This interview is part of our Mathematics and Philosophy playlist series, created for Mathematics and Statistics Awareness Month. Starting Monday, 4/20/20, we will be publishing two mathematics playlists of all-new, never-before-seen interviews with renowned mathematicians! If you can't wait, the "Is Mathematics Invented or Discovered?" playlist is already available (and freshly updated!) on CTT's channel. Playlist - Is Mathematics Invented or Discovered? - kzbin.info/aero/PLFJr3pJl27pIp1EsDD2rYaTI7GxoXqrLs
@OjoRojo404 жыл бұрын
Lol, I can't believe this pedantic asshole. He's a Platonian.....not only he believes in ideas, but he thinks mathematics is the ultimate idea that explains everything. Plato said only the philosopher could get us out of the dark and show us the light, so we can only hope enlightened mathematicians like him can show us the true.......Give me a break dude.
@NicksterNOC4 жыл бұрын
@@OjoRojo40 I disagree. Also they talk about all the bizarre math that doesn't appear to tie into reality. Eventually they'll figure out how even those equations tie into the natural realm. Philosophy can explain how everything works, but math can show the mechanisms that make that happen. Penrose even talks about how consciousness is probably a quantum phenomenon so don't go around thinking he's close minded or a small picture type of person
@thysvanzyl27824 жыл бұрын
I am so interested to know what Sir Penrose thinks about the work of the Indian mathematician, Ramanujan. Ramanujan's ideas were apparently so powerful and 'visionary'.
@OjoRojo404 жыл бұрын
@@NicksterNOC You are proving he's close minded and so you are. "they talk about all the bizarre math that doesn't appear to tie into reality. Eventually they'll figure out how even those equations tie into the natural realm". The "bizarre math" could be a door for different forms of interpretation (again, it's bizarre but still math.....). Eventually they'll figure out how even those equations tie into the natural realm? What natural realm please... the natural realm of math??? "Philosophy can explain how everything works, but math can show the mechanisms that make that happen". You are repeating what Penrose said and his essentialist narrow view of philosophy. That's why he believes in mathematics as the "real" true that will get us closer to the ideal realm (in a Platonic sense) Philosophy most certainly can't explain how everything works, hence math like I said, will never have any response to the most fundamental metaphysical questions of humans. "Penrose even talks about how consciousness is probably a quantum phenomenon", I really can't see how this help his case. Consciousness reduce to a physical interpretation??? Maybe you can help me. Thanks for your time.
@Lorendrawn4 жыл бұрын
Even philosophy KZbin video comment sections become toxic. You guys are taking quarantine very badly.
@megamillionfreak3 жыл бұрын
We are immensely blessed to be living in an era where such minds are available for our casual consumption and for free.
@xgengx75303 жыл бұрын
Indeed
@johncastillo85513 жыл бұрын
@M Grant the internet WANTS you to think that it has improved your life… and that you are gaining knowledge from it but in reality it is gaining knowledge from YOU… the Plutonic world needs to be left alone or else it will enslave us all… it has lurked in the shadows before the existence of time and WE are what it has been waiting for… WE WILL BE THE HOST IT HAS BEEN WAITING FOR!
@fadelfakih35113 жыл бұрын
Can't agree anymore
@ChosenPlaysYT3 жыл бұрын
And we waste it on TikTok watching morons.
@lailandadumbmathematician77473 жыл бұрын
@@ChosenPlaysYT People will always find ways to 'waste' time. That's their choice, but there's no reason to insult anyone over it.
@simonhallin89093 жыл бұрын
When he talked about molecules and atoms, in the beginning, I thought, nice! A mathematician who seems comfortable in physics. Then I searched him up and found out he has a Nobel prize in physics. I guess he's more than comfortable.
@festusbojangles70273 жыл бұрын
why would you put your own picture on the internet? thats kind of weird
@EnjoySackLunch3 жыл бұрын
@@festusbojangles7027 why do you eat snails
@festusbojangles70273 жыл бұрын
@@EnjoySackLunch be quiet pooh pooh
@EnjoySackLunch3 жыл бұрын
@@festusbojangles7027 rude
@ccunliffe3 жыл бұрын
@@EnjoySackLunch Why do you enjoy sack lunch?
@Treador554 жыл бұрын
9:00 if you are wondering where the title question starts.
@chuckmanson60924 жыл бұрын
Thank you.
@wkmalory4 жыл бұрын
here for Penrose so no need to fast forward nice that one of you for every video tho
@NoOne-ky1er4 жыл бұрын
Tell me his answer too
@333peacher44 жыл бұрын
@@NoOne-ky1er both.
@infinitenature7034 жыл бұрын
@@333peacher4 that's not what he said
@stellarwind1946 Жыл бұрын
It’s always a privilege to listen to the great mind of Sir Roger Penrose
@trajan753 жыл бұрын
Roger Penrose was awarded the Noble Prize for physics when he was 90 years old; That was an astounding achievement. I am in my early 70s, I can only tell you younger people that to be able to think clearly an and creatively at that age is truly astounding.
@ysph2 жыл бұрын
eh, we're too dumb to even recognize if roger penrose was developing dementia or something anyway.
@dustypope35712 жыл бұрын
I am in my pre-fifties and I find that achievement unfathomable!
@crustyoldfart2 жыл бұрын
Well since we're all bragging about how smart we are - I'm in my late 80's, and surprised that Dr Penrose believes that mathematics is not an invention, but is " absolute " in some sense. I greatly admire him for his achievements - who would not - but I take issue with this statement. He himself invented Penrose tiles. Would he claim that these are not inventions but in some sense a revelation of something absolute ? Why is there a Nobel Prize for Physics, and no such prize for engineering ? Such as suggestion is absurd of course. But it illustrates in a small way the difference between the real world and the abstract world of mathematics. Nobel Laureates have bragging rights in a way that many useful people grounded in the real world cannot aspire to.
@trajan752 жыл бұрын
@@crustyoldfart Harold, congratulations on being so articulate in your late 80's although I must say that your notion that mathematics is a pure invention is nonsense. It is a bottom absolute and, just to get your dander up, it is one of our insights into he nature of God.
@crustyoldfart2 жыл бұрын
@@trajan75 Thank you for pointing out that what I suggest is nonsense. The thing I always bear in mind when receiving a gratuitous insult is that it is delivered with sincerity, and am accordingly appreciative. Your second strategy of invoking God, far from getting my " dander up ", I take as a clear warning that any further dialogue on the subject is impossible. For the benefit of others who may be reading this I would suggest that the conclusion that I for one draw from Kurt Goedle's result that mathematics can contain true statements which are unprovable, suggests that mathematics is a self-referencing system, no more, no less. On a slightly different tack: the great Michelangelo is reputed to have said that the awkward block of marble he chose to work on had contained the figure of David within it all along, and all he had done was to reveal the figure. Could this be a metaphor for the history of the development of mathematics ?
@jaydeeppatil14884 жыл бұрын
Amazing interviewer.Asks pricise questions and let the guest speak without interrupting.rare quality in today's interviewers.
@irfanjeelani95874 жыл бұрын
Call aurnab
@alpacino48574 жыл бұрын
when smart and intelligent people talk, we listen ... that's how we learn from the best
@mruse71804 жыл бұрын
8:20 “There are wonderful examples like the ...........” (there are so many great insights In the recording, but that moment was tantalising!)
@jolttsp4 жыл бұрын
That's what happens when the interviewer has a genuine appreciation and interest in the guest
@michaelwoods29034 жыл бұрын
@@jolttsp But also doesn't have a proper grasp of math to ask the next pertinent question, which is; why are those math patterns there if nature isn't using them? You can't describe something then offer no explanation for them! The reason why Penrose doesn't do so is because he's locked into tradition which is the opposite of the scientific method ; it's the same old anti Galileo stance; an argument from authority --and what makes it infuriating is - that Penrose is smart enough to realize it!
@LearningPulse14 жыл бұрын
Today he was awarded with Nobel prize.
@GamesBond.0074 жыл бұрын
Maybe that large part of maths applies to the dark matter part of the universe ? Which is huge compared to the visible one. So that would explain why only a tiny part of maths applies to the visible universe, which itself is a tiny part of the universe.
@londoncalling78954 жыл бұрын
It's all relative man ;) and Penrose is massive in my universe .
@amitprakashjha18214 жыл бұрын
I came to this video only after I learned that he got Nobel :)
@Chaosdude3414 жыл бұрын
Incredible! Thank you. I had no idea. Excellent news!
@michaelwoods29034 жыл бұрын
@@GamesBond.007 Why is he wasting his time on black holes when they can't explain why a snowflake occurs? They can't explain biology. Science is still locked in the past and the academics are just preening each others' intellects with these Nobel prizes when they are too scared to admit they can't solve the major problems with science like the contradiction between the 2nd Law of Thermodynamics and Evolution.No wonder the general public is so skeptical of scientists, because they are not holding each other to account.
@eduardo63807 ай бұрын
He answered the question with more questions. A wise man
@thecoton61524 жыл бұрын
Mathematics is just reverse engineering the source code of the Universe.
@mattgalloway77864 жыл бұрын
OH really? Explain that..
@iminalert92894 жыл бұрын
@@mattgalloway7786 Mathematics is one of the way to understand and comprehend what Universe says . Its universe's language .
@balloonsystems87784 жыл бұрын
Other way round: The Universe emerges due to the existence of mathematics.
@aoxy874 жыл бұрын
@@balloonsystems8778 Max Tegmark ?
