Why (I thought) the Euro Ball being a Rhombicuboctahedron (would be) good for England.

Check out Katie's video about The Unwanted Shape. • The Unwanted Shape
Instruction to make the rhombicuboctahedron:
- Maths
- That's it.
(If it helps, I made the squares with a side length of 62mm and the triangles 102mm.)
Huge thanks to my Patreon supporters who mean I can drop what I'm doing and spend two days writing/filming/editing such a ridiculous video just because I noticed a correlation involving triangles. / standupmaths
I showed bits from these two old videos:
All UK football road signs are wrong! Join the petition for geometric change! • All UK football road s...
Geometry of Footballs and the Cube-shaped Ball • Geometry of Footballs ...
Flat vs inflated ball image from here:
commons.wikimedia.org/wiki/Fi...
The classic Platonic and Archimedean Solids animations all from wikipedia.
en.wikipedia.org/wiki/Platoni...
en.wikipedia.org/wiki/Archime...
This is the pixel-efficient cube-to-octahedron animation:commons.wikimedia.org/wiki/Fi...
Big thanks to the roughly one million screaming children who were at some far side of the park I was filming in, but somehow still made their voices heard.
CORRECTIONS
- I should have mentioned that the England women's football team reached the Euro finals in 1984 and 2009.
- Let me know if you spot any mistakes!
Filming by Matt Parker
Editing by Matt Parker
Models by Matt Parker
Graphics by Matt Parker (also, wikipedia)
Music by Howard Carter
Design by Simon Wright and Adam Robinson
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
US book: www.penguinrandomhouse.com/bo...
UK book: mathsgear.co.uk/collections/b...

[@standupmaths]

UPDATE: I watched the game and people sent in some screengrabs of the ball. It looks like the official ball only had six panels! Which means there were no rectangles on the actual game ball. But England also lost the final. So I'd like to revise my theory: since 1966 there is a 100% correlation between the ball having rectangles and England winning the final. twitter.com/standupmaths/status/1414353470585548803 A few people have said that the actual game balls might have different panels. (And it is not uncommon for the cheaper versions of championship balls to have the design printed on ‘cheaper panels’ but I’ve only seen that done on pentagons and hexagons before.) I thought I had checked the official balls. I will continue my investigations. And yes: I am both Australian (by birth) and British (by naturalisation). But am yet to adopt the England Team as my own.

[@clowen00]

Yes, I can confirm: the actual _Official Match Ball Uniforia_ is made of panels that resemble the drawings on the ball, which would make the ball an inflated cube. Disappointing :/

[@gottagowork]

So here is a question that inflated my mind. How about a tesseract? The 3D representation (of the 4D rotation) where an inner cube is connected to an outer cube. Can you theoretically "inflate" this 4D structure into a 3D football, or would it just become a shadow of itself? :D

[@erikkonstas]

@@renerpho Actually, I think you'd have to inflate like every 3D "part" of it...? Yeah I need integral...

[@Terrain239]

There was a chance to mention one more connected shape -- rhombic dodecahedron! (I thought you love that figure) The white rectangles are just inscribed in those rhombuses, also sides of rectangles are parallel to diagonals of rhombuses.

[@diogenes9242]

Added to that, the game ball for the grand final is a special edition, the "Uniforia Finale Match Ball". And yes, like the balls for the rest of the tournament, it has 6 weird kinda-hashtag-shaped panels.

[@pratikkore7947]

So the flat ones are 'adjusted for inflation'

[@TestarossaF110]

Ha!

[@theonetralewolf]

But is the VAT included?

[@aneek5784]

underrated

[@henrymarkson3758]

England's chances would be considerably improved if the match was played with a ball made entirely of Parker squares

[@nicholaslau3194]

may as well play a game of parker football

[@thexavier666]

If England almost wins, that can easily be considered as a valid Parker victory.

[@barongerhardt]

They are already a Parker team.

