Search for the mythological Klein-ing Frame

[@standupmaths]

If you want an amazing internship in Hong Kong, check out Jane Street over here: jane-st.co/hkginternship-sum If you want to visit a maths park just outside Tokyo, I can save you weeks of research and speculative travel by just providing the modern website for the park: www.infopia.net/create/index.html Let me know if you visit!

[@BeheadedKamikaze]

Did Mr. Hashimoto tell you what all the construction equipment was for? Is he building something else mathematically-related?

[@zekk155]

Next time you need some image found ask Rainbolt, he's a pro geoguessr player so he knows his stuff

[@smallwisdom8819]

Living some 3 to 4 hours away from it (incl. Shinkansen) (impossible, it's not, and somewhat tempting, but a little costly for a playground travel, haha)

[@Nukearc]

Unfortunately CCP has annexed Hong Kong, and has not been a very safe place to be ever since

[@halffastcycling]

That's just a short bike ride from my place. Interesting you felt it qualified as countryside. To us this is very much suburbia. I could go if you need a message delivered!

[@tfofurn]

The claim that you're not trapped because you're outside the surface is the funniest thing I shall hear all day. 😂

[@maynardtrendle820]

Right after I read your comment, he said it, and I laughed out loud!😂

[@anteshell]

You're not having very good or fun day then.

[@Maxjoker98]

Quick, perform your favorite way to become (temporarily) deaf to guarantee you won't hear anything more funny! I recommend earplugs, but you could also listen to any Nickelback track.

[@rainbowkrampus]

"I'm not trapped in this prison cell! It is you who are trapped, within the prison of unlimited options!"

[@chitlitlah]

He said he wasn't trapped inside. He didn't say he wasn't trapped.

[@mmorris2830]

It's pretty awesome that Friendly Horse Guy saw you holding your camera down and waving your hand around, and immediately KNEW what you were talking about and trying to emphasize. And then brought a long stick over to help you physically show exactly what you were trying to convey. That the entire interaction happened without any common language shared between the two of you is the best thing I've seen all week.

[@TorstenLif]

Oh, but they did have a shared language - mathematics!

[@GregorShapiro]

@@TorstenLif Topology!

[@Ruthavecflute]

You could say the comman language was maths!

[@FukaiKokoro]

Math is the universal language. Anyone and anything can understand 1+1 and it doesn't change. Let's say aliens show up. Math maybe a way to communicate

[@TransistorBased]

Or his colleague that was fluent in Japanese was able to explain why they were there

[@Hunteriffic86]

The fact that he kept that park around in honor of his mother and knows about the geometry makes me smile

[@somerandomuser5155]

Topology to be exact

[@Noname-67]

​@@somerandomuser5155 the hyperboloid is geometry.

[@Soken50]

@@Noname-67 and Topology is a narrower field inside Geometry where you will find the study of surfaces, to be exact.

[@randomtiling4260]

@@Soken50 not really, topology is not usually considered a subfield of geometry. there isn't a super clear cut distinction, but usually topology is the study of properties of topological spaces that are invariant under homeomorphism or homotopy equivalence, while geometry is the study of topological spaces equipped with some extra structure (metric geometry, algebraic geometry, differential geometry, etc) that can let you view them as more rigid

[@Soken50]

@@randomtiling4260 Straight off the world's knowledge repository website, Wikipedia: "Topology is the part of mathematics concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling, and bending; that is, without closing holes, opening holes, tearing, gluing, or passing through itself."

[@cliftonchurch6039]

I love how this story with your wife's friend becomes a closed loop with bit of a twist once the final research happens. How fitting for a video about Klein bottles and Mobius strips.

[@HowievYT]

Yes yes, all this. It just may be that this adventure points to a quantum effect.

[@IndyJay53]

+

[@MetaphoricMinds]

Extremely underrated comment!

