The Secret of Synchronization

  Näkymät 6,259,371

Veritasium

Veritasium

17 päivää sitten

How does order spontaneously arise out of chaos? This video is sponsored by Kiwico - go to www.kiwico.com/Veritasium50 for 50% off your first month of any crate.
An enormous thanks to Prof. Steven Strogatz - this video would not have been possible without him. Much of the script-writing was inspired and informed by his wonderful book Sync, and his 2004 TED talk. He is a giant in this field, and has literally written the book on chaos, complexity, and synchronization. It was hard to find a paper in this field that Steven (or one of his students) didn't contribute to. His Podcast "The Joy of X" is wonderful - please listen and subscribe wherever you get your podcasts www.quantamagazine.org/tag/the-joy-of-x
Nicky Case's Amazing Firefly Interactive - ncase.me/fireflies
Great Kuramoto Model Interactive - www.complexity-explorables.org/explorables/ride-my-kuramotocycle
References:
Strogatz, S. H. (2012). Sync: How order emerges from chaos in the universe, nature, and daily life. Hachette UK. - ve42.co/Sync
Strogatz, S. H. (2000). From Kuramoto to Crawford: exploring the onset of synchronization in populations of coupled oscillators. Physica D: Nonlinear Phenomena, 143(1-4), 1-20. - ve42.co/Strogatz2000
Goldsztein, G. H., Nadeau, A. N., & Strogatz, S. H. (2021). Synchronization of clocks and metronomes: A perturbation analysis based on multiple timescales. Chaos: An Interdisciplinary Journal of Nonlinear Science, 31(2), 023109. - ve42.co/Goldsztein
The Broughton Suspension Bridge and the Resonance Disaster - ve42.co/Broughton
Bennett, M., Schatz, M. F., Rockwood, H., & Wiesenfeld, K. (2002). Huygens's clocks. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 458(2019), 563-579. - ve42.co/Bennett2002
Pantaleone, J. (2002). Synchronization of metronomes. American Journal of Physics, 70(10), 992-1000. - ve42.co/Pantaleone2002
Kuramoto, Y. (1975). Self-entrainment of a population of coupled non-linear oscillators. In International symposium on mathematical problems in theoretical physics (pp. 420-422). Springer, Berlin, Heidelberg. -- ve42.co/Kuramoto1975
Great video by Minute Earth about Tidal Locking and the Moon - ve42.co/MinuteEarth
Strogatz, S. H., Abrams, D. M., McRobie, A., Eckhardt, B., & Ott, E. (2005). Crowd synchrony on the Millennium Bridge. Nature, 438(7064), 43-44. - ve42.co/Strogatz2005
Zhabotinsky, A. M. (2007). Belousov-zhabotinsky reaction. Scholarpedia, 2(9), 1435. - ve42.co/Zhabotinsky2007
Flavio H Fenton et al. (2008) Cardiac arrhythmia. Scholarpedia, 3(7):1665. - ve42.co/Cardiac
Cherry, E. M., & Fenton, F. H. (2008). Visualization of spiral and scroll waves in simulated and experimental cardiac tissue. New Journal of Physics, 10(12), 125016. - ve42.co/Cherry2008
Tyson, J. J. (1994). What everyone should know about the Belousov-Zhabotinsky reaction. In Frontiers in mathematical biology (pp. 569-587). Springer, Berlin, Heidelberg. - ve42.co/Tyson1994
Winfree, A. T. (2001). The geometry of biological time (Vol. 12). Springer Science & Business Media. - ve42.co/Winfree2001
Special thanks to Patreon supporters: Mac Malkawi, Oleksii Leonov, Michael Schneider, Jim Osmun, Tyson McDowell, Ludovic Robillard, jim buckmaster, fanime96, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Lyvann Ferrusca, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Pindex, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal
Written by Derek Muller and Petr Lebedev
Animation by Fabio Albertelli and Jakub Misiek
GFX and 3D animation by Jonny Hyman
Filmed by Derek Muller and Raquel Nuno
Edited by Derek Muller
Additional video supplied by Getty Images
Thumbnail by Ignat Berbeci
More footage from NASA's Scientific Visualization Studio
100 metronome video from fipost.info/show/videot/1teu2GGYpYelZpo.html
Intro animation by Jorge Cham
Thanks for the BZ footage from SteinbockGroup: fipost.info/show/videot/rKyklKOpknyxoqY.html and
NileRed fipost.info/show/videot/r65pzoaqm2Rsqow.html
Animation of waves in the heart from The Virtual Heart/ EM Cherry/ FH Fenton - ve42.co/Cardiac and ve42.co/Cherry2008
Chemical materials and protocol provided by Mike Morris and the UCI Chemistry Outreach Program www.chem.uci.edu/~jsnowick/outreach/UCI_Outreach/index.html
Thanks to Alie Ward for title/thumbnail consultation
Thanks to Dr Juliette Becker and Dr James O'Donoghue for the planetary science help
Music from Jonny Hyman, Epidemic Sound epidemicsound.com "Seaweed" "Deeper Than The Ocean" "Ripple Effect"
Music also from Artlist artlist.com "Children of Mystery"
Thumbnail by Ignat Berbeci

Kommentteja
Adam Stock
Adam Stock 4 tuntia sitten
woop nilered
Abinash Pal
Abinash Pal 4 tuntia sitten
The big picture.