[@sidacharya9339]

I’m sorry I don’t get it. Could someone please explain. Thanks!

[@alwaysdisputin9930]

@@barongerhardt I believe the correct use of the mathematical terminology is: 'England are a Parker Square sort of team.'

[@f52_yeevy]

Alternative title:” Why the Euro Ball being a Rhombicuboctahedron is good for England, but not enough.”

[@xander1052]

the ball in the match apparently isn't a Rhombicuboctahedron, hence the loss.

[@daphenomenalz4100]

@@xander1052 ya

[@f52_yeevy]

@@xander1052 Oh, thanks! You've also made me notice Matt's update.

[@xander1052]

@@f52_yeevy np my guy

[@AapoJoki]

I guess England's performance at Euro 2020 could be called a Parker Square.

[@joao.gonzalez]

Me every year: ah yes, the ball is a sphere

[@ragnkja]

“The ball is round,” as we say in Norway.

[@ybbetter9948]

@@ragnkja i think most countries call it round too

[@Pointlesschan]

Lol right!!

[@olmostgudinaf8100]

Aren't the words "ball" and "sphere" synonyms? It always irks me when someone calls an ellipsoid a "ball".

[@dcarbs2979]

@@ragnkja Like a plate. Or a record :-)

[@coryman125]

If anyone ever tries to talk sports with me, I think "this year was the first time since 1966 that the ball contained rectangles" is exactly a dull enough statement to instantly stop them trying to talk sports with me. I love it!

[@emrazum]

"feels like a pretty causal link" is my favorite type of science

[@fritzzz1372]

it's called HARD science.

[@Nobody_Special310]

Can't believe they have rectangles in England.

[@cl0p38]

@@Mouly0 Here in Australia, we call them short squares

[@Anvilshock]

Do they even 'ave loicenses for those?

[@ELYESSS]

@@cl0p38 you mean upside down short squares

[@myname-rz4zk]

@@Mouly0 lol we actually call them oblongs

[@Games_and_Music]

They call them tea biscuits.

[@rdear]

“Very efficient with pixels.” What a lovely burn.

[@HassanHassan-fx3kw]

Can someone explain

[@Shyguy5104]

@@HassanHassan-fx3kw it means that it's very low resolution

[@joostvanrens]

@@HassanHassan-fx3kw I think he means that the solid keeps expanding to the outer edges of the black background and it leaves no room for borders

[@rdear]

@homemade history I’m pretty sure the joke was that the animation as animated gif with a very low resolution so I didn’t have very many pixels.

[@danksmemington362]

Does it really need more resolution anyway?

[@HeBreaksLate]

"This is exactly the same as this." And this is how we get spherical cows.

[@Huntracony]

Cows aren't spherical, there are holes in them, so they're _at least_ a torus. Vsauce did a great video about this (except humans, not cows) called "How Many Holes Does a Human Have?"

[@RodelIturalde]

I always thought cows where cylindrical.

[@BarackObamaJedi]

@@Huntracony that’s a great video, and since humans and cows have the same structure (one major hole, the digestive tract, plus eyes, ears, nostrils), even if cows are not spherical but *at least* toroidal, that means that humans are essentially the same as cows

[@thinboxdictator6720]

@@Huntracony for physics they are spherical. for maths they are about torus.

[@neurofiedyamato8763]

@@Huntracony It is a reference to a satirical joke on simplified scientific models.

[@tiago6206]

That correlation has an r² of 1.00 too. I'm convinced.

[@thymythymyth]

We need that study to be peer-replicated.

[@heh2393]

Lmao

[@rewindoflow]

What about all the tournaments before 1966?

[@neurofiedyamato8763]

@@rewindoflow they were rectangle balls so the theory holds.

[@ahmadalkhateeb1180]

@@neurofiedyamato8763 but obviously england didn't reach the finals in every tournament before 1966.