[@yossarian00]

...no. ​@@HowievYT

[@magic7ball460]

This is so surprisingly wholesome. I'm sure friendly horse guy was so happy to have people interested in his mother's old project. Most certainly made his day.

[@informitas0117]

That was so bitterly wholesome I almost felt human emotion.

[@fdabelstein]

@@informitas0117 But alas, you're an AI, so you could only simulate human emotion?

[@alazarbisrat1978]

@@fdabelstein our brains simulate them with neural networks all the same, his emotions are just as valid and human

[@Quadr44t]

@@alazarbisrat1978 that is a bold claim. I don't say you are wrong. But right now neural networks have vastly less "neurons" than human brains do (about 80 billion I think?) also how the two work is different. Neural networks were inspired by the brain, and do share a few commonalities, but it isn't exactly the same. We will see soon enough though...

[@viperion_nz]

@@informitas0117 3edgy5me

[@Chris_miller192]

This is probably the best representation of “build it and they will come” I’ve ever seen.

[@Jay-ch7fp]

Yeah, from halfway around the world!

[@misad6308]

Horse Guy is awesome. I love how Matt doesn't really speak Japanese and Horse Guy doesn't really speak english, but they both speak Math and they can communicate with that.

[@WAMTAT]

Proof that Maths is universal

[@Soken50]

And that's why we send math(and physics)-coded messages out into space, in the hope that inquisitive alien species arrived at the same conclusions and can decipher these messages and maybe reply back someday.

[@XandaPanda42]

"Why do you like math?" "Because it's the same in every language." "Woah." - Mean Girls.

[@肉骨粉]

The pile of concrete is probably from the demolition of a building that used to be home to a tiny science museum, founded by the mother of the horse guy. The museum, which featured the park as an outdoor exhibit, had been closed for years (keeping science museums running and relevant is notoriously difficult). Still, the organization behind the museum is keeping the spirit alive by hosting children's science workshops, even though COVID hit them hard. Here's hoping they continue the legacy.

[@therealoldnewb1716]

Thank you very much for these informations.

[@volodyadykun6490]

Friendly horse guy was already friendly and then even gave maths demonstration

[@dealbreakerc]

Friendly Horse Guy was the star of the show

[@GreedoShot]

dude pulled out the stick and i was like "this is more than just some guy who takes care of the horses"

[@jbird4478]

He sure lives up to his name.

[@paulj3781]

This whole story is so hartwarming. It starts with a cool playground in a corner of a horse farm, and then connects 2 math educators through time and space who turned out to be already connected. All so we get to enjoy the classic slapstick of Matt climbing a jungle gym, dunk his phone, and get stuck on the outside.

[@TangoWolf09]

Alternate title: Matt Parker doing Maths Parkour in a Park for Maths

[@MonkeyJedi99]

(thunderous_applause)

[@nurmr]

much better than mine: Matt plays Geo Guesser

[@JohnJackson66]

How much Math could Matt Parker Parkour, in a Math Park for Parkour?

[@gladtobeangry]

@@JohnJackson66 Actual improvement of the joke. I would say you zjuzjed it up a bit, but I´m not sure how to spell zjuzjed,

[@nielskorpel8860]

Rad

[@SpinyBadger]

Fun fact - Klein called it a Fläche (surface). Its appearance and some mild confusion with Flasche (bottle) led to the popular name.

[@Epic501]

Ah that is a good tidbit

[@enntimessix]

I think the Flächen (surfaces) - Flaschen (bottles) phonetic similarity was somewhat intentional. Witty Germans like to play on the double entendre of homophones or quasi-homophones - e.g. "Ein Mathematiker ist eine Maschine, die Kaffee in Sätze verwandelt"

[@mandowarrior123]

That explanation holds water, but so does a klein bottle.

[@cybershadow81]

Take a close look at the mobius monkey bars at around 8:30. You can see that the mobius strip is not only non-orientable, but has only one edge. The big pipe is just one continuous pipe.