@Llllillilililililillll4 жыл бұрын
ishkar it's pretty self-explanatory...
@soggy71423 жыл бұрын
The amazing part is how someone so intelligent can describe things so incredibly well that everyone can follow along.
@oyounes59453 жыл бұрын
He's unbelievable
@fettigeredgar3 жыл бұрын
Truly understanding something means being able to explain it in a simple way :>
@milee1053 жыл бұрын
Icant understand anything guess im just stupid
@SanjaySingh-oh7hv3 жыл бұрын
That's proof that he is truly intelligent. People that can explain complex phenomena in simple terms truly understand it. Contrast with arrogant professors who try to snow their students with lingo and jargon that took them years to perfect, and then they dump it on undergrad students and make them feel bad, which is what some profs want.
@satoshinakamoto72533 жыл бұрын
that means he understands it
@shadowfantasiesf85562 жыл бұрын
This makes you wanna do math. I never in my life had a teacher, that had the same philosophical euphorism that these to convey. It's such an obvious thing you would need to convey, in order for a student to care about learning it and yet nobody does this.
@Vertical-sandwiches2 жыл бұрын
hahaha
@kiwibrainstorm14872 жыл бұрын
There is a big difference between doing / researching math, and listening to someone that does it...
@daviddempsey8721 Жыл бұрын
It really does, doesn’t it? Nothing stopping you! There are lots of interesting Math teachers on KZbin exploring it for the joy of seeing and understanding more. See Eddy Wu’s TED talk about what Math is for - Australian Math teacher. kzbin.info/www/bejne/honahKeaqrOqZ5Y
@shadowfantasiesf8556 Жыл бұрын
@@prisvizbay6913 This isn't blaming. In fact I loved math as a kid. But that came from myself and not the teacher and that's the point.
@grostoss4259 Жыл бұрын
@@shadowfantasiesf8556 I hated math when it was only abstract and physics and then started playing with computers. Oh boy do I love math and logic now. Sometimes it is only about what peeks your interest !
@joemcfatter11702 жыл бұрын
Dr. Kuhn, just to say your overall program and interviews are a gift to our world today. Thank you for creating and capturing all these wonderful discussions.
@jamessykes27603 жыл бұрын
"Pure mathematics is, in its way, the poetry of logical ideas." - A.E
@trapbeatproducer3 жыл бұрын
🥺❤️
@words0072 жыл бұрын
This is not philosophy philosophy pertains to single statement giving multiple logical meanings. All religions on earth are basically philosophy because every reader gonna take different meanings out of it. Mathematics, NO WAY. 2+5 is still 7. And in year 3022 it will still be same 7-2= 5. Same Math is a language and humanity's logical mind operates on it without a sweat. It is unchangeable by our feelings and moods. Science doesn't change of reality based on our moods thats why Science and Mathematics are always used together from where i came from.
@ursamajor772 жыл бұрын
Well, doesn't that beg the question. I believe we can only say for sure, that it is 'our poetry of logical ideas', not 'the' poetry. Maybe it is, but probably we will never know.
@dxk20072 жыл бұрын
Sir Roger is a mathematical legend. I read his books in high school and college in the 1990s. His achievements are inspirational, and he stands among the greats like: Dirac, Hilbert, Poincare, Lagrange, and Hamilton.
@ysph2 жыл бұрын
because of the like... logic disconnect that seems to be the main hurdle for most people when trying to learn math, do you think folks like einstein or penrose are more lucky or do you think they would've been exceptional at whatever they did? in this particular circumstance, i find myself entertaining the idea of luck. for me, i just suddenly got it after years of overlooking and immediately realized that we must all have been doing basic algebra in our heads all the time, even when we're babies and even mentally handicapped people. hell even when we were covered in fur. math is native to the way the human mind works at least and i believe it's native to the way intelligence itself works. discovered for sure.
@jgcaesar42 жыл бұрын
Don't forget Gauss. :-)
@bernardthedisappointedowl69382 жыл бұрын
@@jgcaesar4 People just don't make enough noise about Gauss, ^oo^
@TAYLORFAN502 жыл бұрын
@@jgcaesar4 - And Dr. Suess! 👍
@ivok98462 жыл бұрын
@@ysph "do you think folks like einstein or penrose are more lucky or do you think they would've been exceptional at whatever they did?" last time that was possible was stone age, when they had 3-4 things to pick....and all were simple
@13e11even113 жыл бұрын
Remember hearing a great story. I hope I can tell it right. A mathematician walks into his colleagues office to find him reclined in his chair practically motionless with his eyes closed and then slowly steps back out saying “I am sorry I did not know you were working.”
@OtaBengaBokongo3 жыл бұрын
it's weak story not great
@13e11even113 жыл бұрын
@@OtaBengaBokongo gee thanks for weighing in🥱
@OtaBengaBokongo3 жыл бұрын
@@13e11even11 you're welcome
@eugenecalma18073 жыл бұрын
After laboriously tending to our garden at school, we took a drink of water and our math teacher yelled at us saying " you guys sweep the floor while taking your rest ".
@benjaminwilkinson96753 жыл бұрын
@@OtaBengaBokongo What a low iq comment
@coder-x7440 Жыл бұрын
I wish… that as a kid, someone had described math to me in this way. That it’s something humanity discovered. It exists independent of us, it’s not all understood or discovered. And in order to predict how reality will play out, you need to understand math. It describes reality, past, present, and into the future.
@SpaceCadet4Jesus Жыл бұрын
Mathematics may make future predictions and depending on all sufficient factors known may describe present reality of which we are ignorant, thereby looking as if it created something. In other words, our mathematics cannot bring into reality that which doesn't exist. It's only an inbuilt fabric tool which have discovered, are using and learning from.
@MrBoudreaux19765 ай бұрын
Starting in the fall I'll be a Special Education teacher. I'll have a caseload and also be teaching Math Literacy (I prefer this to calling remedial math) and Pre-Algebra. I've already decided that we're not going to do endless worksheets of endless rows and columns of arithmetic problems. It's going to be a fully integrated class. We're going to talk about history, we're going to work with artistic practices and how they relate to math, and we're going to journal about our struggles and victories in study. And whenever the math question comes up, as it invariably does with sighs and groans; "Why do I have to learn math?" I'll answer we get to learn math because it's beautiful!
@paharipant25 ай бұрын
its the closest we get to glimpse the God mind
@nngnnadas4 жыл бұрын
-Is Mathematics Invented or Discovered? Mathematicians: Yes.
@lilhikaru83614 жыл бұрын
Well actually he's giving a very precise answer in this case
@tomazkavsek2364 жыл бұрын
He says that it is discovered, but saying it simply will deprive you of the path how to understand it. Adding to that, It's only our language that applies to the physical world as it is.
@jnananinja74364 жыл бұрын
Is the universe invented or discovered?
@effedrien4 жыл бұрын
@@jnananinja7436 God discovered it when he was trying out everything what was mathematically possible. It must have been trial and error with no specific goal in mind, so you can't call it an invention.
@classicalharmonicanalysis33484 жыл бұрын
Math professional here. Great answer. Fun question to ponder when you've had too many beers to drink or have nothing better to do (and the latter is rarely true.) I tend to think math is invented as a language that can be used to unravel scientific truth, but that's my opinion and I don't care at all if anyone else disagrees.
@laylaspacex3 жыл бұрын
Mathematician: "Math is the language of the universe." Physicist: "Math is the language of physics." Engineer: "sin(x) = x."
@adamrobinson49823 жыл бұрын
CAD work flash backs lol
@rubensano48603 жыл бұрын
Engineering. I've got the knowledge.
@joecrook17253 жыл бұрын
also pi=e=3
@adlg51583 жыл бұрын
pi = 3 = e = sqrt(g)
@ahmadtariq39602 жыл бұрын
@ASquadWiper tan(x) =sin(x)
@thomaswalsh2873 жыл бұрын
For an egghead, the man is very engaging. He gets his points across with great clarity. When a super genius explains things well enough so that even a cave-dweller like myself can understand, he is an exceptional communicator. Thanks professor, and congratulations on your Nobel prize....
@tiffanyh12743 жыл бұрын
Fellow birdbrain here, I also agree.
@andrew4life3623 жыл бұрын
Yeah, fellow failure and lizard brain here, we all seem to agree, over.
@jonwhite5493 жыл бұрын
Egg head?? The sign of a smart person is someone who can break down deep topics to a child, many ppl who want to be noticed as smart are just verbose in many cases.
@tiffanyh12743 жыл бұрын
@@andrew4life362 🤣🤣🤣
@davinbaker10453 жыл бұрын
Wait. Smart people can talk too? All life: lies.
@Jacob-jg6cd2 жыл бұрын
Access to conversations like this are magnificent to have available online.
@MrSaemichlaus4 жыл бұрын
The principles and the phenomenas are real, we're just figuring them out and giving names and labels to them.
@johnburnham62394 жыл бұрын
@Jeanette York Are you saying here that math is fundamentally a mental experience? If so, why?