[@johnchessant3012]

I hope they will someday change the ball to be a torus, so that the UK's traffic signs are finally correct

[@witerabid]

🤔 Now I wanna come up with a game that actually has a torus as the "ball". I mean, there are many things you could do with that hole. Maybe it is played with the feet but instead of a goal (or in addition to it) you score by kicking it onto a pole or hook. 🤔 Time to stitch some hexagons together to make a footorus...

[@digitig]

@@witerabid Quoits.

[@vigilantcosmicpenguin8721]

@@witerabid I'm imagining a weird adaptation of hockey.

[@ashtonhoward5582]

@@witerabid angled spikes, mayhaps? Of course, not sharp ones

[@watcherfox9698]

@@witerabid How about a game with a torus shaped ball and a standard spherical ball where the object is to put the spherical ball though the torus, but for it to count both must be mid-air.

[@benjaminbaron3209]

"Hey, what are you doing?" "Oh, nothing, just watching a video about balls." "Okay, that's weird." "No no, I mean about the shape of balls." "Not an improvement." "No no, I mean about what kinda geometricly shaped patches need to be stitched together and inflated to make balls." "We should see other people."

[@darkienl5886]

Quite impractical to never mention the word football isn't it. Anyways nice one

[@nairocamilo]

@@darkienl5886 Sitcom's suspension of disbelief. Didn't you hear the laugh track?

[@ir-dan8524]

Relateable!

[@downey2294]

@@darkienl5886 i'll foot your ball

[@Arikayx13]

I’m so early the view counter can be represented with an 8-bit number.

[@Liggliluff]

Your like counter can be represented with a 7-bit number

[@Hapetiitti]

@@Liggliluff Your like counter can be represented with a 2-bit number

[@Liggliluff]

@@Hapetiitti Your like counter doesn't even need to be represented

[@unknown6656]

"[....] this image, which is very efficient with pixels." read: "The image resolution is shite."

[@HagenvonEitzen]

That reminds me that some time ago I excitedly took a picture of a street sign I encountered during a hike. The reason for excitement was that it used a *correctly* projected football shape. If I find it again, I shall post it here (or directly with Matt's old video on that topic)

[@Huntracony]

KZbin usually silently hides comments with links in them.

[@ALifeOfWine]

Please post here, I'm quite literally on the edge of my seat waiting for it. I need a hobby.

[@Anonymous-df8it]

@@Huntracony Why?!

[@Huntracony]

@@Anonymous-df8it I don't know, it wasn't my decision.

[@user-vn7ce5ig1z]

You forgot to mention that volleyball still uses the rectangle-ball. 🏐

[@Excludos]

Hate to break it to you, but they don't. Tournament Volleyball balls now comes in a large variety of shapes. The tippy top ones seems to be using the Mikasa balls for the most part, which consists of twisted squares and rectangles

[@una_10bananas]

Gaelic football uses the rectangles too!

[@gianlucademarchi4401]

I am italian, tomorrow we have the final match vs England ... I have seen your fantastic correlation ... I am afraid😥

[@sofia.eris.bauhaus]

eh. 🇮🇹 got almost as many rectangles as 🏴󠁧󠁢󠁥󠁮󠁧󠁿, so your chances are 3:4.

[@gianlucademarchi4401]

Wonderful !

[@gianlucademarchi4401]

😣😣😣

[@LuxFerre4242]

If it makes you feel any better the rest of the world, outside of England, are rooting for your guys.

[@TheKingartur007]

Oof, god save the queen.

[@pavarottiaardvark3431]

Missed opportunity to talk about the 2010 WC ball, that had so few stiches on it it didn't fly regularly....

[@ViliamF.]