Ricardo Cortez Calderon
Ricardo Cortez Calderon 4 tuntia sitten
Esto significa que nosotros volveremos al sol? (Se volvera a juntar la tierra con el sol xd incluidos otros planetas del sistema)
Arda Ehi Ehi
Arda Ehi Ehi 5 tuntia sitten
Quality+Quantity=Veritasium
Felicia Moniq
Felicia Moniq 6 tuntia sitten
Hmm. There must be a God somewhere?
Jazeen Haral
Jazeen Haral 6 tuntia sitten
I always wondered why clapping would line up like that!! Omg. When I used to sit in chapel in high school (private Christian school) we would always end up clapping in sync. I would hear this and intentionally change my clapping, lol. I never knew this was almost a rule of nature
360 Nature Relaxation
360 Nature Relaxation 6 tuntia sitten
God.
S. Garcia
S. Garcia 7 tuntia sitten
OK Now, -- Now that my friends is how you start a morning with your cup,of tea!! - Had more of my school-age and muddle adult pedestrian observations answered in 5-minutes than any other source -ever. Yep, gonna be a good many days after this, probably decades and lifetime what's remainning after this one. . .thanks..*
Gods Squad
Gods Squad 7 tuntia sitten
God is amazing
Gods Squad
Gods Squad 7 tuntia sitten
Lightening bugs not fire flies
Abdel Rahman Khalil
Abdel Rahman Khalil 8 tuntia sitten
That is absolutely MIND BOGGLING سبحان الله
Tristam Stone
Tristam Stone 8 tuntia sitten
Veritasium, can we please agree there is no experimental proof for entropy. If entropy is proven wrong over and over experimentally, if planets form from stars and organic life cycles thru life and death, exchanging disordered matter to then reorder. If we can consume elements like minerals and via enzymes convert them in to living cells then entropy is NOT REAL. Just the same as medicine, dogma exists. Entropy I hear over and over to explain time flowing in one direction... you don't need entropy!
KReGaDeTH
KReGaDeTH 8 tuntia sitten
21 minutes to explain this? You should be ashamed.
Thule Gezelschap
Thule Gezelschap 8 tuntia sitten
In Rotterdam a big bridge nearly collapsed when there was a dance parade and people where all jumping at the same time
Livealkit
Livealkit 8 tuntia sitten
12th standard education i guess
Dominic Barden
Dominic Barden 9 tuntia sitten
Quality video!
Heyoka Empath
Heyoka Empath 9 tuntia sitten
Human was a Metronom too.
Jorge Brown
Jorge Brown 9 tuntia sitten
Reality is more fascinating than any theory. The magic attributed to the unanimated world is like a veil that prevents people to see its actual reality.And sometimes people becomes frustrated and even irritated when it is explained in simpler terms. The best example I know about it is when the great English poet Milton said Newton had removed the magic of the rainbow after Newton’s explanation of light.
Nachiketh. D
Nachiketh. D 10 tuntia sitten
0:28 . GOD
foe slow
foe slow 10 tuntia sitten
7:30 you can do better than that
koyuncusonay
koyuncusonay 10 tuntia sitten
👍🏻
Paul Binski
Paul Binski 11 tuntia sitten
So we could eliminate traffic jams by using wobbly roads? I'm pretty sure those traffic jams are the only event ignoring the laws of physics.