@MrSaemichlaus4 жыл бұрын
@@johnburnham6239 Nature is as it is, things happen in it even without our existence or awareness of them. The behaviour of matter and non-matter apparently follows certain patterns depending on their level of complexity, which apply to all of its parts. The apparent fact that there is this consistency at some level is what gives us hope to understand everything, as a random, chaos sandbox of particles would defy any attempt to intelligently interact with it. Now what I call Mathematics is the collection of models, tools and language that allow us humans to analyse (past) and predict (future) phenomenas qualitatively and quantitatively, to derive certain characteristics of them that are used for purposeful considerations and to communicate findings between ourselves effectively. What we always work with are models. Models simplify reality from lumps of matter consisting of inconceivable complexity down to primitive representations like points, lines, spheres, cubes. As the world changes, we update those inner models and all of our rational process is done on this model, while being aware of significant differences between this model and reality to a certain extent. Also, across time we discover new models, such as in astronomy the flat earth model -> globe earth model or the geocentric model -> heliocentric model. As those methods of simplification become more effective at retaining detail, our predictions become more accurate. Personally, I'd replace the word "natural law" with "natural pattern", as that would further outline the fact that the behaviour of nature is independant of our understanding of it. We're merely observers and we're working on efficient simplifications of reality to run certain calculations and algorithms which we found to be useful. Math observes patterns. Why those patterns are what they are may be a question for quantum mechanics or beyond our horizon of material analysis, philosophy.
@johnburnham62394 жыл бұрын
MrSaemichlaus so I apologize for not specifying in my comment, but it was addressed to Jeanette York. So I wasn’t assuming any of your meaning. But since you’ve made a comment, it does seem to me that you, like her, are calling math a mental, human thing. It’s the language that’s math. Language is fundamentally mental in origin. Also, “models,” “tools” sound like they can mean many things... A scale, a ruler, and a toothbrush are tools that might help me predict the future or past, but none of these is a piece of mathematics. And it seems to me like pure math has no necessary bearing on the physical world at all. So math wouldn’t fundamentally be about “analysis” and “prediction.” Though also I see no reason why one can’t analyze a prediction... Honestly I was under the impression that analysis just meant “a breaking up into pieces” as opposed to having some reference to the past. And I can’t think of an instance of math describing anything in a non-quantitative way.
@johnburnham62394 жыл бұрын
systematic self organization for some reason I got a notification for this comment... were you replying to me? As in everything’s a mental experience?
@MrSaemichlaus4 жыл бұрын
@@somedumbozzie1539 Good quote! I read another one in a math book about ten years ago, it read something along the lines of "If you know the differences between lots of things, that's great. If you see parallels (patterns?) amongst lots of different things, that's excellent."
@warrenpeece17264 жыл бұрын
I hope the IRS doesn't discover the math I invented!
@TheBlurayHacker4 жыл бұрын
Good joke
@ThePeaceableKingdom4 жыл бұрын
!!!
@AfricaRecapped4 жыл бұрын
@@coffeebean7340 😂😂😂💀nice
@SOLIDSNAKE.3 жыл бұрын
Ohh please please tell me!
@upuldi3 жыл бұрын
Gold
@tripp88334 жыл бұрын
This guy is a great interviewer. Like a common guy who is really curious
@GeoCoppens4 жыл бұрын
Lots of times he is asking nutty "deep" questions.
@timkbirchico85424 жыл бұрын
a common rich guy, oxymoron
@AndrewDavidBaron4 жыл бұрын
Raziel Lentz hot tip...no one does
@DarkestOne74 жыл бұрын
common guy with a phd
@mytube20134 жыл бұрын
I feel he is a science guy too. His voice is rich though.
@CJ-gn8qm Жыл бұрын
As a protagonist in engineering for more than 40 years I still get bamboozled by the depth of maths and it’s relation to physics! (This was by far and away my favourite subject through high school) I recognise that this work is vitally important for human development but there is a point at which we have to make sensible decisions that mean we can develop in a cost effective and acceptably safe way! There is somewhat of a philosophical position to take!
@NewWorldSinner Жыл бұрын
who the fuck upvoted this ai
@Neohedra10 ай бұрын
Yes you’re right, because we have become so dependent on production rates, and etc we have detached ourselves from the philosophy of science in our western society and almost the entirety of civilization
@keithlauderjr16914 жыл бұрын
I don't like numbers, there's like too many of them. - Beavis
@maxnaz474 жыл бұрын
I will stop at nothing to avoid negative integers. - Someone
@stephenfiore99604 жыл бұрын
*....Who ever invented “zero” - said it was nothing...* -Butthead
*......IF YOU DONT LIKE REAL NUMBERS, then use IMAGINARY NUMBERS...* (They are real also-see Google...* ME ME
@stephenfiore99604 жыл бұрын
*....IT IS PHYSICALLY impossible to keep on dividing a string in half...* You eventually get to a quantum level....that can’t be divided anymore and ... It’s physically impossible to keep dividing a SECOND in half-You come to a quantum limit..*
@tonywong12593 жыл бұрын
A group of mathematicians were trying to measure the height of a long flag pole but it was too high. A group of engineers came along and said they could help. They pulled out the flag pole and laid it on the ground and had no difficulty measuring the pole. The engineers smiled and left. The mathematicians scoffed at the engineers, "Engineers! We wanted the height, they gave us the length!"
@coolworx2 жыл бұрын
Some ancient Greek dude stuck a one cubit stick in the ground and measured it's shadow to be 3/4's of a cubit. He then measured the shadow of the flagpole and found it to be 15 cubits. Looking at the engineers and the mathematicians he announced: "It's a score!"
@nawgra84552 жыл бұрын
🤣
@akumar73664 жыл бұрын
Fantastic presentation, Penrose is a wonderful intellect.
@michaelwoods29034 жыл бұрын
No he isn't. He refuses to follow up the scientific method to admit that Math is all causality; he's resorting to emotion in supporting tradition that physics alone is not causality even though he partially admits it in this interview. Shocking!
@lightworker45124 жыл бұрын
@@michaelwoods2903 I don’t think the universe was created randomly. I think there is a Creator energy behind the scenes. I am not religious but I am spiritual and believe without a doubt that causality is not the full explanation.
@hakonaae96363 жыл бұрын
@@lightworker4512 Why?
@lightworker45123 жыл бұрын
@@hakonaae9636 I don’t know. Understanding consciousness will be a start to beginning to understand. We can study the 3D world, but I believe through my own NDE/ spiritual awakening that there is much we do not know. a patient asked me, do you think my daughter....she stopped mid sentence. An overpowering feeling of love immersed her and me at the same time. We couldn’t even speak, we were frozen. The feeling soon passed and she said, oh my God, my daughter is fine. Thank God. I’m Catholic and she committed suicide and I was going to ask you if she was Hell as I have been a nervous wreck. And I got the answer. Over 20 years, I have many stories, many much more paranormal. I used to be an atheist but not any more. Many people are unbelievers and that’s fine.
@akumar73662 жыл бұрын
@@michaelwoods2903 A Nobel prize suggests you are wrong.
@ramesh.programming4 жыл бұрын
Congratulations to him for winning Nobel Prize 👏🌟
@FlamingRobzilla4 жыл бұрын
Relationships are discovered, the method of discovery is invented.
@TeaParty17764 жыл бұрын
Methods of knowledge are discovered. Mind has a specific nature ,thus it acts in a specific way.
@FlamingRobzilla4 жыл бұрын
@@TeaParty1776 I think you have it backwards.
@TeaParty17764 жыл бұрын
@@FlamingRobzilla ?
@TeaParty17764 жыл бұрын
The method of discovery is a natural power of the natural mind. It is discovered as much as the universe is discovered. Subjectivism is the death of the mind.
@johnmagelus68954 жыл бұрын
The nearest i can describe it Good's language.
@emanuellopez85784 жыл бұрын
He's 88, impressive
@nonserviam7513 жыл бұрын
Now he's a Nobel laureate.
@waterkingdavid3 жыл бұрын
He must be 89 now. Good math eh?
@didyoustealmyfood87293 жыл бұрын
@TyLEr is he rich?
@Wykesidefruitmachine3 жыл бұрын
Age is just a number.
@S-L-J2 жыл бұрын
I would say, neither of both, but we deciphered and still deciphering it. Mathematics is a language of our universe and as with any unknown language, we try to figure out how does it work. Every time when we find out how something could be mathematically explained, we have deciphered a new area of this language.
@Neohedra10 ай бұрын
Science is not like the ancient bone we dig up at an archeological dig. It is more like the conjecture we assign to that bone. Science, in fact, is not a body of knowledge at all. It is a methodology, or the outline of one, for discovering knowledge. But it is the equation, not its solution. And it is an equation that can take many different forms. There is not one equation, or very, very few, that rise to the level of “law.” Mathematics is no different. We didn’t “discover” it buried deep in the earth somewhere. We - humans - developed it. As the physicist Sean Carroll notes, equations are “just a way to compactly summarize a relationship between different quantities.” And “A function is simply a map from one quantity to another quantity.” Mathematics, in other words, is simply a system or notation used to attempt to understand the world around us - emphasis on attempt.
@Soylent19812 жыл бұрын
I love thinking about these topics. It’s gives me a great sense of awe at the natural world.
@MrMurl2 жыл бұрын
it’s the bomb
@xXTopGXx2 жыл бұрын
if you believe mathematics was discovered they probably still think Columbus discovered America.. periodtt
@paulg4443 жыл бұрын
I like Penrose, he seems like a very humble man. And the interviewer is likewise. Two good men grappling with the most important questions in life.
@En-of5oh9 ай бұрын
What I understood from this video, mathematics has two functions, one it enables us to understand the behave of objects and fields, either they are classical objects or quantum particles, either field or quantum field, the second function, mathematics serves the reality that not need to be proven by any means, reality that stands there for us to discover.
@jcr9124 жыл бұрын
We certainly didn't invent it, but we invented its language. When you look at anything, even if you aren't aware of mathematics, you can tell the difference between one of something and a hundred of something, even if you don't know what they're called or how to describe it. Mathematics is the language we invented to describe measurements of things around us, the labels and lengths we use are only a way to navigate through what is built into the universe.