You probably meant 2010 WC

[@NuGeera]

The "Jabulani"

[@majorfallacy5926]

The main reason they change the ball every year is so that it has slightly different aerodynamic properties and gives goalkeepers a harder time. It's supposed to increase the number of total goals scored in order to make the game more exciting so that they can sell more tickets/stuff

[@Pointlesschan]

@@majorfallacy5926 sheesh

[@pavarottiaardvark3431]

@@majorfallacy5926 I think it's more likely that they just want to sell something shiny and new. That's every year also brings new boots, shirts and logos. Unless there's some competative edge to be found in slight variations on shoelace colour....

[@Wordsman]

There's a steam game called 5d chess and it basically adds time travel to the mix. A chess game turns into a terminator-like strategy game where you can win by checkmating the king in the past. I think it would be super fun to see you look at that game, idk if there's anything statistics wise or something else you can latch onto besides the absurd speed at which things overcomplicate, but it would be fun nonetheless.

[@henrytep8884]

We need to get this man to 1 million, and that's the only math I know

[@arison2845]

your math is correct

[@MaksMikhnevych]

Did you share the video in your social media though?

[@qclod]

He has a Parker Million subscribers.

[@chitlitlah]

Your math is better than most.

[@camicus-3249]

But then we won't get as many Steve Mould videos

[@FredRosenberger]

Back in the '80s(?), there was a toy called "Rubik's Snake" (en.wikipedia.org/wiki/Rubik%27s_Snake) where one of the challenges was to fold it into a rhombicuboctahedronal (sp?) shape.

[@dantespina7398]

i stil have two of them, not sure when from, its always fun to twist it into a rhombicuboctahedronal, but without the triangles to connect them. good memory

[@huhneat1076]

3:48 I got a discord ping just as the ball went through the goal I'm still laughing

[@csours]

Huh, they used to play soccer with a volleyball. I remember coach yelling at us for doing that.

[@SgtSupaman]

Kicking a volleyball warps it pretty quickly, causing it to develop bumps. No one should be playing soccer with a volleyball. The same goes for a basketball. Neither of those balls are made to withstand a lot of kicking (obviously, one or two kicks here and there don't cause much damage).

[@json_bourne3812]

@@SgtSupaman is that just due to the amount of force applied? Does that imply that no one can hit the ball hard enough with their palm to cause the same problem?

[@SgtSupaman]

@@json_bourne3812 , yes, people's legs are easily stronger than their arms. The average punch of an untrained male can get up to a force around 700 N. Meanwhile, the average kick of an untrained male can get up to almost 3000 N. I wouldn't think it impossible for someone to cause issues by hitting the ball hard enough over and over, but to hit with that much force would be a wild hit and not at all something someone would do while trying to actually play the sport.

[@runeodin7237]

It's not a volleyball, it's only the geometry that looks similar, but the materials were different

[@emdoubleyew3788]

when a non-sports maths man gets excited about football finals: yes, my chance to talk about balls and solids!

[@ThePlacehole]

Ah yes, balls deserve more love!

[@gasun1274]

balls hehe

[@Chainsaw-ASMR]

"The ball is round, the game lasts 90 minutes, everything else is pure theory. Off we go!"

[@ethanpodmore]

I love how he changed the title after the game, such attention to detail which can be pretty rare nowadays.

[@Kevlux86]

I just finished the audiobook of Humble Pi yesterday and man, what a great book and so nice to have YOU reading it. And of course I got the print version too :) Thanks for all your wonderful work!!

[@Bodyknock]

On a related note, the Archimedean Solid that is "closest to a sphere" in terms of its sphericity as measured by the isoperimetric quotient (IQ) is the Disdyakis Triacontahedron. (For reference IQ = 36πV ^2/S^3 where V is the volume and S the surface area. The IQ of a sphere is 1, and the IQ of any other convex solid is less than 1, so the higher the IQ of a solid is to 1 the closer it is to a sphere.) So presumably this is the solid that would need the least deformation to work as a football (or, since I'm in the US, a soccer ball. 🤷‍♂️) An article on the sphericity of the Archimedean Solids is linked below for the curious. users.wpi.edu/~paravind/Publications/cmj098-107-aravind.pdf

[@__Bruh]

The disdiakis triacontahedron is a Catalan solid, a dual of an Archimedean solid.