Freedom Of speech
Freedom Of speech 11 tuntia sitten
Ethereum
Petros_TheBot
Petros_TheBot 12 tuntia sitten
So youre telling me that there will be a point of time that the entire people on earth will say the same thing or walk or jump the same?
Marbles
Marbles 12 tuntia sitten
6:06 I can't be the only one seeing an army of marching swordsmen?
Marbles
Marbles 12 tuntia sitten
I'm surprised Huygens didn't intuit and anticipate or at least immediately understand the cause of this effect. Had he never seen how pendulums in different forms synchronize on a ship, or in a carriage, or even when you are just out walking and things hang off of you? Why would pendulums hanging from clocks be any different? O_o Maybe I'm a physics savant, who just never studied physics. Or maybe Huygens had an off day at work :P Edit: Seriously, how do people not immediately just see how this works? What causes the effect? I am starting to think I've wasted my youth in the wrong career. No need for fancy explanations. The more a pendulum moves on an angle to gravity, the more it pulls whatever it is tethered to out of place. Simple so far, right? One could delve into it, but I think most who have used a swing can intuit it. When a swing is at the top, it can pull the whole swing frame out of place. Okay... So when a swing is at the top, it transfers energy to the frame it is tethered to. The frame then shifts perpendicularly to the ground. The shifting frame will transfer energy to other pendulums attached to it. The more parallelly to the ground a pendulum is moving, the more of the energy that the beam transfers to it results in movement because the frame is moving completely parallelly to the ground. If the pendulum is moving at 45 degrees to the ground, half of the energy transferred to it will be directed towards the ground, and just result in friction. The other half will result in movement along the axis that the pendulum is moving. The frame transfers energy from pendulums moving perpendicularly to the ground to pendulums moving parallelly to the ground. The more perpendicular and parallel the motions are, the greater the effect. So energy is transferred until the pendulums are in sync. The pendulums don't even have to be influencing the frame they are attached to to sync up. It is enough that the frame is moving fairly rhythmically, like from wind or waves. Pretty sure that is by far the biggest factor for pendulums on ships, for instance. Huygens, you n00b.
id
id 12 tuntia sitten
And it relys on the fact they all are the same. If one was bigger or smaller it wouldn't work. There is a lesson here.
M T
M T 12 tuntia sitten
When you look att the the turn signal on two different cars when they have stopped due to a traffic light. These turn signals will also synchronise. How come?
Marcello Marcellini
Marcello Marcellini 14 tuntia sitten
That's not Huygens, that's Dave Mustaine.
Lawrence White
Lawrence White 14 tuntia sitten
I see turn signal lights on cars Synchronize randomly
Pantou Fos
Pantou Fos 15 tuntia sitten
The whole University has synchronicity. It has to do with the Rythm of The Spirit we are living in.
PancakePower_FTW
PancakePower_FTW 15 tuntia sitten
LMAO THIS WAS ON A STATE TEST! Thank you for making educational, yet interesting content! Pretty sure they used the same sources you did.
Hello Giddy
Hello Giddy 15 tuntia sitten
Nothing beats the ancient civilizations' innovation which last thousand years
salamanca1954
salamanca1954 15 tuntia sitten
Firefly populations in different locations around Tennessee, if memory serves, light up in waves.
Pola & Tiger
Pola & Tiger 16 tuntia sitten
The 2 clocks synchronize because it's love!
BoredJustChillin
BoredJustChillin 16 tuntia sitten
The videos are so satisfying to watch
KC Poe
KC Poe 16 tuntia sitten
We don’t really have to go back 350 years.
salamanca1954
salamanca1954 16 tuntia sitten
Humans. Don't get me started. As the herd of we primates fell into step, a perfectly reasonable way to move in a dense crowd -- Hello, army! -- they set up a dangerous resonance in the bridge structure, something the engineers had not anticipated. They should have studied human herds, amd the military, before drawing up the structure. During the American Civil War, and I imagine in all the wars of humanity whenever a pontoon bridge was laid over a body of water, the troops were instructed to break route step, and just shamble randomly over, like any crowd in a street. Resonance has long been noted for its destructive properties, (see earthquakes, wind and Galloping Gerty, the Tacoma Narrows Bridge failure) but I think, forgotten for its positive properties, both physical and mental. And for anyone who reads this and gets a redass about it, we are all primates, the alleged greatest of the great apes. Sometimes we act like that ... sometimes not so much. We contain both.