[@KristopherNoronha]

yeah, Matt could have demonstrated that bit too... it's not just the surface but the edges!

[@shy-ohev-zion]

Yeah, a Möbius strip has a single bounding curve, a single "edge".

[@Zanpaa]

Such a cool detail! Of course it only has one edge, but I wouldn't have seen it if you didn't point it out!

[@liobello3141]

The Klein bottle only has one connected surface 🤯 /s

[@footnuke]

Whoah, that's incredible!

[@donerskine7935]

I took the end of this KZbin video, twisted it over, and joined it to the beginning. Now I watch it on a continuous loop, although half the time it is upside down.

[@janTasita]

I imagined it like a film, so it would be flipped left to right.

[@yonigle8553]

i watch it nonorientably on vr

[@timetraveller6643]

"I can see a Klein Bottle on the horizon", and just beyond that, the Cartesian Plain.

[@PhotonBeast]

LOL You win the internet for the day.

[@StuffandThings_]

I bet they never lose power there, I've heard the local grid is very robust

[@aceman0000099]

Oiler's number.

[@thomasr2472]

Shoutouts to The Flat Earth Society

[@Qermaq]

I want to sail on the M Sea. Squared! I'll name the ship the Edith Apye-eye.

[@RickMattison314]

That moment when the Japanese guy pulled out the stick and put it on the saddle surface so that it was flush was so wholesome to me. It demonstrates that mathematics can be considered a language by itself!

[@ptorq]

One time when I was in grad school a professor told us about a problem (having to do with the equations of polymer adhesion to a surface). He said he didn't know the answer, but if anyone worked it out he'd give us extra credit. After class several of us went over to the library to do a literature search and see if we could find any papers on the topic, and we did find one. Even better, it was in a journal our library had. The excitement rapidly dissipated when we discovered the journal was in French. Everybody else headed back to the chemistry building; I stayed and made a copy of the paper. Later somebody from the class and saw me looking at the copy at my desk and said "I didn't know you could spoke French." I said "I don't, but the important part of the paper is not in French, it's in Math, and I DO speak Math."

[@Soken50]

@@ptorq So did you get the credits in the end? Also hi from France :D

[@antonymitchell3385]

"I'm not technically trapped in here, I'm outside of the surface"

[@babotond]

the way mathematicians can cope is beyond humans. lol

[@red.aries1444]

Imagine the call to the fire department if he had himself jammed to the frame. Question from the emergency center: "Where are you?" - Matt answer: "I'm stuck inside ...ehm... outside of a Klein bottle... ... The channel becomes more and more a travel channel for mathematicians - and Matt is now constantly searching for new destinations with mathematical connections to have an excuse to travel around the world.

[@Pobotrol]

The human condition.

[@Keneo1]

Outside of the asylum

[@robertroach9157]

@@Keneo1 Fellow H.G.T.T.G.fan spotted 🥳

[@dealbreakerc]

I've got to say that the Friendly Japanese Horse Guy was by far the star of the video. And a lovely example of the people of Japan being absolutely wonderful soul (especially if you are off the over tourist-ed path and are polite/respectful).

[@realGBx64]

I had the same experience in Korea. If you show respectful interest in something a person knows about, they will be very eager to show you everything even if you don’t speak the language.

[@juliamccoey7496]

This is true everywhere - you'll always find there are people who love to share with you whatever it is that's 'their thing', if you show respectful interest.

[@therealoldnewb1716]

@@juliamccoey7496 true

[@dtmessiah70]

Friendly horse guy is incredible! And his mum seems awesome as well. What a fun adventure video, this was so neat!

[@Perfectly_Adequate]

Matt flies to Japan and meets a man who is the son of a Physicist that made a topology-themed playground and he's wearing an Australian hat. This must be staged.

[@AndrewJens]

I'm not sure that friendly-horse guy is aware of the geek hell that's about to descend on him?