[@Sicarius1024]

That rhombicuboctahedron looks like a folded up Rubik's snake.

[@markjreed]

Indeed it is the same shape!

[@camerondrew9402]

Which makes me wonder if the long sides of the rectangles are the diagonals of the squares.

[@Juho.S.]

Yes, that was my first thought too :D

[@Huntracony]

On the subject of unwanted shapes, there are 48 regular polyhedra. There's a video covering them all by Jan Misali called _there are 48 regular polyhedra._ The title is rather straight forward.

[@beakaltiliksew7206]

I just have a smile when i watch your videos. You are gem in this world

[@SammoElite]

"The current football in the Euro 2021 competition is based" - Matt Parker

[@andriypredmyrskyy7791]

Response to jan misali's "there are x regular platonic solids" video when?

[@bidaubadeadieu]

Seconded! Would love to see Matt's perspective on the dozens of forgotten regular polygons.

[@yaitz3313]

It's 48 of them, and YES I WANT TO SEE THAT.

[@paulkennedy8701]

@@bidaubadeadieu There is an infinite number of regular polygons. Why would dozens be forgotten?

[@xandrewhite4835]

I want a great stellated dodecahedron ball asap

[@TheBomber15]

6:26 Beautiful, loved the attention to detail in the animation there!

[@chrisd561]

Another banger video, Matt. Keep 'em coming, broski. You'll make 1M in no time!

[@joebykaeby]

I am absolutely stealing the “very efficient with pixels” burn FYI

[@cleverpaws9035]

The last time an English football team was in the final of a major tournament was in 2009. Granted, it was the less publicised, lower paid women's team, but that doesn't make it any less of an English football team. (And in 2015 and 2019 they were in what's called the "minor final" of the World Cup, a.k.a. the play for the third place.)

[@joelambert7128]

The men's team made it to the "minor final" of the World Cup in 2018 too. Nobody counts that.

[@JillRhoads]

Every type of ball seems like a new geometric puzzle each time. What a wonderful hobby! I am soooo gonna start taking pictures of all the types I see.

[@ems786]

Oh Matt, your excitement over maths is truly contagious! Always look forward to your humour and knowledge

[@timetraveller6643]

You had an episode a while back about stable vs. Unstable spin axiis in solids. Is there a solid with the "least" spin stability? Something that flips over in the fewest number of rotations maybe?

[@santiagosanz4157]

iirc from my mechanics class, the frequency relied on the difference of moments of inertia, so it is not really bounded by anything. technically you can make it change directions as fast as you want

[@timetraveller6643]

Thank you. Is it possible to weight a wooden ball with slugs of lead so it's center of mass is unchanged but it has no stable axiis?

[@hermannhigh7365]

I'd love if you made an update based on the Qatar world cup ball design. I've looked at the pictures and it seems to be a design based on triangles (possibly 8 of them) and kites (possibly 8 as well?). what is going on there?? perhaps it's a cuboctahedron-type shape with 14 faces?

[@ceegers]

Back from Katie's video. Good rec, thanks :)

[@NithinJune]

"efficient with pixels" is a very creative way to say low resolution I might use that

[@jacobhuckins494]

Right when the video starts, repeatedly press the back arrow (double tap left side of screen on mobile) to make Matt clap. If you wait a tiny bit before rewinding you can make him sing too! Edit: After testing on mobile I can say it's a lot more satisfying with a keyboard. You can't double tap fast enough to get the full effect.

[@macronencer]

This is hilarious!

[@Xnoob545]

On phone it's: aaaf, aaaf, aaaf

[@json_bourne3812]

On a keyboard you can hit between 0-9 to go to 0%, 10%, 90% etc. of the video. Spamming those buttons on different videos can lead to some very comedic moments.