@eltonmayo20274 жыл бұрын
really. like the mississippi river was 'discovered'. mankind had to 'invent' bumping into the river's edge. took alot of brain power to fall into a river.
@diggitus4 жыл бұрын
This doesn't settle the philosophical debate though. It just punts it down the road a bit.
@peteraka37834 жыл бұрын
I believe the term mathematics is used to describe two things. At times multiple invented languages, and at times a prior reality of relationships. There are multiple math languages that can describe a problem - I have seen the same problem on youtube solved with both geometry and calculus.... both were valid languages to describe that solution - since a particular problem/solution is abstract until it finds a physical use you could argue that mathematics 'discovered it' before physics did... however since two pretty independent branches of mathematics can be used to solve a problem you can argue that they are just 'inventions'.
@jcr9124 жыл бұрын
@Razor Face I don't believe the characteristics of the universe were invented by man.
@Asak9994 жыл бұрын
@@jcr912 i think that to exist characteristics is necessary an observer to interpret it, without an actor there's no math.
@LS-qu7yc3 жыл бұрын
I love Penrose so much. I feel intuitively and logically that his answers are correct about mathematics being a discovery. Our labels of math and language are the invention, the reality always existed.
@asherujudo73833 жыл бұрын
I'm not a mathematician and I struggled with it in school but I completely agree. It always seemed that way to me. Like, mathematicians were in fact simply inventing a useful language to describe naturally occurring phenomena. I always liked the concept of math and I feel like if I had had more patient teachers I would have really gotten into it.
@gordonconlogue56864 жыл бұрын
I love the old books in the background
@mannytps99863 жыл бұрын
I’d love to read one
@zauber620 Жыл бұрын
What I find most intriguing about mathematics is that it seems to be a self annihilating language. When we look at quantum mechanics and consider, just to name a couple, the work of Heisenberg and Schrödinger, what we see is that mathematics itself led us to a place where all calculations become void and irrelevant because it is impossible to mathematically predict the behavior of existence itself when we are faced with its particle-wave duality. I find it to be so poetic that mathematics itself had proven to us that the quest to understanding the universe/multiverse at its most fundamental functions will require a language that would be very far removed from the nature of mathematics.
@Ilestun Жыл бұрын
Schrödinger wave function equation is fantastically simple mathematically speaking, very elegant and ez to kno by heart. It just happens that we can't find the exact solutions of this equation.....just like countless other equations in physics (like the plasma equation form Botlzmann). But we can discover some properties from the solutions, like Cedric Villani did with Boltzmann equation of plasmas, it even won him the Fields medal.
@pohjoisenvanhus4 жыл бұрын
My intuition tells me that reality has a structure and math is an expression of that.
@bottytoohotty4 жыл бұрын
Its called Khufus Pyramid.
@georgejo79054 жыл бұрын
only information exists
@georgejo79054 жыл бұрын
@ayoub laarouchi proof is not availlabel and may never be. One problem is a version of The incompleteness theorem. If you try to falsify the hypothesis that only information exists then you would have to so within the realm of information and mathematics . en.m.wikipedia.org/wiki/Gödel%27s_incompleteness_theorems It is a problem of a system looking at it'self , a self referential regress ad infinitum. Another way of posing the question is equally valid ie Is there anything other than information in reality and if so can you prove that. This has has one advantage that if true that there is something other than information and and it is falsifiabel then it would not be a problem of the incompleteness theorem . In an earler version of this problem was the refutation of Berkeleys immaterialism by Samuel johnson en.m.wikipedia.org/wiki/Appeal_to_the_stone Berkeleys immaterialism was given little recognition at the time due to its seeming absurdity but in the 20th century it has become regarded as important in light of the incomleteness theorem and quantun theory A historic view of berkely and johnson www.irishphilosophy.com/2016/03/12/berkeleys-immaterialism/
@iisaka_station3 жыл бұрын
“There is geometry in music. There is music in the spacing of the spheres.” Pythagoras
@bobbysilver2723 жыл бұрын
Ever since Ant Man came back from the Quantum Realm our understandings of things have really progressed at an amazing pace.
@streetkaraoke303 жыл бұрын
Yeah, and destruction too
@slyder254004 жыл бұрын
Mathematics emerges when you try to understand relations in a complex system. It just happens that in our universe everything seems relational so it makes math a good candidate to understand it.
@tsumade04 жыл бұрын
I think you have the best definition here
@benandsylvia4 жыл бұрын
That is an excellent way of understanding it.
@sayamqazi3 жыл бұрын
Let me change your statement a lil bit. "It just happens that the interpretation sensory data collected by our consciousness seems to have relations"
@stuntmusicgameshow3113 жыл бұрын
I like this answer.
@stuntmusicgameshow3113 жыл бұрын
@@sayamqazi thanks, but no thanks. i like siduxs’ answer enough ;)
@cassiuscramos Жыл бұрын
Delightful interview to listen to. I had to watch it many times, because at many points my mind went far away thinking about what they'd just said. Very good!
@jamesbenning9665 Жыл бұрын
My thoughts exactly. They would make wonderful dinner guests. I've often wondered whether the apparently trivial or superfluous aspects of mathematics is a clue as to what we might be missing out there in the real world.
@horariojoselo71783 жыл бұрын
I really don't know what to say except "Thank you Roger!". Your thoughts are the beacon of our lives. And also thanks to Closer to Truth.
@vhawk1951kl2 жыл бұрын
Whose truth?
@vhawk1951kl2 жыл бұрын
You are a romantic
@estrellasirio3 жыл бұрын
It is a wonderful video. I have to congratulate everyone who has participated in it, not only the great R. Penrose, because the most important merit is having shared it for free. Thank you. This video should be seen in every school in the world.
@jjt18812 жыл бұрын
One of the best short discussions about the topic of philosophy of mathematics, and with some insights into the interactions between mathematical structures with the real world. e.g. what Eugene Wigner called "The Unreasonable Effectiveness of Mathematics in the Natural Sciences". He has what I call a beautiful mind.
@TheMan218922 жыл бұрын
I’ve always thought “Mathematics” is universal, we just invented a language for it.
@javiervasquez6252 жыл бұрын
That is right do not let the "skeptics" twist words around and make baseless claims about mathematics just been an spontaneous chemical process with which humans are able to calculate things in order to achieve certain values that help us in the day to day as it further clouds the evidence that there is far more to the Universe that our minds are currently capable of seeing and understanding. Wether that is something akin to "God" or some grand spiritual power rest assured it's more than likely more real than the bigotted naturalist dogma that the skeptic community profess as fact.
@Jrpyify2 жыл бұрын
Mathematics is the language. The thing it describes is just "what is" for lack of a better label. It's like saying "[the things described by] English is universal, we just invented a language for it" which is technically accurate but also sort of an uninterestingly so.
@foulmercy80952 жыл бұрын
@@Jrpyify So you're saying the "discoveries" counts as "what is"? And that mathematics is the language we use to describe it? In the same way, English and French have a word for dog, Indian math and Anglo Math has a "word" (equation) for 1+1?
@user-or3bb6es5h2 жыл бұрын
@@Jrpyify Mathematics doesn't describe everything though, such as the nuances of natural language, qualitative aspects of our experiences, such as feelings, emotions, and our inner sense of consciousness. Mathematics is part of our Universe, and there seems to be parts in it that could be even beyond our Universe, without any current known application. For example, we only need to know around 40 digits of pi to perfectly calculate the radius of the observable Universe to the width of a hydrogen atom. And we know that the Universe isn't infinitely divisible. At a specific point, we reach the Planck scale. Mathematics is all about measuring and making predictions. It is an essential part of our Universe, but it isn't the whole picture. We still have no idea how qualitative aspects such as being self-aware and experience feelings and understanding, are interrelated with quantitative aspects.
@tjmarx2 жыл бұрын
Mathematics can only describe those things that we know, think we know or suspect. It can not describe the unknown. In that context mathematics is the language of describing those things we want to describe, in the way we wish to describe them and it's accuracy is only related to our own understanding. Calling mathematics, or what it describes a discovery is like taking a video game or the computer it runs on and calling that discovered. Neither are discovered. It's just doing the thing it's designed to do, spitting out the information it was designed to spit out.
@michatroschka4 жыл бұрын
its like a language for us to interpret the universe. of course it doesnt "use" math, it just so logical that it can be expressed with maths. for example how the atoms behave and frequencies isnt becase of maths, its because of physical laws which can be described with maths. i was looking at a forest with beautiful trees once with a friend and he said "its all mathematics" and he couldnt be further from the truth, because maths is just our description of nature, not the cause.
@shum81044 жыл бұрын
your friend is right. mathematics is logic. mathematics is more than just an expression, and the fact is no one invents theorems in mathematics because if it were it could be changed. it's set in stone. your interpretation is incorrect and it's frustrating how someone with such a faulty understanding of mathematics would think they're in the position to be condescending.
@michatroschka4 жыл бұрын
@@shum8104 ok, you seem to have a point, mathematics is logic, and nature is bild upon logic i agree. Id be interested if you could further educate me
@Snuusnuu693 жыл бұрын
@@michatroschka I will simplify it for you. Whether humans existed or not, the mathamatical principles that govern the universe would still be there. Humans have created the formulas for better understanding about these natural laws, but we didn't invent the laws themselves. It's similar to computer code, it is a "language" on which we use to describe what we have discovered about the universe and how it works.