[@SpydersByte]

right? He was very friendly and accommodating when a bunch of strangers showed up at his home, I wonder how many other visitors he gets

[@Nooticus]

Yeah… i hope he prepares himself for that. He seems happy to show matt around but showing people every hour… on his property… im a bit worried tbh

[@SpydersByte]

@@Nooticus I dont think many people are going to make trips to Japan just to see a couple kids jungle gyms and there probably arent many locals who both watch this channel and have also never seen them so I wouldnt be that worried about it

[@olenilsen4660]

7:30 - got to love the tour guide "your vehicles might vary" bit ;) After watching this to the end, it seems like your friend is in the perfect position to convince his company to fund and expand this park into something that will encourage generations of new mathematicians and physicists! How cool would it be if they could develop this concept, even sell it abroad, and suddenly we have "math" parks like these all over the world?

[@HowievYT]

A great idea. Honour Shizuyo Hashimoto - what a cool lady.

[@Loki-]

What a sweet story that comes "full circle."

[@lrizzard]

full mobius strip

[@SpencerTwiddy]

Back where you started, but now you’re an insider not an outsider

[@Izzythemaker127]

@@SpencerTwiddy That is very clever good job :)

[@maymkn]

Or maybe the 'full circle' was drawn first, and then the sweet story was filled in.

[@gustavolopes5094]

I'd say it's gone "full strip" but that would sound like something else.

[@minerharry]

Math transcends language - words cannot express how happy I felt when he brought out that stick and was like YES EXACTLY LOOK THE LINES ARE STRAIGHT!!!

[@Vincent_Beers]

Math is a language. Most people are bilingual and math is effectively universal if you learn it. It's just limited in scope of what it can discuss. It's best for logic explanations and has limited expression for abstracts.

[@GM-qq1wi]

The fact that horse-guy was able to so easily visually demonstrate the line thing on the saddle point that you were trying to describe without translation, and then compare with an actual saddle (becuase "horse-guy"), and then to learn his mother founded the park. Is that not peak serendipity?

[@DemsW]

Of course he already knew it was his mother lol

[@areadenial2343]

@@DemsW I think he meant that Matt Parker (and we, the audience) learned that his mother founded the park.

[@krissp8712]

How wonderful is it that Doctor Hashimoto worked for the same department of JAXA as David Brooks!

[@BadgerBishop]

The fact that your wife's friend you brought to translate works where the park designer worked is really the best icing on the cake that is this video.

[@rimidalvvokoban8407]

I'm Japanese, but I had never heard of this playground equipment before. Judging from the name of the ranch displayed on Google Maps, the person who made them must be a very humorous person. Unfortunately, there are limitations to KZbin's translation capabilities, so I can't fully understand your videos, but I look forward to your updates.

[@MrMctastics]

My favorite part is when it stops translating 🥴🍺

[@MrMctastics]

What is your favorite Japanese math channel?

[@tinhoyhu]

うま？！

[@bloodleader5]

Did you write this comment in English yourself? If so, you seem very fluent! How long have you been studying?

[@rimidalvvokoban8407]

@@bloodleader5 Sorry to disappoint you, but I rely entirely on Google Translate! I'm relatively accustomed to writing long sentences in Japanese. If my comments seem natural English, that's due to the accuracy of Google Translate. It could be said that science is getting closer to magic.

[@akiwi2562]

Such a cool 6 degrees of separation story - huge appreciation for Friendly Horse Guy and his amazing Mum!

[@BhbtheRock]

Matt's joy at climbing in the bottle is both charming and relatable

[@emmata98]

There is no "in" or "out" ^^

[@Zanpaa]

I'm technically just as much "in" the bottle as Matt was during that video!

[@-YELDAH]

"I've always said that it's a very small leap from the mobius loop to the Klein bottle" 11:49 very funny

[@kurero1431]

your visit might've spark some joy in that man's heart as his late mother's work and passion is still appreciated years later. I hope the equipment survives and put into a park where children can learn and play around with maths

[@markvwood2007]

Maybe this video will help make this possible because of the publicity.