[@Julia68yt]

Upvoted for the solid statistics at 8:20 alone :D :D :D

[@Hexadecimal]

These Football videos are some of my favorites on this channel

[@bentbliley]

the rhombicuboctahedron is one of my 3 favourite shapes and probably is my favourite, so thanks for giving me another reason to love it, lol.

[@CapnGreenbeard]

Unfortunately I think it's only the knockoff balls that have square and rectangular panels. The pro models are 'cubes' with the wacky shaped panels.

[@lostcarpark]

That shape is exactly like the balls I used to make with a Rubik's Snake.

[@sebastiencote1565]

Love the correlation graph at the end. There is so much people that really thinks like that hahaha. Good job as usual.

[@acentasecond3721]

Great video Parker

[@YouLilalas]

On a side note: What the heck is the Euro 2021? We are having the Euro 2020 this year.

[@YouLilalas]

@@rosiefay7283 You have a point, I know he says “2021 Euro competition” in the first half of the video. But did you also notice he says “Euro 2021 competition” at 6:34 and also a few seconds later at 6:49?

[@coreyd_thfc]

matt mate you jinxed it😭😭

[@thomasring3713]

It's truly heartwarming to see someone talk about geometry with such enthusiasm.

[@charlieburden4797]

Love how you added the (I thought) to the title😂

[@Gladaed]

Exapnding the solid seems much less intuitive than taking a saw to a larger body, sawing off the pointy bits until they stop being too pointy. :)

[@benedictifye]

You’d be sawing off an infinity of pointy bits

[@mattgies]

Sorry, bud! Additive manufacturing is the way of the future and subtractive manufacturing is the way of the past.

[@hughcaldwell1034]

I think we should go the other way. Extend the pointy bits! Make the faces concave and the balls spiky as hell. Sports need to stay interesting.

[@General12th]

What's the Archimedean solid that's the most like a sphere? What's the best way to rigorously characterize the "spheriness" of a solid?

[@felipereigosa96]

How about percentage of the volume of that solid to its circumscribed sphere?

[@pmj_studio4065]

Maybe compare the volume with an inscribed/(what's the opposite of inscribed?) sphere?

[@xenontesla122]

You could do volume/surface area and see which is highest.

[@chrisjillings]

One other option: Best fit a sphere and measure deviation.

[@branthebrave]

Similar to how regular polygons with more sides are closer to a circle.

[@boriss.861]

Matt and now you have the anticipation of the World Cup 2022!

[@lostcarpark]

Across the sea in Ireland we play a game called Gaelic Football (we sometimes play a version of it against Australia). It still uses a ball with rectangles.

[@jackwilliams7193]

This video would be much better if Matt were juggling the Euro ball throughout. That's my World Cup video suggestion.

[@EmissaryOfSmeagol]

I never realized Matt is Australian until today.

[@nawe1999]

The ability of americans to recognise accents is shocking

[@jonathanlynch8089]

@@nawe1999 I'm australian and never even noticed

[@nawe1999]

@@jonathanlynch8089 think that could be even worse! He sounds very Aussie to me

[@jonathanlynch8089]

@@nawe1999 perhaps the lack of an accent to my ears should have tipped me off

[@EmissaryOfSmeagol]

When I think Australian, I think of MaxMoeFoe and Anything4views. And also Crocodile Dundee, but I know that's kind of a caricature. Also, he doesn't sound like a criminal to me!

[@Qriz-Topher]

I would love a video like this about different Volleyballs and their effect on spin and such

[@wbwarren57]

Thank you for demonstrating how a professional miss uses statistics! So often we see amateurs doing this that it is refreshing to see how a professional handles it.

[@chrisw4997]

Just today I was inspecting my dad's football for the shape. It had octagons and weird double pentagon's

[@alexandertownsend3291]

Double pentagons?