Simon Hernandez
Simon Hernandez 16 tuntia sitten
To answer 19:30; Almighty God's Word!
Vaporizers101
Vaporizers101 17 tuntia sitten
I am a scientists and this blows me away
DeRien8
DeRien8 17 tuntia sitten
So this is how we solve the "measuring unidirectional speed of light" problem? We use this principle to synchronize the clocks of the detectors
Elliott Smith
Elliott Smith 18 tuntia sitten
I went to a performance in Denmark once, and at the end people were applauding, each at their own pace but then they all went in sync and it was scary as
Gravity ERA
Gravity ERA 18 tuntia sitten
People who dislike this: n0, only chaos
Nhat nguyen
Nhat nguyen 18 tuntia sitten
Love that he puts sponsor stuff at the end of the video
giothemath
giothemath 19 tuntia sitten
Trying to remind ourselves of our cosmic existence, one day we will all meet again
Epic1 Gamer
Epic1 Gamer 19 tuntia sitten
👍
Soman Rama
Soman Rama 20 tuntia sitten
ok metronomes on a wobbly surface and light bugs. And..... the whole universe. No just no
Robert Quinn
Robert Quinn 21 tunti sitten
Inertial equilibrium.
Syphirioth
Syphirioth 21 tunti sitten
This is probably how Nikola Tesla would wanted to get his Tesla towers in sync. Earth being the wooden bar.
A. Alzate
A. Alzate 21 tunti sitten
In this age of high technology, physics still manages to mystify us. Nicola Tesla indeed was on to something when he cane up with the earthquake machine. 🕵
George Pal
George Pal 21 tunti sitten
I really liked this. But what I liked the most is that it took some simple and obvious things we take for granted, and offered some profound insight. Thank you.
J D
J D 21 tunti sitten
This is how democracy was born. The majority wins. The minority must follow afterward
Víðarr Kerr
Víðarr Kerr 21 tunti sitten
It is waves. Waves always equalize.
Guru
Guru 22 tuntia sitten
Part of this phenomenon has to be caused by the human mind though, right? Not everything is as synchronized as it appears, and we humans like finding patterns in things that don't really have patterns
Charles Macgilchrist
Charles Macgilchrist 22 tuntia sitten
It's because they're all part of the same single body that they eventually oscillate as a single body.
Tobe Vincent
Tobe Vincent 22 tuntia sitten
Brilliant, brilliant! And a quality video! Keep it up my man!
vayhn
vayhn 22 tuntia sitten
seeing veritasium's HD face after that bald guy with the bad webcam is kind of terrifying
pleappleappleap
pleappleappleap 23 tuntia sitten
Does increasing the number of metronomes increase the consistency of the timing?
silk Alter
silk Alter 23 tuntia sitten
Out of the way so amazed it's like a room full of girls when they start hanging out together they start synchronizing on their menstrual cycle that fun
SATERN
SATERN 23 tuntia sitten
This channel makes the best videos ever!!!!
Richard Shane
Richard Shane 23 tuntia sitten
nature's Natural Feedback loop seems to propagate throughout our reality created over our natural humanistic existence expressed by some who have been acute to the feedback as a religious phenomena throughout the world. Our natural pendulum of life and death is especially perceived at death of a human system while during our life time some-we are sensitive to the humanistic experience as a whole called a civilization... realized as a moral pendulum written through out written history... Peace and Love always
Boat
Boat 23 tuntia sitten
If there were 70 men marching, 60 of them fell and 20 of them were injured who were the extra 10 that were injured?
Cliente Promedio
Cliente Promedio Päivä sitten
My god... I love this channel
Ary vanHarrick
Ary vanHarrick Päivä sitten
Explanation of why the one changes motion (after 5:44)is flawed.The arrows are drawn the wrong way. The TOTAL of the two that het in sync first will balance out with the counter motion of the platform, but that don't mean that the platform doesn't move. And the move of the platform is forced by the two that are synced already. Be cause of which it dominates the one that is still doing is own thing.