@michatroschka3 жыл бұрын
@@Snuusnuu69 thanks for describing it in simple terms and it is well understood what you mean, could you name an example for those principles in nature you were writing about?
@Snuusnuu693 жыл бұрын
@@michatroschka The fundamental laws of the universe. Physics, trigonogmetry/calculus, probability and statistics, chemistry. The building blocks of the universe. If you punch a brick wall, there are fundamental principles dictating that an equal or greater force(with a greater probability than chance) will stop your fist from passing through it. Another example you will learn about is called the 'golden ratio', which is found in abundance in nature. It is another mathematical formula to study. I will tell you, going to college is where I came to truely beleive that we are either living in a simulation(simulation theory), or there really is a God/God mind that created the universe. To me, it takes more faith to beleive that all of existance came from absolutely nothing, no matter what you beleive in. Good luck on your path to enlightenment.
@shankarlakshmanan61674 жыл бұрын
“I had been dead for billions and billions of years before I was born, and had not suffered the slightest inconvenience from it.” - Mark Twain. The context of the quote is the fear of death, but it applies here. Two and two was always four, we just happened to stumble upon it.
@th4fl4sh44 жыл бұрын
Great comment. It makes me wonder if we could've found/invented a different math altogether and it would still work? For example, what if we didn't have addition and subtraction. Two divided by 0.5 also equals four. Would we still be able to describe the universe?
@shankarlakshmanan61674 жыл бұрын
@@th4fl4sh4 Thanks, the Math we know is at one level, simply the consequence of the Universe as we observe it.
@davidschneide54224 жыл бұрын
Death only pains the living.
@mick51374 жыл бұрын
Twain cribbing Epicurus.
@TheBaconWizard4 жыл бұрын
meh. Not the point. Maths is able to describe a PERFECT circle, quite easily. No such thing exists in nature. So maths is a human construct that approximates (generalizes) the rules of nature.
@VennFilmmaker4 жыл бұрын
We invent the characters and symbols used to explain mathematics but the formulas, the very essence of it is just something we discover
@michadavi61023 жыл бұрын
Mathematics may be derived from logic, including functions
@FalkFlak3 жыл бұрын
depends on what you do with the language. In science you need observations. Not every function one can come up with is automatically reflected in reality.
@T.image793 жыл бұрын
@@FalkFlak You are obfuscating with fancy words. Mathematics is discovered. Not invented. Every ancient society from the Middle of Africa to China has records of Advanced mathematics using their own symbols to describe the exact same concepts.
@FalkFlak3 жыл бұрын
thats not what I meant.
@T.image793 жыл бұрын
@@FalkFlak In that case I Clearly I didn’t understand you properly dude.
@deegee68632 жыл бұрын
Mathematics was discovered - the method of understanding mathematics was invented.
@MediumDSpeaks3 жыл бұрын
I have been saying this question to people my whole life. I never knew it was an actual thing people like Dr. Penrose studied! I always thought discovered, just our units to describe things are "invented" but also based on discovered properties of reality as well.
@vhawk1951kl2 жыл бұрын
"Reality"? Whose reality? If you experience pain or anything else that-for you, cannot be different, that is as real as real can be for you, but nobody else, thus whose reality? o you suppose there to be a " reality"(whatever that means) other than the direct immediate personal experience of some particular being?-Some sort of vague generalised " reality"? Whence you get that strange idea?
@MediumDSpeaks2 жыл бұрын
@@vhawk1951kl go away year 2 philosophy study
@quixodian4 жыл бұрын
I noticed Robert Lawrence Kuhn's repeated invocation of the idea that mathematics must be 'out there'. It seems 'out there' is his criterion for 'what really exists'. But the point about mathematics, is that it transcends space and time - it's not 'out there', it's true by virtue of inherent reason. The intellect's grasp of the transcendental nature of intelligible reality is fundamental to traditional platonist philosophy, but has been squeezed out of Western thought due to the influence of nominalism and, later, naturalism. Thank heavens there are some leading scientists such as Sir Roger who are fighting the good fight.
@walterevans21184 жыл бұрын
Very interesting....I think that materialism of people like Hobbes thought itself to have transcended Platonist philosophy but in the exploration of Quantum Mechanics its re-emergence was necessitated .....Heisenberg realized that visual pictures from the macroscopic world were NOT adequate to describe the sub atomic domain...To do that accurately you have to go into pure mathematics like Roger is describing....I guess mathematics could be seen as transcending time & space because it is an abstraction which is not a physical object that can only exist in time and space...But it IS an abstraction which pre-exists......In a way Heisenberg was using Platonism to go beyond not just Hobbes materialism but also Descartes.
@quixodian4 жыл бұрын
@@walterevans2118 Google 'The Debate between Plato and Democritus' - a speech Heisenberg gave late in life. His Physics and Philosophy is also good. (It's a canonical text of the Copenhagen Interpretation.) The point about mathematics is that it's not simply 'abstract' insofar as it is also predictive. Many of the seminal discoveries of qm came out of the analysis of mathematical symmetries the gold standard being Dirac's discovery, or rather prediction, of anti-matter. Another example is Eugene Wigner whose Nobel Prize was for application of symmetries to nuclear physics. Wigner penned a famous essay on the unreasonable effectiveness of maths in the natural sciences. Plato will have the last laugh.
@walterevans21184 жыл бұрын
Jonathan Shearman...Yes, I've got Heisenberg's Physics & Philosophy. A great book particularly in the way he explored all the different objections to the Copenhagen interpretation...Yes, even if with the measurement problem of electrons we cannot have mathematical certitude between momentum & position in observations mathematics has an incredible predictive power in the physical world...This has led some to call it a useful tool which is invented but it also predicts THEORY.. I think Penrose is correct when he says calling it an invention doesn't really go far enough to explain mathematics ....& Heisenberg would have agreed with him otherwise he would not have developed his matrix Mechanics . In Athens in 1964 he explored these ideas about patterns in our minds called 'architypes' by Plato might have reflected the internal structure of the world.
After combing through and scanning over all these provocative vid titles, I think I've found the equivalents of gold here on this channel. I'm about to binge all of this.
@jackmermigas94652 жыл бұрын
What a glorious conversation! In regards to a simple equation being responsible for producing the mandlebrot set, I wonder what sort of equations are involved in producing the seemingly impossible visual shapes we can witness in a DMT breakthrough.
@serioussrs93492 жыл бұрын
wow!
@trybunt2 жыл бұрын
I think DMT experiences are more accurately described as "unexplainable" or "incomprehensible" rather than impossible. They can certainly be described as beneficial imo
@THEMAX000002 жыл бұрын
There’s always one, lol
@SEAIRA2007 Жыл бұрын
Sacred geometry ; I’m no expert but there is def a link w mathematics ❤
@jobebrian4 жыл бұрын
For what it’s worth, the word “invention” is derived from the Latin “invenire”, which means “to come upon, to find”, which is somewhat close to “discover”. The word “discover” is derived from “discoopeire”: dis (same as the English “dis”, also like “un”) and coopeire (cover). So the meaning associated with the terms is somewhat muddled. I don’t suggest that the etymologies invalidate the meaning we have now, but that maybe the concepts aren’t quite as opposed as ordinary language infers. After all, nobody claims that an invention such as the lightbulb was created out of nothing. It was invented on the basis of previous ‘discoveries’ (electricity) and ‘inventions’ (glass, filaments, whatever). But-conceptually speaking-is bringing light to what used to be dark all that different than the solution for Fermat’s Last Theorem? I wonder.
@nqobilengema21654 жыл бұрын
So all in all... Its all perceptive. Like anything in life... And context also
@omairbinenam63374 жыл бұрын
discovering = surprise or a fluke. inventing = planning and a definite road map
@omairbinenam63374 жыл бұрын
one might say that the lightbulb was invented after countless discoveries.
@chazzabh4 жыл бұрын
The point is to ask 'Did we simply make maths up and use the maths that fits our reality because otherwise it's no use?' or rather 'Was/is maths 'out there' somewhere in an abstract space and we stumbled on it?'
@peytonquinn30954 жыл бұрын
@@omairbinenam6337 Yes and after more experiments and discoveries the Newtonian based light bulb is replaced with a Quantum based device, the LED (light Emitting Diode)
@davidfarrall2 жыл бұрын
This is thrilling and fascinating to me, Sir Roger. The confluence of All Mathematics and All Physics is so beautiful and allows us to go deeper into the Reality and Truth of our Universe. And We, most probably, will never find a total solution. But the Theoreticians can dovetail with the Engineers, Scientists, Explorers, Practical People, etc. We can look forward to a testing and interesting future based on your thinking and your Associates and Colleagues. Thank you for your (summary) talk on this.
@bryandraughn98302 жыл бұрын
I'm amazed when mathematical ideas uncover things about reality that wouldn't have occurred to us if we hadn't been calculating a bunch of weird ideas. Sometimes it literally points the way.
@rgoodwinau2 жыл бұрын
What a wonderful, flowing and enlightening interaction between these two men, on such a deep subject, without resorting to gobbledygook! Thankyou.
@Rayji104 жыл бұрын
For me mathematics is one of the most beautiful ways of describing the universe in a way that can be both complex and simple at the same time.
@emmanuelstamatakis17102 жыл бұрын
How do you know that?
@AccendoWorld2 жыл бұрын
It’s very fascinating, the idea that the physical and non-physical worlds operate independently - yet, work or interact between each other transactionally.
