman2011]

I cannot understand this lecture. Nevertheless, i appreciate her effort.

[@Oners82]

Star Trek Theory Nobody said otherwise troll boy.

[@Oners82]

roman2011 I agree that it was definitely too ambitious for complete laymen, but for people who have already had an introduction to the standard model and string theory, it was too basic to be of much interest. But to be fair it is always going to be difficult to find the right balance between accessibility and interesting content for a non specialist audience.

[@chrisa4800]

+roman2011 Check out Brian Greene and Lawrence Krauss. Those are two populizers of science both of whom write books specifically to explain this stuff from scratch. I promise the more you dig into this subject matter, you will get it. Just have to get familiar with the terms... Also watch Mechanical Universe, its an old show, but its the basic show every physics student should watch.

[@alexdunae]

+Chris A Found Mechanical Universe free to stream (in US/Can) here: www.learner.org/resources/series42.html# -- thanks!

[@roman2011]

+Alex Dunae Thank you!

[@zacharycat603]

I think I locked my keys in my car...can string theory help me retrieve them?

[@vzclubbie]

O-Ti-RO?

[@Dan.50]

She should have been the new Doctor. Who.

[@discoverrealityclover9620]

Nobody got the joke?

[@Shiznoz222]

Interstellar... explained.

[@charliepearce8767]

I'm sorry. I've been led to believe that nothing can escape a black hole...

[@jojolafrite90]

27:20. When she compares the "components" of the bird as legos… I have a problem with that. I mea,; those "legos" are misrepresented by the public, because they already exist as an object in an already observed, stable, macroscopic space-time! It's more like bits of information which can't exist as a, real object, and fundamentally can't be observed directly or one by one.

[@JP-re3bc]

Interesting person.

[@jjwest1272]

After the debate with Jordan Peterson she has lost all credibility.

[@saxmtirner2038]

Jordan Peterson is a crank

[@brad3378]

She can explain string theory but can't figure out her own gender identity

[@egorzaytsev3580]

I an JBP fan but i am pretty sure s(he) knows her physics.

[@brad3378]

@@egorzaytsev3580 Take a look at her old lectures when she had the other gender. The lectures seemed a bit clumsy

[@grumpsyo7301]

Because IT IS fucking clumsy, and completely uninspiring!

[@rb93077039]

*Lego

[@beverlybell9017]

Huuuuhhhh..?...?.... My head hurts now.🤨🙃😐

[@XAVIERSHIMEX]

Before hormones treatment innit

[@MrKmanthie]

at 1st (before I watched this) I had to click this on & see why Amanda Peet would be involved in giving lectures on physics!! "Amanda Peet?" I thought, "she's just a Hollywood actress, not a bad actress, but yet, she's no physicist either!' Luckily, I read the above description of the OTHER Amanda Peet, the professor from the Univ. of Toronto, holding court on string theory, which, unfortunately, is a crapshoot, at best, to even get to a "theoretical" stage. At best, S.T. is an utterly untestable very complex, too complex (esp. given the logical nature of "Occam's Razor") to be given any serious thought, although, all kinds of diverging & unique ideas are what make the world go around, literally, in some cases. Anyway, glad we cleared that up.

[@ufotofu9]

IKR. I was like, "she's a physicist?

[@MrCervixtickler]

Great presentation though I must correct an error, the plural of Lego is Lego..... no s

[@johnnywilkinson9736]

An excellent presentation mared somewhat by frequent attempts at humour for most of which she alone sniggered

[@walterbishop3668]

stupid celebrity culture is just talking about her look instead of all that science shes talkin about

[@bernardofitzpatrick5403]

agreed!

[@theultimatereductionist7592]

WHO? QUANTIFY for me the NUMBER of INDIVIDUALS who are talking about "her look" instead of her science.

[@LeadingEdgeTraining]

Your username seems fitting of your attitude

[@aryehfinklestein9041]

Stupid celebrity culture is...stupid. So not really surprising. But pathetic nevertheless.