Vakond Simple
Vakond Simple Päivä sitten
Synchronicity is interesting and there are more syncs... cause each spectrum(world) has an own balance...as much balance,as much syncs...so the question is which balance we choose, which sync?Thatswhy parallel waves are important,we must choose our own balance then recognize the parallels and keeping the line...if we are in higher balance we learn but we get left behind or must try more times not to get left behind...if we are in lower balance we get not our results of our works...so choosing which sync is parallel is very important...and not each sync is available everywhere...even in universe there are more balances...and there are more universes... basically we must find the parallel outside what we are already exactly inside... mostly people are choosing lower or upper nivou balance than themselves...but it's a good school in upper nivous to getting some knowledge or rolling in the deep to leaving the inner suffering behind...this channel has a good nivou.
DorGreen1
DorGreen1 Päivä sitten
2:16 the wrong acceleration on the pendulum is driving me crazy
Comrade Everclear
Comrade Everclear Päivä sitten
Nature is actually shockingly orderly. It prefers it in fact. Its why we see it everywhere and why "random chance" cannot in any fathomable sense explain our very existence.
The word
The word Päivä sitten
And as it is appointed unto men once to die, but after this the judgment: (Heb 9:27 KJV) |>~~~~~~
anand wankhade
anand wankhade Päivä sitten
hey man, i was thinking....if the synchronization works atleast with a solid connection(clocks kept on same surface or something like that) , wouldn't this solve the basic issue we had while we were trying to measure speed of light!!.....since the clocks were unable to synchronize then....we couldn't measure the speed of light in one way....but using these nomes....if we first set them up and let them synchronize over time (which they will eventually)....won't then will be able to measure speed of light in both(hence different) directions! possible or not...do let me know please!
beleafer22
beleafer22 Päivä sitten
Is this what happens when you are at a red light and watch the turn signal of the car in front of you sync with your turn signal?
Zbyszek Kopeć
Zbyszek Kopeć Päivä sitten
The Earth is flat.
Sequential Geek
Sequential Geek Päivä sitten
Wow, so like, when you live in a fake country that only enables people to hate on each other, and outsource jobs, and covers everything in asphalt, grueling traffic, and remote strip malls w/junk food, then you will end up w/people walking in a sick, twisted, 'entitled' destructive, hurtful cadence. **So saying "Oh well, that's your choice, then" is a bunk term, no?**
lennat24
lennat24 Päivä sitten
We just think it's disorder because we're too small to see the whole thing.
Trotrodor
Trotrodor Päivä sitten
no joke, this video gave me an idea for my phd ... see you at the nobel prize
Arda Ehi Ehi
Arda Ehi Ehi 5 tuntia sitten
Hey tell us your name
poiewhfopiewhf
poiewhfopiewhf 13 tuntia sitten
my name is Nut
Robert Neumann
Robert Neumann 23 tuntia sitten
tell me your name i will wait for you to appear in the news :D
Burning It
Burning It Päivä sitten
"So you naturally expect universe to be "Messi" " --mybrain
jovi_al
jovi_al Päivä sitten
Remember when you were in the school lunch room and everyone happened to finish a sentence at the same time, causing a weird silence?
Ariel Epouhe
Ariel Epouhe 7 tuntia sitten
Wait, what?
Ashish Sharma
Ashish Sharma 8 tuntia sitten
We all are metronome inside.
Reports Reports
Reports Reports 8 tuntia sitten
No, I don't
Víðarr Kerr
Víðarr Kerr 21 tunti sitten
No.
No One
No One Päivä sitten
0:30 does this solve special cases of the N-body problem?
S W
S W Päivä sitten
I wonder how the metronomes would react if they were placed on a platform resting on steel balls. And then more when the metronomes are in a circle ...
Andrew Gampal
Andrew Gampal Päivä sitten
2:20 I really thought it was the Minecraft music at first.
Boomchucks
Boomchucks Päivä sitten
1:15 good heavens! the army learned a lesson and nobody died? A Miracle!
Sam Reddig
Sam Reddig 21 tunti sitten
Well it WAS the british army.