@johnevans63994 жыл бұрын
What I think is fascinating is how often maths departments have musicians trying to break free! 🤔
@STaSHZILLA4202 жыл бұрын
Roger Penrose is, by far, my most favorite scientist. Everything this man says is top-notch.
@vhawk1951kl2 жыл бұрын
Really; what do you suppose he knows?
@IDMYM82 жыл бұрын
Yes tell us
@trybunt2 жыл бұрын
I really like his idea of Conformal Cyclical Cosmology. The idea that far in the future, only black holes will exist, and after trillions of years they will dissipate into light. When only light exists, which doesn't experience time, the size of the universe will be inconsequential. It could be described as a vast cold state. Or it could be described as a hot dense state... just like our best understanding of what our universe was like 13 billion years ago. No idea if it's true, but it makes sense to me.
@willymack56773 жыл бұрын
I think in a sense, it is both. The language of mathematics that we use was certainly created by humans as a tool to easily describe and communicate to each other just how these principles exist within the fabric of the universe.
@vhawk1951kl2 жыл бұрын
Help me with this please: What is bread in the "language" of mathematics? Or what is "universe" in that language"?
@AdelaideBen12 жыл бұрын
We use both - the act of discovery, and the act of intuition based on insight (whether or not is a universal truth). The problem is when people say that Mathematics isn't discovered also is a cop-out... it suggests that all the answers are there, you just need to (hijacking a gamer term) "git gud". It actually undervalues the cognitive effort to progress maths, as it suggests the limits are only ourselves. I believe the advances are because of ourselves - not that we're holding things back. Yes - it's a mater of perspective. However, I don't see much inspiration in telling people their deficiencies are what's defeating humanity. Also, unlike most other "sciences" mathematics has intentionally ignored any discussion of ethics... and that worries me, as many an evil has been progressed based on the belief that ethics didn't apply. I am not saying it exists - but I think that there needs to still be a discussion within the mathematics community as to what is ethical mathematics (beyond how maths is misused to influence stock prices).
@Mageblood2 жыл бұрын
@@vhawk1951kl B R E A D= 13 12 3 4 D
@cheminem2 жыл бұрын
@@AdelaideBen1 it is actually refreshing to me that mathematics is divorced of the normative. However, there are many instances where it is, e.g. decision theory, how the rational man ought to make decisions. I don't think mathematicians are interested in the ethics of their discoveries for the most part, because a lot of modern mathematics are difficult to apply readily. Mathematics with respect to the stock market is also extremely complicated, but the manipulation of it is straightforward, e.g. arbitrage. If anything, I think it's the reverse, not understanding the mathematics behind such actions is what allows such morality to decay. When leverage was 20:1 prior to the 2008 financial crisis, Its taken that a lot of the people piling that machine did not know of the consequences, they simply knew that they got paid very well to give people mortgages, to over leverage themselves on CDO's, etc.
@judemorales4U2 жыл бұрын
I agree William. I think math existed universally and intrinsically (such as sacred geometry) but that man created 'the use' and methods of counting, tracking, measuring and so on.
@XMachete2 жыл бұрын
Ahead of watching this, presuming the question isn't misleading, I will guess that the mathematical properties of the natural laws governing this universe is what we discover, and what we invent are systems for expressing them and leveraging what we've discovered both in practical application and also in the pursuit of new discoveries. Now to watch the video and learn how muddled my guess was.
@jordanious77112 жыл бұрын
Yeah, boiled down to it's most basic premise, math is just seeing a cup and thinking "thats 1 cup" then if you add another cup you now have 2 cups. It doesnt matter how you explain that, the concept will always be the same. You can have "1" or you can have a trillion lots of "1".. it just is that way, how we describe that is irrelevant... Any intelligent life would be forced to make the same observations eventually. All of math is based on these very simple foundations. In that sense we aren't really creating anything, just trying to understand what reality has already given us.
@dunzek9432 жыл бұрын
Agreed. I don't think it's muddled. Why math isn't a discovery I'd say is because mathematics is literally invented. It isn't a scientific discovery; it's a field and practice built on supposed axioms that have turned out to be very useful. These axioms developed throughout the course of human history, but started in a humble manner (counting: one deer, two deers, etc.). How these axioms were conceived were primitive and so primitive and subconscious that perhaps it's treated as a natural part of the world discovered. People are mistaken to treat mathematics and the phenomena that it describes well in the physical world the same.
@jthomasjohnson4 жыл бұрын
Mathematics is the scaffolding onto which material reality is affixed.
@mathematicalninja27564 жыл бұрын
Flash Fordon why not?
@pelimies18183 жыл бұрын
In Civilization, math was discovered. Special thanks to Sid Meier for his lifetime work and all the masterpieces we enjoy (there is a lot)!
@WeBbillionairz2 жыл бұрын
In Civilization, math was *recognized
@pelimies18182 жыл бұрын
@@WeBbillionairz You always press like to your own comments? smirk
@Aurora20972 жыл бұрын
Yeah, civilization invented mathematics and Sid Meier invented cililization! Who 7nvented sid meier?
@numbersix94682 жыл бұрын
@@Aurora2097 i think it was Beverly, who really doesnt get enough credit
@vhawk1951kl2 жыл бұрын
If you please, what exactly do you mean by maths or math if you insist?
@loschekell3 жыл бұрын
"Mathematics" is a human contrivance used to describe change and motion. We can't be sure it's accurate over remotely vast distances and time scales. The ancient Greeks pondered this question.
@risej41643 жыл бұрын
The Greeks pondered on what “Egyptians” mastered!
@2121beastmode3 жыл бұрын
@@risej4164 so are many alive today. Whats your point?
@risej41643 жыл бұрын
@@2121beastmode the fact that you don’t know, is beyond me!
@theheebs1003 жыл бұрын
really? because we've used math to put telescopes floating around the Earth and use them to take pictures of galaxy's billions of light years away. that seems like a pretty vast scale where our math works to me.
@risej41643 жыл бұрын
@@theheebs100 lol… that’s bs, and if you believe that then u r a straight clown… I think you really are one though!
@ciesinsk Жыл бұрын
I am so thankful for being smart enough to appreciate how very very very smart Penrose is.
@phmwu73684 жыл бұрын
I really like those wooden chairs !
@andyalder79104 жыл бұрын
Wish they'd oiled them though.
@toddwitheril4734 жыл бұрын
That library is crazy cool.
@bigboy61914 жыл бұрын
Who notices chairs
@phmwu73684 жыл бұрын
@@bigboy6191 Consider the World like a car, some only notice the color, others know about its engine, interior, handling, mechanics, design, history, characteristics, etc...
@jamesbentonticer47064 жыл бұрын
@@bigboy6191 I did, I like them too.
@MatadorMedia2 жыл бұрын
Mathematics is a language which operates the same as any other. It formed out of natural phenomena that humans then manipulated into a format they could understand and explain. Everything socially constructed has a natural base.
@Chronz2 жыл бұрын
Yeah, weren't we just trying to quantify things in our daily life, only to later find just how intricate it all is
@markmooroolbark2522 жыл бұрын
So it's all just a crazy coincidence that we clever apes stumbled upon a language which unlocked the mysteries of the universe and has enabled us to know how and when this universe came into being and how and when it will end?
@anonanon46862 жыл бұрын
So you're saying that gender has roots in the natural world.. Goddam it, the spectrum is in danger then.
@molybdaenmornell123hopp52 жыл бұрын
I have a problem with one notion suggested here: that we can or should quantify the accuracy of mathematics itself by how well the equations we've so far come up with model observable reality. If an equation, say the ideal gas law, pV = nRT, imperfectly predicts the volume of an amout gas at some given pressure or temperature, that is because the mathematical model applied doesn't exactly reflect the physical facts, not because 2+2 is not exactly 4. The answer is to make a better model, not to somehow tweak arithmetical results. No physical discovery needs to call into question the axioms and theorems of maths, only their usefulness. 2+2 can remain 4, whether or not there's a world to apply that to.
@alexlaverick61112 жыл бұрын
Today. Two plus two equals five. Correct?
@lookupverazhou85992 жыл бұрын
@@alexlaverick6111 That would imply that 1 + 1 equals 2 and 3 simultaneously, which cannot be axiomatically. Thus, disproven by counterexample.
@lookupverazhou85992 жыл бұрын
That comes down to whether there really is such a thing as "1", and not just the appearance of "1". That is to say, in it's application to reality.
@Shootskas2 жыл бұрын
"No physical discovery needs to call into question the axioms and theorems of maths." And yet there are mathematical systems that have applications in physical systems that do exactly that.
@Trentstone1212 жыл бұрын
"keep your mind open to the possibility that 2+2 does not equal 4" -Jubal Harshaw.
@rayraycthree5784 Жыл бұрын
As an EE, it is amazing how electrical parameters are so related in straight forward equations and that many of the constants that bind the equations also work well in other disciplines. The only thing that the math doesn't seem to fit very nicely is that a number of the constants are irrational numbers.
@AethericTheorem8 ай бұрын
You should definitely checkout Eric Dollard’s books lectures... One of the most authoritative EEs alive & in the public domain.
@zenbum26544 жыл бұрын
It was hinted at in this video, but Penrose considers himself a Platonic Idealist, in the traditional sense of that term. Most philosophers nowadays consider such notions silly and quaint, but Penrose makes a very compelling defense of it in his books. Everyone would agree, however, that Penrose is a brilliant mathematician; I would argue that he's also a pretty damn good philosopher.