[@pipeline8554]

hey mate ive been having alot of medical issues recently, ive pretty much been in pain and crying the last week and your video made me smile. thanks.

[@timmowarner]

That saddle point demonstration with the actual stick to show they are straight is a fantastic demonstration!

[@kalmes]

Yes, absolutely. Before that, I thought the straight lines were just an illusion.

[@stevvieb]

What a great Mum, both yours and horse guy. What a great guy you came across

[@oliviapg]

Wow, the connection at the end with Dave and the woman who built the park is incredible. It really is a small world.

[@malkomalkavian]

Well, it isn't really small, but it curves back on itself :)

[@LittlePunnkk]

I love how you just impulsively visit places and explore the world and try new things. It's a great trait

[@vez3834]

They probably had other things to do in Japan despite what the narrative of the video says. But it is indeed a good trait to go and explore things that interest you :)

[@kikivoorburg]

2:40 I enjoy the translated header: "Regular Polyhedron Club - Make science fun and interesting! It's fun to make regular polyhedrons. It's deep. And it's addictive [emoticon]". Even across a language barrier the wholesome excitement of us maths-fans is completely visible!

[@idontwantahandlethough]

that makes me happy

[@mycosys]

Math is the universal language.

[@jakzo_]

I was in the area and visited this yesterday. Not sure when the video was filmed but most of the things were not there (like the saddle) and didn't see friendly horse guy. It's possible the equipment was hiding behind the house which is now built. Nice to see the Klein bottle was still there though.

[@therealoldnewb1716]

Thanks for the update!

[@LePedant]

Love how the story looped back to JAXA.

[@maartendas1358]

I see what you did there ☺️

[@n00bxl71]

But it returned back with directions reversed.

[@error_6o6]

Naw it looped back to “AXAJ”

[@andreasmuller5630]

There is also a klein bottle climbing thing for kids in the Phaeno in Wolfsburg germany. I visited it several times (with my kids). You can google it to get some pictures. IMO its closer to the original than the one in the video.

[@fcturner]

7:30 “These vehicles may vary when you get here” 😂😂 Finest British humour 👌🏼

[@aceman0000099]

He's Australian!

[@ゾカリクゾ]

he does live in the uk though, right?​@@aceman0000099

[@MonkeyJedi99]

@@aceman0000099 Well, nobody's perfect. Some are Australian. (hehehe)

[@nekogod]

@@aceman0000099 True, but he lives in England, so there is a non insignificant chance he'll have picked up some British humour.

[@aceman0000099]

@@nekogod yes.

[@johncrwarner]

As a retired mathematics teacher this would have been a great "day out" We used to have a travelling mathematics hands-on show visit and once it was tied into a talk by Christopher Zeeman who introduced everyone to ways of thinking about complex numbers that provided a model to help students understand what is going on.

[@mildlycornfield]

Oh, I hope Dave could get in touch with Friendly Horse Guy to tell him that he works in the same department that his mum worked! What a small world!

[@FernTheRobot]

The moment the friendly horse guy brought out a pole you immediately know what he's about to demonstrate. Brilliant! Math does transcend language barriers!

[@Nooticus]

As a non-Maths nerd (just a general nerd, especially geography stuff, who knows very little about Maths!) this is one of my favourite videos you’ve ever made. Just phenomenal storytelling and narrative work here. So lovely :)

[@AB-wf8ek]

Yea, I found this really touching. Oftentimes, when Western personalities cover topics in East Asia, it's only a surface level view from the outside looking in. This was really refreshing how it turned out to be a view into one person's quirky passion project on the other side of the world. The son's effort to preserve it the best way he knows how is really endearing, but also a little sad because you know at some point it will likely decay beyond repair. A reminder to enjoy things while they last, that the world is made up of real people, and gratitude to channels that take the time and effort to share stories like this.