[@chrisw4997]

@@alexandertownsend3291 they were one whole segment but two pentagon's if you know what I mean

[@richardcampbell4506]

As another Australian living in England I can confirm that this is a far more grounded explanation of England’s current success compared to the drivel being generated by the myriad of “expert” commentators 👍

[@donwebster9292]

Thanks for teaching us about causality in the same video!

[@tilmanfrers7206]

This is nothing short of brilliant!

[@ptrinch]

I guess the rectangles didn’t help.

[@breckandolley8904]

No, don't you see? The ball changes shape based on which teams are playing!

[@vigilantcosmicpenguin8721]

It's evolution; it adapts over time.

[@Ausecko1]

I think you'll find that the ball changes shape depending on which goal it's heading towards

[@MarlyTati]

I came back to check the x-axis in the 8:19 and to remind all of us that correlation does not imply causation

[@zagreus101]

Big fan of the sneaky title edit

[@pierfrancescopeperoni]

Io non sapevo neanche che oggi c'era la finale, lol.

[@97Corvi]

Immagino che le strombazzate alle 3:00 di notte te lo hanno ricordato anche a te XD

[@georgeerniej]

Question while I'm watching, paused to type: Is the area of the triangles and the squares equal? Edit: If not, what is the relationship between the area of the triangles and squares in the model shown?

[@browncoatbrooklyn6511]

Assuming the triangle is equilateral, and its sides are equal to those of the squares, as in the Archimedean solid, the square's area is bigger than the triangle's, with a ratio of 16:3. As for the rhombicuboctahedron, it varies. Suppose that the squares' sides have length S and the triangles' sides have length T. A square's' area is greater when (S^4)(T^2) is greater than 3/16, while a triangle's area is greater in the opposite case.

[@__Bruh]

2:55 The gyroelongated square bicupola is, in fact, *not* another Archimedean solid, despite all of its vertices being the same shape. Under its square-prismatic symmetry, this solid’s vertices come in two types: eight from the polar squares, and the other 16 from the equatorial belt of squares.

[@matthewcomp4114]

Amazing video!

[@grimaffiliations3671]

It’s mathematically provable that it’s coming home

[@souptime8635]

It's coming Rome

[@kelly4187]

As a statistician I gotta say I loved your "correlation". Worst trend line ever? I must disagree.

[@justinahole336]

Them there two points have mighty high leverage tho...

[@tylercrowley2559]

@@justinahole336 there’s actually 27 points which is more than enough for a linear fit curve with r^2 of 1…

[@justinahole336]

@@tylercrowley2559 Yup. But if you get to cypherin the numbers by hand, you will find that only a couple of the points account for all if the variation in the independent variable giving them undue influence - that's why we call them "high leverage."

[@kelly4187]

@@justinahole336 Too many Cook's, and too much distance between them, lead to a lot of problems.

[@justinahole336]

@@kelly4187 You're gonna give me DFIT's! ;)

[@sstandre]

If anyone else saw the balls at 3:11 and wanted to know which polyhedra they correspond, this is what I found: - 2006 World Cup: Adidas +Teamgiest -- Truncated octahedron - 2010 World Cup: Adidas Jabulani -- Truncated tetrahedron (or possibly regular octahedron) - 2014 World Cup: Adidas Brazuca -- Cube - 2016 UEFA Euro: Adidas Beau Jeu -- Cube - 2018 World Cup: Adidas Telstar 18 -- Cube - 2020 UEFA Euro: Adidas Uniforia: -- Cube (Parker Rhombicuboctahedron)

[@flikkie72]

06:40 these are the moments I live for, when Matt goes "so, there you have it!" and there's still 25+% left of the runnings time of the video

[@keelwakamar]

We all know that correlation is basically causation with extra steps. ENGLAND FOR THE WIN

[@jcl2435]

I'm rooting for Italy, but good luck.

[@cam5556]

@Kawaii Sounds it was nice to see 2 go past Kasper Schmeichel though after he what he said in the pre game interview about it coming home.