Dodd Rougeau
Dodd Rougeau Päivä sitten
You all understand the immune system perfectly well how to diminish as many people as you possibly can, thus to reduce their immunity to Cancers and all types of fatal diseases within the herd of The unwanted, useless eaters
Dodd Rougeau
Dodd Rougeau Päivä sitten
Everyone who take civil engineering understands the World is Flat. The building of Bridges railroad tracks, and canals, confirm this.
Miguel Aguilar
Miguel Aguilar Päivä sitten
I noticed synchronization with turn signals with cars at a turning lane any explanation to that???
Máté Horváth
Máté Horváth Päivä sitten
Great video as usual! I'm from Hungary and we call that type of clapping "vastaps" seen from 9:40, in English that would be "iron clapping". Just a fun fact ;)
Scare Flare
Scare Flare Päivä sitten
The thing is energy distribution becomes equal
No One
No One Päivä sitten
15:01 Him: that's not a fart.... crap! ... 19:02 I have been sitting in my own poop to far to long now.
Morpheus848
Morpheus848 Päivä sitten
Was thinking the same lol
미카엘커트
미카엘커트 Päivä sitten
vsauce or this channel?
Herpa Derp
Herpa Derp Päivä sitten
We're with you all the way against Twitter bro.
Jostein T
Jostein T Päivä sitten
Question: do the slower ones catch up, or do the faster ones slow down? to which one do the others "fall in line" to? lets say you have 1=2bpm, 2=4bpm and 3=6bpm, which one would they sync up to?
Qam001
Qam001 Päivä sitten
Simple answer, God
KK B
KK B Päivä sitten
Not sure how true it is, but my friend once mentioned periods among group of girls tend to synchronize over time.
KK B
KK B Päivä sitten
Great Video Derek.
Jesse Gilbride
Jesse Gilbride Päivä sitten
People clapping probably doesn't count. Too much opportunity for minds to get involved. If their hearing weren't a factor, then a better argument could be made. Anyway, good video.
ToolforOffice
ToolforOffice Päivä sitten
The firefly phenomenon reminds me of how people sync their breathing with other people
Masid
Masid Päivä sitten
2:01 they just want to cross from other side of the bridge
Thai Binh
Thai Binh Päivä sitten
I and my ex talked about this. She said it's because of god's will or kind like that. I said science. Yeah, we broke up.
arshlan vh
arshlan vh Päivä sitten
This is science
Prasad B R
Prasad B R Päivä sitten
For that metronome experiment you said that it is regardless of number of metronomes. I mean that how many metronomes doesn't matter. But is it regardless of the size of platform too? I mean the relative size of metronome and platform?
Don Carmen
Don Carmen Päivä sitten
WOW
Don Carmen
Don Carmen Päivä sitten
fun with beer cans? I have a fun with 2 X 4s program. Hahaha.
This is why we can't have nice things
17:30
Veritasium
Näkymät 5 milj.
Why No One Has Measured The Speed Of Light
19:05
Latela 6.0 | Huttunen saa huutia | discovery+ Suomi
4:44
discovery plus Suomi
Näkymät 39 t.
Tilasin PS5 WISHISTÄ!! Yllätyin iloisesti!?!
19:59
Paulin Pelivideot
Näkymät 178 t.
An Incredible Sudoku Discovery
34:01
Cracking The Cryptic
Näkymät 96 t.
The Illusion Only Some People Can See
16:57
Veritasium
Näkymät 4,2 milj.
The Insane Engineering of the X-15
31:30
Real Engineering
Näkymät 1,9 milj.
Automatic pool stick vs. strangers
21:19
Stuff Made Here
Näkymät 11 milj.
This Unstoppable Robot Could Save Your Life
14:30
Veritasium
Näkymät 1,5 milj.
Is Success Luck or Hard Work?
12:04
Veritasium
Näkymät 3,6 milj.
Latela 6.0 | Huttunen saa huutia | discovery+ Suomi
4:44
discovery plus Suomi
Näkymät 39 t.
Tilasin PS5 WISHISTÄ!! Yllätyin iloisesti!?!
19:59
Paulin Pelivideot
Näkymät 178 t.
KOEAJOSSA - HONDA CIVIC TYPE-R -19 (4K)
31:22
Fia sä olet VALEHTELIJA (etkä ansaitse platformii)
17:15
Karuja löytöjä Pokemoneista | POKEDEX #4
6:29