[@kimjongun8906]

Honestly one of my favorite KZbin videos of all time, amazing all around

[@swang30]

6:20 it just says "Be careful of your head" implying - low hanging branches. Not necessarily falling branches.

[@nichan008]

Yeah, pretty sure they just looked at the picture of branches falling off a tree and decided that's what the text says. So much for fluent in Japanese.

[@danbbrandon]

@@nichan008fluent in spoken Japanese =/= fluent in written Japanese. Kanji are HARD

[@nichan008]

@@danbbrandon Then you're not fluent.

[@jackdog06]

@@nichan008if knowing every single kanji is your requirement for Japanese fluency I think a lot of native Japanese people may struggle to meet your expectations.

[@nichan008]

​@@jackdog06 I didn't say it was. But not knowing how to read 'watch your head' is not really some esoteric message now is it? I don't consider myself 'fluent' even with how much I can read, speak, and write the language. Conversational isn't fluent. Even business level is still not fluent. Native is beyond fluent. There's an explicit ranking system for this.

[@boiledelephant]

I think most sons can appreciate the deeply rooted desire to carefully preserve their mothers' achievements in the hope that the world will appreciate them in years to come.

[@Juan-qv5nc]

What a beautiful story. The math park deserves more attention than what Friendly Horse Guy is able to give. There should be kids playing on those things! And adults as well! Also Mrs. Hashimoto deserves more recognition. It is awesome that you have made this video for everyone to enjoy, thank you.

[@Cuestrupaster]

This is what I love about physics and maths... is that doesn't matter what language you talk, it's always the same, and it'll be always the same no matter where you are in the world... or in the universe, is such a perfect and beautiful thing.

[@eugenemasoniv8641]

Greetings from Ibaraki! I'm American but been living here for 5 years. I really enjoy how you show so much respect to the froendly horse guy and his late mother! Thanks for such an interesting video!

[@jevvvNZ]

Lovely adventure, and so good to "meet" the founder's son! It was wonderful seeing his enthusiasm with your exploration! Thank you! And thank you Friendly Horse Guy!

[@AliasA1]

"Running out of options and feeling really desperate for some sort of resolution I knew what I had to do. So I booked a plane ticket and got on a flight to Japan in search of some sort of answers."

[@omegaroguelp]

of course!

[@Gabu_]

an internet classic

[@theneekofficial8829]

Am i the only one getting flashbacks to that guy that has done that to solve many of his nintendo history related issues

[@TurtleKwitty]

Was honeslty expecting him to show up XD

[@swaree]

@@TurtleKwitty same, this was tailored for Nick

[@magneticflux-]

"Attending a conference in Japan to justify the trip by Lucie Green" a _crucial_ contribution, I might add!

[@Zaphod_]

10:35 "I'm not technically trapped in here. I'm technically outside of the surface" 😂

[@iTeerRex]

But practically in trouble 😁

[@viliml2763]

technically there is no "inside" of the surface

[@ad08star]

The lady who founded this park was a true teacher. ❤

[@Bystander333]

Hopefully his mum's park becomes a lot more popular now and both locals and foreigners come to enjoy it!

[@robertjenkins6132]

Yeah, it seemed kind of ... dilapidated, like not very many people were visiting it. Hopefully it will become more popular.

[@privacyvalued4134]

18:12 This is where it is appropriate to start singing, "It's a small world, after all..."

[@iTeerRex]

How fitting for Matt Parker to go half way around the world to find the math park. A journey of self discovery 😁

[@aperson1]

And they're maths you can stand up in as well!

[@test74088]

Now to reciprocate math needs to go on a journey of discovery to a Matts park …

[@Ember_San]

15:23 that was genuinely so cool, I have never laughed/smiled before but that stick showing that line was straight is dope. And I love that man, you can see how much he loved that

[@xbolt90]

A video involving Matt, topology, playgrounds, horses, and JAXA is a bizarre intersection of my interests that I didn't think possible. Visiting Japan is a bucket list item for me, now I have something else to do when I go there!