[@The_Canonical_Ensemble]

@Kawaii Sounds You can't generalise all English fans because of a few shitty fans though. I get that you're probably aren't saying that, but still.

[@sorencyrano1413]

@@The_Canonical_Ensemble A few? The English also booed under the German anthem. If the English can’t guarantee security they should be disqualified.

[@flopduarte1798]

I don’t know who to root for but I have more confidence for Italy just a little bit

[@matejcataric2259]

We all know that this would come eventualy

[@kaiserinjacky]

Not related but I’d like to see a video on the non-platonic solid regular polyhedra. jan Misali made one, but I’d like to see more views and explanations of them, especially since jan Misali couldn’t get visualizations of every one.

[@felixmerz6229]

Man I bet the guy making the designs can never wait for this video to come out.

[@KyrieFortune]

KZbin suggested it half an hour after Italy's victory, now that's what I call Parker epic

[@filippogiovannivolpe7445]

Hey! I'm here after we (Italy) have won and I just wanted to say... This was kind of a Parker prediction hahahah

[@IanZainea1990]

I love the correlation bit lol.

[@AJenbo]

I don't think I have ever been as excited about football as when watching this video.

[@PapaFlammy69]

Because reasons I suppose?

[@oriyadid]

You have got a point

[@ammyvl1]

I see

[@thisisnotmyrealname628]

Who do you think will win tomorrow, papa flammy?

[@ammyvl1]

@@thisisnotmyrealname628 italy

[@yuvalne]

The title change lmao

[@aidanclarke6106]

The rhombicuboctahedron gives me some Space 1999 vibes, I mean the Eagles shape inside and outside.

[@theremoteman4504]

Finally some Matt'h

[@PaulPaulPaulson]

What if the info that england reaches the final traveled back in time and caused the ball to have rectangle?

[@TheGIGACapitalist]

Is there a reason why the geometry is continually changed? It seems like consistency should be a priority for top level play.

[@artemikurski939]

I don't know about the reason (probably just for fun), but I guess that once the ball is inflated to be a sphere, the actual shapes and layout of the panels have a negligible effect on the ball's behaviour, so there is barely any reason to keep it the same.

[@fredriks5090]

It's a bit like the wind or placement of the sun.. it's never gonna be fair and thus there shouldn't be a standard for it.

[@PvsNP]

Selling new different footballs is a priority for top-level football manufacturers.

[@pahakuutti]

Doesn't matter what the inside shape is as long as the inside pressure the ball is adequate. The pressure keeps the ball round. Humans cant kick the ball hard enough to break the shape unless of course the ball is flat or broken, and in that case the ref or players will ask for it to be replaced.

[@astropgn]

If technologies improve, should it not be updated because of tradition and to be consistent with older versions? Consistency with the old is not ideal for the advancement of the sport.

[@julianklietz6558]

Its really quite interesting how aerodynamics play into the makeup of the ball, similarly to a golf ball it cant be too smooth, or the flight path will become unpredictable. The shape of the panels and the amount of stitches do actually play a role in this.

[@Anonymous-df8it]

Why would it become unpredictable?

[@decodedbunny101]

Hey Matt! I bought your book “Humble Pi” LOVE IT Also I need more talks

[@gormster]

I’m now wondering how Matt pronounces the name Archimedes.

[@conkrcstf6405]

He probably says "Archimedes"

[@davidr2421]

He has a pronunciation of "Eratosthenes" somewhere that absolutely triggered me

[@brianmiller1077]

To make no one happy he said Ahdi-das (pretty much everywhere but US) in the beginning and Ah-Deedus (US) later on.

[@Andrea-yu8vf]

Hey Matt PewDiePie mentioned your channel and your video about Dream in his last video

[@hilerga1]

So glad you're back! Not saying I was worried, but...

[@TAK-yj4hj]

Well that aged like milk. That's what I call A Parker prediction. (I will see myself out)