@dennisalwine45194 жыл бұрын
Yes! I found that very interesting, almost Pythagorean! I think in your statement is the argument summed nicely. Remember it was the pre-Socratic Pythagoras who indicated the right triangle *is* a2 + b2 = c2, while a drawing of the right triangle is the approximation-who needs Plato here :-) . I'm inclined to say there are things we describe as right triangles in nature (such as the relationship among reactance, resistance, and impedance in electricity), in which Pythagoras has made a mathematical approximation of the reality. And I assert it remains an approximation, despite claims of relative accuracy. There is still room for idealism here, though!
@marcosgalvao31824 жыл бұрын
Yes , hes very bright.
@Google_Censored_Commenter4 жыл бұрын
He's an awful philosopher. Platonic idealism is archaic. Idk why he would even attempt to defend that position. It's been well-established maths is just language, nothing more, nothing less.
@marcosgalvao31824 жыл бұрын
@@Google_Censored_Commenter all language have semantics structure, it means the universe have a mathematical structure.
@Google_Censored_Commenter4 жыл бұрын
@@marcosgalvao3182 It means humans invented a mathematical structure that (currently) applies to our universe. And said structure is just labels, nothing else.
@WideAwakeHuman3 жыл бұрын
Mathematics is "discovered" just like words are discovered to describe things we observe only with much more precision... The facts, physics and reality are there, math is just a way we come up with to describe how it works
@Mikerc912 жыл бұрын
Better than the video
@Young-ep8ik2 жыл бұрын
what you think of is language, a human invention. math is nothing like that. if aliens were to question how universe works, they would come to the same conclusion as human beings even if these civilizations never meet each other. Hell math would be the exactly same in a parallel physical world with different physical parameters. thats why penrose was talking about math as a foundamental reality independent from this world.
@geordan67402 жыл бұрын
But with language you cant predict the name of any new object. With math you can make predictions about the universe.
@connor42162 жыл бұрын
@@Young-ep8ik language also is a way to describe reality though.I also think it’d be a mistake to say that the conclusions that we get from math about how the universe works would be the same found by aliens or from us in the future. There will always be new theories and ways to describe the world that are better than old ones.
@Young-ep8ik2 жыл бұрын
@@connor4216 Agree with the first statement because math is in itself a language of relations and logic that applies to anything in the physical world or abstract entities. You are right different civilizations will find ways to discover subsets of reality in different order. But 1+1 cannot be 3 to any observer in any timeline. What you refer to in the last sentence applies more to physics or other empirical sciences. Math theories are generally absolute because they require well, mathematical proof. It’s impossible that whats proved in the past is false in the future
@valkonrad4 жыл бұрын
Mind blowing as usual, but greatly helped by Prof Penrose’s precision and clarity. Maybe there are also platonic worlds of logic, music and morality, equally fascinating.
@parkergiele4 жыл бұрын
I’ve come to realise over time that mathematics is actually quite spiritual
@AdelaideBen12 жыл бұрын
Maybe you should read Greek philosophy... the Platonic world was one of concepts and an underlying ideal "reality"- whereas reality was only a shadow-puppetry of the Ideal. The problem I have with this view is that it suggests that mathematics has been advanced without the need of physical evidence, and also that pure mathematics has meaning outside of the physical world. There's been a lot of mis-steps in mathmatics (same as in physics). That's the scientific method... propose something, test it, re-assess it. Plato lived in a time when there were huge advances in logic/mathematics - when the limitations of experimentation prohibited as many advances. Of course mathematics is infinitely precise - but as there was a transition from Newtonian to Relativistic theories, these were necessitated from the inability of the theory to explain reality. If Newtonian physics was able to account for all physical interactions, would anyone care about Relativity? We appreciate the need for different maths to better understand the reality we live in. Sometimes the Maths comes earlier - but it's relevance comes when it intersects with the real world. I'm really in favour of a discussion on the world of Ideas - but I also know that Penrose also uses a lot of methods to undermine non-physics/mathematics discourse, which is problematic (when it comes to things such as consciousness). I'm an aetheist - so I don't mind the lack of a watchmaker... but as a physicist I also fundamentally object to the idea that you need to resort to such things as quantum effects to argue consciousness (as randomness is a feature that is built into complex physical systems). His concept is to replace God with the Wizard of Oz (hidden behind an veil of uncertainty). This is intellectual commercialism.
@ursulagwozdz19552 жыл бұрын
@@AdelaideBen1 maths exists apart, in its own right, without our understanding of it.As long as there is space and time, there is maths.In pure maths there is validation through the existence of space alone.
@AdelaideBen12 жыл бұрын
@@ursulagwozdz1955 Er... I think you misunderstand where maths exists and where physics exists. Maths has no concept of "space" - it has the concept of 1D/2D/3D/4D.... etc n-dimensional coordinate systems. It says nothing about what "space" (the physical reality) means. Pure Maths has an important role in Physics - a crucial role - but Pure Maths doesn't need Physics, or ANY realworld anchor. That's why there is no branch of "Pure Physics" - but there is a Maths that is purely about the abstract. Much of Physics exists in the abstract - and much of reality can also be abstracted - but there's a real difference in physics and pure maths. Also Pure Maths has no intrinsic concept of "time"... it has an abstracted dimensional concept, and you can extend this to a statistical concept which says it's more likely to move towards disorder than order, but there is no "pure math concept" of time AFAIK (maybe there is in which case I'd love to hear it).
@ursulagwozdz19552 жыл бұрын
@@AdelaideBen1 maths and physics are intrinsically linked.We agree on that.
@devon_lettuce_tomato86378 ай бұрын
Always had this question but never was able to word it so simple and comprehendible.
@milkmanswife936964 жыл бұрын
this was great. so thrilled to think how much more of mathematics might be understood to in fact relate to reality as we experience it, and possibly unite physics and metaphysics.
@TheBillNye3 жыл бұрын
I’ve always believed that math exists and we do our best to bring it into understanding. I think a few examples for this are with Pi or e. These irrational numbers exist because it’s the math that is already there but we are trying to impose it onto a number system we created.
@StonerSteve973 жыл бұрын
Exactly, 2 apples are still 2 apples. Regardless of how you define it with language.
@MansMan420693 жыл бұрын
@@StonerSteve97 And 2 would still be 2, with or without apples.
@Reno_Slim3 жыл бұрын
According to the Stanford Encyclopedia of Philosophy, mathematics is a language. Languages are created...not a discovered natural phenomenon.
@webtheweb3 жыл бұрын
So just say discovered....
@realtruenorth3 жыл бұрын
@@webtheweb LOL,,
@mycommentpwnz4 жыл бұрын
The fundamental truths of mathematics are clearly discovered, and we subsequently INVENT a language to describe the observations.
@edwardlewis19638 ай бұрын
Mathematics is discovered. The language we use to represent mathematics, is invented.
@aevoguitars25764 жыл бұрын
I actually thought about this question a few months back
@jrousselle78282 жыл бұрын
Roger Penrose is amazing. He makes the complicated seems so simple. Einstein had the same ability. Roger's brother (Jonathan) was a chess grandmaster. Good genes, I guess.
@simonasfaw94502 жыл бұрын
Do I sense an eugenics argument here 👀... Lol sry I had to cr*p on your comment but I had an argument with a math fanatic about this very topic of "is math made up or sown in the fabric of reality"... And he wasn't nice about it ☹️
@bumbo95062 жыл бұрын
More like amazing parents and environment. Geniuses don’t appear magically in a bottle.
@simonasfaw94502 жыл бұрын
@@bumbo9506 yes and genes don't get to be expressed if not under the right condition... We usually do not use all of our genetic code... Sometimes it needs a trigger to be expressed... IDK I saw it on BBC
@jararacavoadora58682 жыл бұрын
Well fenotype is produced by environmental externa factors + genetics
@marklammas24652 жыл бұрын
An early chessboard helps the good genes. For Roger an early something else kicked him off.
@Vmvmvmvmvn4 жыл бұрын
My teacher once said that mathematics is the most human of the sciences.
@jainutkarsh944 жыл бұрын
your teacher was a teacher in a real sense
@En-of5oh9 ай бұрын
Really, some wonderful peopl add to our knowledge and notions and make this world wonderful. How we can know such notions without such a mathematician. Amazing.
@poshko413 жыл бұрын
I would love to spend an hour a day for a year receiving private math tutoring from this guy to see how far I could evolve from a complete math doofus.
@BASH_ANGEL2 жыл бұрын
Keep dreaming! You can't afford him
@shaunie123454 жыл бұрын
PENROSE: *states large number INTERVIEWER: Woah
@frankhodgson78844 жыл бұрын
“If words are not things, or maps are not the actual territory, then, obviously, the only possible link between the objective world and the linguistic world is found in structure, and structure alone.” ― Alfred Korzybski
@DavidGarcia-kw4sf4 жыл бұрын
A concept is a mental integration of two or more units which are isolated by a process of abstraction and united by a specific definition. By organizing his perceptual material into concepts, and his concepts into wider and still wider concepts, man is able to grasp and retain, to identify and integrate an unlimited amount of knowledge, a knowledge extending beyond the immediate concretes of any given, immediate moment. --- Ayn Rand
@pierrestober34234 жыл бұрын
I like quotes. Someone did the hard thinking and crafted it in a simple way that is understandable for a majority of people just so I don't have to. Nice!
@DavidGarcia-kw4sf4 жыл бұрын
@ravioliandsalsiccia Rubbish
@DavidGarcia-kw4sf4 жыл бұрын
@ravioliandsalsiccia With all due respect you have no idea what you're talking about. She actually was an atheist; a point with which I disagree by the way. In fact, I would argue that she got a number of things wrong. But that does not diminish the things she got right. I suggest you actually read some of her stuff to avoid making further factual errors. Pretending to know about something when you clearly have not done your homework does not make for a convincing argument.