[@camivipla]

I love this channel, it brings me so much joy. I've been a fan for years and I really admire your capacity for explaining things.

[@Paul71H]

That's a wonderful story! I hope "friendly horse guy" gets a chance to see this video, and that this video brings a few more visitors to the maths park.

[@mongolianstallion8274]

The friend you guys brought along with you working at the same department as the person who built the place you guys went to look at feels like a handshake across time.

[@chrissuich7423]

For just the day the Maths Playground was Matt's Playground. Such a fantastic and serendipitous ending. ☺️

[@Keneo1]

The Maths park playground was Matt Parkers’ Playground

[@FroggyNight]

You could tell that he was super excited to see others interested in something that not only meant a lot to him, but seems others might have forgotten. And then you mentioned his mother. Ughhh right in the feels.

[@csours]

A real Maths Parker. A beautiful story

[@Hiznogood]

Sometimes the world feels so small and we all are connected! Thanks for a wholesome and a educational story, it put a big smile on my face!

[@stephenbenner4353]

I just keep thinking that your wife is either just as nerdy as you or infinitely patient to go on these ridiculous adventures.

[@PhotonBeast]

Both. She's a practicing solar physicist.

[@AquilaSornoAranion]

Matt's wife, Lucie Green, is also a science communicator. They're both nerdy 🙂

[@andrewkepert923]

Why not both?

[@digitig]

@@AquilaSornoAranionEven so, “Would you like a trip to Tokyo” is likely to get a “yes” even from a non-nerd.

[@barefootalien]

What spectacular serendipity! I needed this tonight, thinking about the unfortunate existence of suffering. Thanks, Matt.

[@Fake_Blood]

Build the Matt Park, we'll kickstart it. Steve Mould can help, he's good at building contraptions.

[@danbert8]

Oh man, it could have awesome 2D water slides!

[@sshrpe]

Parker Park. A mathematically themed park in the shape of a square that’s almost magic

[@briantaylor9958]

That was a great adventure! Math can truly take you around the work and link people! I was especially touched by the story about the founder, the founder's son and the relationship to your wife's colleague.

[@Huntracony]

I really like that mobius design! Also probably better suited for monkey bars than the traditional loop-with-twist shape.

[@martinconnelly1473]

I have been somewhere in the UK (with grandsons) where there is one of these.

[@BonnibelLecter]

I had one of those "humans are great" little tear ups about the creator's son still keeping it around only for someone who worked where his mother did to show up with you later.

[@thephelddagrif2907]

I am inkleined to like this video

[@ObiwanNekody]

😂

[@MrNiceGuyMEGA08]

​@@ObiwanNekodyLet it out, don't bottle it up!

[@MooImABunny]

wow this is so sweet. I'm so glad Hashimoto san is still there, showcasing the wonderful work of his late mother.

[@catsandcrafts171]

This made me smile so much! I'm so inspired by mad adventures that result in something over and above what you even hoped for. What a wonderful experience, and isn't Friendly Horse Guy fantastic? :D

[@PADARM]

That place is a nerd's paradise and ..... I love it! I hope they restore it and maintain it. I had so much fun with this video

[@jmalmsten]

While it was a great video. I am a bit flustered that there was no wild Cliff Stoll sighted anywhere around the park. If, Dog forbid, if that park has to be torn down for any reason. We need to fund the transport of that Klein Bottle over to Cliff.

[@Headhunter_212]

I was really hoping for a Cliff Stoll sighting.

[@SuryaBudimansyah]

Dog really forbid you and the viewers. I was hoping Dave could extract more stories from the friendly horse guy

[@robread-jones3698]

I don't know if Cliff's basement is big enough for that one, or if his robots could carry it!

[@jingalls9142]

Dog be with you. Lmao I also say dog instead god. Or I say ohh your god instead of ohh my god.. I stole that from Bender of Futurama fame. Dogdammit that show was great.