[@thesoccertrotter1]

She look like a man

[@viswagsena108]

useful Books for those looking at cosmic Dance of SIVA-origins- to string theory -where Science needs to progress.plasma regulated Electromagnetic Phenomena in magnetic Field environment in stages to universe Modelling.books on 1. plasma vision of the Universe-1993 and Vision of cosmic Plasma universe-1995- available at LULU.welcome invited lectures.

[@MindBetweenSound]

isn't the lowest state of an open string a "I" (one) and a closed string a "0"? so wouldn't that end up like binary code. going further a "0" would look like a "I" (one) from the side... just imagining...

[@diogeniscruyff1084]

She could give us some lecture about why all her videos about trancegenderism matters,the comment section is turned off!oh i forgot,the whole matter has nothing to do with freedom of speech,right?well....wrong!

[@JamesHolben]

You should watch a video on the research being done on the E8 quasicrystal...it totally blows String Baloney out of the water!

[@zikunzeng5871]

AW is just the best prof

[@jojolafrite90]

She kind of reminds me of the body langage of Patient Saint Pim from adventure time...

[@billy-joes6851]

It's easier to understand if you get stoned first, seriously. Can I get woop woop ?

[@TheNewPhysics]

The paradigm is unnecessarily complex. One can explain everything with a much simpler model. That is the reason I wrote nonsense and offensive to Occam's Razor. It is over parametrized and because of that, it cannot predict anything - unless you cook the results

[@biblical-events]

40:18 did she fart????

[@biblical-events]

yes she did :D

[@grumpsyo7301]

Hehe, best and most honest part of ITS lecture.

[@thesagaofdarrenshanfanchan793]

He do you mean

[@nealenrick]

Great mind but not a public speaker. She says “uh” three times per sentence. Too annoying to put up with for even five minutes-much less an hour!

[@vicioussyd6870]

She is a world renowned physicist in fact she is inthe top 1000 cleverist people on the planet she is allowed to uh every now and again whats your claim to fame moron

[@timelsen2236]

Video persons: Please stop following the speakers, these are not soap operas. Get retrained to properly video academic material. Can't we have a clear view of the entire chalkboard at some point, so we can freeze it to read it? This is the major defect of all on line videos. Its not supposed to be a stream of facial shots like Hollywood wants.

[@grandpaobvious]

Yours is the stupidest possible comment.

[@jnsd3226]

too many information to grasp！！.....

[@ishandeb334]

I agree with you. I had to pause at certain instances to grasp the concepts, but she does a good job of explaining in layman's terms. BTW, where are you from?

[@jmanj3917]

1:06:00 "Children should be seen and not heard" is a long-lived saying for a reason. If you want to bring a child to an adult oriented presentation such as this one, that's your decision as their guardian. But you don't have the right to force that child on the presentation, the presenter, or the audience. It's not cute. It's not endearing. And it doesn't add to the conversation, either. It's obnoxious. Stop putting children on the microphone. If the child has a question that you feel absolutely must be asked, then have the courage to get in front of the microphone yourself, and ask their question in a coherent way; preferably in a way that doesn't waste the time of, or offend the reasonable expectations of, the intended, adult audience.

[@martinbyrne1104]

Watched you on another video with blocked comments. Saw you in discussion with Jordan Peterson and would like to say whatever your pronouns I think you come across as a lovely human being. Thank you.

[@Robocop-qe7le]

A man, daaah.

[@jimmcewan417]

a billion miles per hour! talks far too fast!

[@nicosmind3]

No she doesn't. Youre the only one making that complaint. So why not slow the video down if you can't keep up. You have an option to click on, even on your mobile.

[@jimmcewan417]

Just an observation! I just think she should slow down a bit ! I guess I need to speed up my ears!

[@turtle2720]

@@jimmcewan417 I know I'm very late to your comment but you can slow down the playback speed on lower right...

[@TheGrenadier97]

Stay on Physics. At least there you sound less annoying (in a sense at least).

[@Simon-pl2zi]

that looks like a man speaking

[@admurf308]

I want to marry this woman...

[@whirledpeas3477]

Brilliant 🤭

[@grumpsyo7301]

Feel sorry for you son!