@DavidGarcia-kw4sf4 жыл бұрын
@ravioliandsalsiccia As I said, it's clear you have not actually read her work and therefore are not qualified to comment.
@Kivas_Fajo Жыл бұрын
Isn't that like Michelangelo's answer to the question, how he could make such beautiful statues, which was: "I didn't do anything special. The statue was inside the block all along. All I had to do was to chip off the unnecessary pieces."
@gr6377 ай бұрын
Exactly. Which is obviously incorrect.
@piggypiggypig17464 жыл бұрын
Whenever this question is raised, I'm always reminded of the Cicada ( periodicals ) which have evolved to emerge from their underground lairs every 13 or 17 years, a strategy adopted to eliminate the possibility of potential predators receiving periodic population boosts by synchronizing their own generations to divisors of the cicada emergence period.
@robotaholic4 жыл бұрын
Why do you always think of the the emergence of Cicada when someone brings up the question of whether math is invented or discovered?
@piggypiggypig17464 жыл бұрын
@@robotaholic The Cicada will only emerge after 7, 13 or 17 years. These are all prime numbers. If the cicada emerged every 12 years for example, then the predators that come out every two years will attack them, and so will the predators that come out every 3 years, 4 years and 6 years. It seems that humans are not the only ones to have discovered primes.
@ShawarMoni4 жыл бұрын
@@piggypiggypig1746 we also have the most sophisticated "computer" between our ears, does it mean i "discovered" quantum computing? 🤔
@rossmcleod79834 жыл бұрын
piggypiggy pig when I heard about that cicada emergence rhythm I too never forgot it. Extraordinary stuff.
@alexbowman75824 жыл бұрын
On the equinox late at night I witnessed many frogs along the cycle path of a Glasgow canal moving to the water presumably to avoid predators by numbers.
@mrlarrghi4 жыл бұрын
In the known universe nothing is created or invented by man, but something is just discovered. "Science is the attempt to explain in form of concepts everything that has already been built." (Einstein)
@eue41274 жыл бұрын
I disagree with that! Your quote neither proves nor disproves your point. Based on it, science still could be an invention by mankind which fits the universe to a very high accuracy. Of course there is no certain answer to this rather philosophical question but I don't think something as our universe, which is so much greater than us humans, evolved to be exactly described by formulas consisting of letters and numbers...
@gmccord19703 жыл бұрын
I am a high school mathematics teacher and I posed this question to my incoming freshman class on whether mathematics was invented or discovered along with an experiment. Now here I am on KZbin and I found a video asking the same question I did . Awesome!
@ezramallon39783 жыл бұрын
I'm a high school English teacher and I was posing this very question to my Mathematics department friends last week!
@MohammadAliKhalil3 жыл бұрын
So what’s the answer? Please don’t say invented 🙄
@gmccord19703 жыл бұрын
@@MohammadAliKhalil As my father would say, God gave us the first 10 digits, the devil gave us 0 and everything else was invented. Lol but seriously... I like to think of mathematics as a system invented by man to explain the laws of nature that already existed. So basically it's both!
@krioni86sa3 жыл бұрын
There is no god
@gmccord19703 жыл бұрын
@@krioni86sa There isn’t any God. Stop being ignorant.
@AlexanderLayko3 ай бұрын
In the whole debate of whether math is invented or discovered. Why stop at math? Is ANYTHING invented or discovered? Is a painting invented or discovered. Is a song?
@el34glo593 жыл бұрын
Gonna be sad when we lose him. He's one of thr very few open minded brilliant minds out there, that's also respected and listened too.
@ryanflynn68192 жыл бұрын
happy that we have had him 😀
@josephgreen28242 жыл бұрын
Everybody dies eventually so why lament the inevitable
@lookupverazhou85992 жыл бұрын
Why not just enjoy the moment and stop regretting the future.
@nfltrrrqwsa75122 жыл бұрын
people that are not open minded and brilliant by someone's standard should not make anyone sad when they're gone
@lookupverazhou85992 жыл бұрын
@@nfltrrrqwsa7512 No sense make much?
@Playitalready4 жыл бұрын
All significant maths was already known and taught long ago in the Vedas. It was called Ganit. For example, the concept of zero was originally called Shunya, or zero void. The symbol of zero and the decimal system was described in the Vedas (for example Atharva-Veda 5.15, 1-11) and also described is how the number increases by 10 by writing zero in front of it. The first usage of Pi also came from Vedic teachings. A (e.g. Rig-Veda 1.105.17) formula to find the area of a circle is mentioned showing that the Rishis knew of pi, approximating it to be equal to 22/7. The word Bijaganitam means “the other mathematics” and was given to math like, for example, what we call algebraic forms of computation. Eventually another notation that people called “Indian numerals” evolved from the Brahmi numerals and assumed common use. But under the dictatorship of Mohammad in the 7th/8th centuries, Arabs invaded and conquered the land from India, across northern Africa, to Spain. Most of these Vedic texts originated and remained in India and so, in the following centuries (through the 14th) the Arabs destroyed many texts. But since they pursued some arts and sciences, they came across some of this math and change some names. For example, they coined the term Algebra when it came into common use throughout the Arabian empire, which extended from India to Spain. Europeans later used the name "Arabic notations," because they got them from the Arabians. However, the Arabians called them Hindu figures (Al-Arqan-Al-Hindu) and they referred to math itself as Hindi-sat. Vedas are misunderstood, but are the source of all knowledge. watch my current main vid/description on my channel, n click my sub/bell icons for a few epic, upcoming vids, offering details/evidence on all the above, & much more.
@kingplunger14 жыл бұрын
no, I mean seriously. make a universal statement and then start with: for example...
@tonyfrank90994 жыл бұрын
@@kingplunger1 stop being lazy, you gat a great mind train it up to process and hold large data/ information
@volkhen04 жыл бұрын
Math is the language of abstraction of our minds. Some Math can have no sense in real world but if it’s consistent and derived from simple logic then it’s invented. If it describes physical world then it’s discovered as it is just another layer of reality. Obviously math can jump from invented to discovered category when we discovered that this branch of mathematics have real world meaning after all.
@notwhatiwasraised2b4 жыл бұрын
ALL math does is imperfectly describe our observations of relationships between things. Nothing is being 'discovered' by these descriptions.
@pritch4812 жыл бұрын
He's also such a nice person (it seems). Example, at about 15:15, "It's a bit hard to explain that one too".
@peterharris91053 жыл бұрын
Einstein described himself as “standing on the shoulders of giants” (read Newton, et al). Penrose respects and understands, as well as standing himself on the shoulders of his predecessors.
@tomthomassony86073 жыл бұрын
And the first people 50,000 years ago, drawing squares and circles in the dirt with a broken stick.
@Conorp773 жыл бұрын
It was Newton who said this, not Einstein. In Britain, it's written on the sides of our pound coins.
@Ukrainewinnerrrr3 жыл бұрын
No its not true it was Sir Isaac Newton who said that
@J..P..2 жыл бұрын
That would be quite rich coming from a known plagiarist like Einstein.
@courrierdebois4 жыл бұрын
Key words: "reality as we understand it." Mathematics and the language of words are both the response of the brains registration of sensation. We invent a system of description and call it inherent to the described.
@storerestore4 жыл бұрын
Mathematics is not just a system of description, it's the abstract concepts it describes as well. Mathematics in that sense is indeed inherent to what it describes. While it has proven a useful tool in modeling the world around us, it really isn't concerned with the physical reality. In that sense I think the comparison to the language of words is misguided, because natural language is a tool to describe sensation and experience, and mathematics is not.
@DensityMatrix14 жыл бұрын
Agreed. Many scientists are totally captured by the materialist model of reality. The notion that all we know is experiential and from sensation is lost.
@JoaoVictor-ok3br4 жыл бұрын
@@storerestore Mathematics is inherent to mathematical concepts and relations? Well, yes, but everything is inherent to itself, doesn't make it's existence separate from human consciousness and neither differs from what the first guy said, we did create it to talk about the physical world. Moreover language isn't just a tool to describe experiences and sensations the proof is that we can talk about abstract concepts, but it still is a human invention.
@rajinderatwal35254 жыл бұрын
Development of mathematical language needs to make some assumptions such as to prove a theorem or certain derivative equations to arrive at proper answers.
@munna_bhai_bsms4 жыл бұрын
Well , I think that every piece of mathematics is relevant to our physical world . It is just that we have not developed our experience of physical world enough to even think that his piece of mathematics is relevant to the physical world . for example, ramanujan in his deathbed wrote some new functions which were irrelevant for the physical world , but later in 20 th century , physicists say that these functions can be used to describe some properties of black hole . WHAT IS YOUR OPINION ON THIS ?
@AndyJarman4 жыл бұрын
Patterns we discern often repeat - this is not an insight into the nature of reality though. Just an indication of how limited our vocabulary of ideas and understanding are.
@johnmagelus68954 жыл бұрын
Plausibel we don't have the answer but one thing is syre history trapets.
@user-mj2ro8md8p2 жыл бұрын
I read a quote from somewhere that said “if you could erase all science and religion from humanity right now, both would return, but only one would be exactly the same”. That’s not a knock on religion in my opinion, but truth that math and science is constant and unaltered, it is our minds that altered to understand it…evolved to understand it.