[@seven7264]

Never before has a 5-minute intro held my attention completely for its entire duration. Hat’s off to you, Matt.

[@OlegDorbitt]

I'm at the start of the video, is Matt actually gonna Nick-Robinson this climbing frame?! He absolutely did it, wow! I wonder how many more KZbinrs will find an image of something interesting in Japan and just go to it?

[@andyhu9542]

This is exactly what I thought.

[@tommo4356]

As soon as i heard "Japan" i thought: someone get Nick Robinson in

[@cameron7374]

Cut to the airport, flight to Japan, look at the thing, meet the locals... This is 1:1 a Nick Robinson and I am so happy for this crossover. Truly my favorite genre of KZbin video.

[@phillipp1399]

This kind of video is exactly why the internet exists, should exist, and continues to exist. Bravo.

[@mapler90210]

When you said you had to locate the park from the single picture, I was expecting a brief geoguessr collab. Glad you were able to find it! What a cool park and what a cool coincidence you friend works at the same place the creator once worked at. I wonder if we have anything like that in the states, I would've absolutely loved it as a kid (or even right now, frankly)

[@DanielTheCooliest]

It must've been a great joy and honor for him to share what his mother loved with someone like you who truly appreciated it and flew even so far to see it.

[@thatoneginger]

I got chills at the end! Very cool! Wishing horse guy the best!!!

[@deschamos7599]

That was such a heartwarming resolution! Lovely to see math enthusiasts finding themselves connected.

[@bobfels5343]

When "horse guy" came out with his stick and showed the properties of the saddle, I was like: wait what?? He deserves a proper name instead of horse guy :( he is awesome! Ahhh at the end you give the credits :)

[@malfruemulo]

8:04 lol I love the sign below the park sign, it says “うま？！“ which means “HORSES?!”

[@djsmeguk]

What a lovely adventure. I hope horse guy keeps things going!

[@TheTechAdmin]

I missed you by 10 months. I would have been so happy if on the same day I went to go find this, you were there too! I should have known you would come by there sooner or later!

[@johnlewis2930]

I can only assume that if Cliff Stoll ever visited he would explode with excitement

[@KarolHaltenberger]

Exploding with excitement is what Cliff Stoll does on a bad day. I can't image what would happen to him here. Unless you mean literally explode.😁

[@zaraak323i]

I was thinking this exact thing!

[@adamqazsedc]

He would certainly climb the Klein bottle even for his age!

[@hgesser]

This is a great video - so much fun to be had! Love the enthusiasm that made you make that trip 🙂

[@mdmn-ARCA]

I didn't expect to find a Nick Robinson video on Matt Parker's channel, very surprising.

[@DoubLL]

10:20 I fully expected you to get stuck halfway down the way and hanging there with your head down until you could get rescued 😂😂😂

[@wtspman]

It’s a shame you didn’t take Cliff Stoll along with you. I could imagine him turning inside out with excitement.

[@HeiniGurke]

I was totally expecting Clifford Stoll to crawl from underneath the klein climb when they got there :D That would have been amazing.

[@glennhodgson6639]

I came to this video randomly. It scratched an itch that I didn't know I had. Thank you so much!!

[@jansenart0]

5:30 "Walking Path" "Kawasaki City Kurokawa Youth/Outdoor Activity Center" 6:05 "Watch your head" 8:00 "Specified Non-profit Corporation" "Discovery Workshop Create" "HORSE?!"

[@LegosSnake]

I just love humanity and this video is humanity distilled into finest bits. People from completely different cultures with completely different languages communicating over a shared love of math. Good stuff

[@Robi2009]

Hats off for Friendly Horse Guy and his Mum!

[@ericdoucette6998]

Great work! Clearly a lot of resources & logistics went into creating this video. Many thanks to everyone involved.

[@T101G]

I can't believe this video started as a Rainbolt video, and then went full Nick Robinson