<a href="#" class="seekto" data-time="1818">30:18</a> Correction: He said Tokkyo (特許 patent), not Tokyo. The entire sentence is: We made the patent open to everyone, which made the QR code so popular.
The part in <a href="#" class="seekto" data-time="1818">30:18</a> where the translation of what Mr. Hara said was "We decided to launch it in Tokyo..." is actually「特許オープンにした」which means "made it an open patent..." So he actually said "We realized that it was the right thing to do when we made it an open patent. And as a result, it spread widely and we think that it's really good." I learn so much from your videos Derek! Thank you so much!
2 follows 1, 3 follows 2. It's pretty simple, just keep going. Once you have the basic code for higher dimensions, you just run it out to 15. Could be 100, just keep looping. It is simple. Let the computer do the work. They like "complex" things like that. lol
@@paddor And that's why you didn't make the video. This video isn't made for people who have intrinsic and intimate understandings of higher dimensions, or at least not specifically. It's a helpful visualisation of how they actually affect the topic at hand in a way that is easier to understand for the average layman.
It’s definitely really cool stuff, but it wasn’t invented by this guy who made the QR code. The error correcting codes themselves have been around since the 1960s, he just decided how to organize the information about which level of error correction is used.
Try an experiment, find yourself an (audio) CD, a corresponding player and a black marker, ideally one that can be washed off with iso, and then start painting sectoral covers, just paint 4 or more radial lines from the centre and start expanding them. You should be able to cover almost a quarter of the area before error correction gives up.
@@dougdouglass6126 But it was implemented in a simple functional system that is now universal. It is like you are bitching about Rembrandt because he didn't invent paint.
Error correction is the purest form of magic that I've ever come across in mathematics. It's like that children's trick where you take someone's birthday, add, subtract, multiply and divide it with some numbers and then guessing the original number from the result. That, but taken several steps further. It's honestly magical to me every time I think about it. P.S. I was gearing up to write a 'long video but still no full form of QR' comment but you unexpectedly blindsided me with it at the end. Well played, good sir.
For those that are convinced that SOS is an acronym a quick Wikipedia search explains that, originally (in 1906), SOS was chosen because is easy to remember and to read. The idea that it is an acronym for "save our souls" or even "save our ship" emerged years later as a way to help in remembering it. Fun fact, this phenomenon in which a meaning is invented for a sequence of letter is called a backronym
It’s still a pity that ‘Big V’ asserts the ‘code’ was invented by Morse. It was not, he merely ‘popularised’ it 🤬 I guess I’m wasting my breath pointing out that it’s not a ‘code’, it’s a cypher. NaYa. 🤓👍
<a href="#" class="seekto" data-time="186">3:06</a> - Not only did real-time DEcoding of Morse Code come as a surprise to Morse and manufacturers, but real-time ENcoding wasn't anticipated either. There many things that nobody thought humans could do until humans were doing it. The original intent with Morse was that you'd use the codebook to translate the message's letters (and maybe some punctuation) into dots and dashes, then completely lay out the message using metal slugs (short ones for dots, long ones for dashes) in a rack or on a drum. With the message already composed, you'd step up to the wires and turn a switch that would turn on a slow-turning drum at the telegraph wires' other end. That drum was coated with paper or something similar, and a pencil (or something similar) was pointed perpendicular to the drum's circular surface, towards the drum's axis. The switch's current also rang a bell at the receiving station, to tell someone to be sure to have paper on the drum for a soon-to-be-incoming message. The pencil was held by electromagnets (or something similar) so that with current applied (miles away), the pencil would be pressed into the paper on the drum, and when the current was interrupted, the pencil would rapidly retract. Then the sender would run their rack (or drum) of dots and dashes over the contacts, which, miles away, completed the circuit around the pencil and caused it to write long and short marks (the dashes and dots), separated by empty white space, on the drum's paper. People at the receiving end would then use the code-sheet to change the drum's paper's dots and dashes back into letters. At the time of Morse code's inception, nobody knew that the process of changing letters into dots-and-dashes at the sending-station and the process of changing dots-and-dashes back into letters at the receiving-station would soon be done without cheat-sheets by people who could do it entirely in their head, FROM MEMORY of the code-sheet, and IN REAL TIME, which made sending a Morse message more like talking back and forth and less like typesetting a broadside for a printing-press.
@@chiaracoetzee Well, the paper on the drum could be turned inside-out and reused. The pencil (or ink) would of course have a finite life. The rack of short and long slugs that completed the electrical circuit miles away from the pencil would just be taken apart and reused for dost and dashes the next time a message was sent. I have surmised that the ability to read a music-score in real time (a.ka. "sight-reading") was also a surprise. The original intent with scores was that they were ways you could FIGURE OUT what music to sing, and go over it several times, a bit faster each time, to learn it, much as we expect actors in a play to have read the script in advance to have learned it. You had the score with you when performing, but it was just a memory-guide, like a teleprompter for words you have already memorized anyway. But as time wore on the human mind turned out to be capable of going straight from page to concert-hall AT TEMPO.
<a href="#" class="seekto" data-time="615">10:15</a> "In Go, you basically place stones at the intersections of lines" <a href="#" class="seekto" data-time="760">12:40</a> Derek: mmh yes squares
Also go is most commonly played on 19x19 (19x19 intersections) board. The board he uses is 26x26 (intersections) that's too big to play on. So yes, it's annoying and looks weird to me but it's not even common go board so I don't care that much.
@@DorrySkog Right, but he's just representing zeros and ones using discrete units, so in the end the result is the same as if he shifted all of the stones to a vertex.
As a software engineer myself, I always appreciate learning about the intricacies of different encodings. I've learned how QR codes work before, but these videos add the stories to them that remind me of all the people behind these amazing technologies. This was a really cool video; thanks to everyone at Veritasium who made this (and all your amazing videos) possible!
@@taylorbrown9849 As a software engineer myself, yeah, we're always bottom of the pile when it comes to public appreciation! 😂 It's marketing's success off it works, our failure if it doesn't 😉
*Are you kidding me....* I just spent _two weeks_ researching how QR codes are made and implementing my own generator... and then days later you drop _this_ , revealing all of my laboriously-gained arcane knowledge to the masses in half an hour.
The good news is: The masses will not gain the knowledge you have acquired through hard work. The other news is: how much good this knowledge will do you, depends on your next step.
<a href="#" class="seekto" data-time="1818">30:18</a> miss translation bro （Japanese）「いわゆる特許をオープンにしたことで...」 （English）”We decided to launch it in Tokyo..." -> "Because we made the patent open for everyone to use...”
@@PuthySlayer69420 just because he speaks japanese doesn't make him a weeb. he could be but he could also have learned the language for fun or been born in japan.
As a software engineer myself, I always appreciate learning about the intricacies of different encodings. I've learned how QR codes work before, but these videos add the stories to them that remind me of all the people behind these amazing technologies. This was a really cool video; thanks to everyone at Veritasium who made this (and all your amazing videos) possible!
@@jamilateef6392 what are you on about fam? This bot stole a legit comment word for word and then likebotted, all for the purpose of directing idiots to click on the shady link in its bio.
I got teary eyed hearing the painter's name. He lost the love of his life and dedicated his life to solve the problem that cause him heartburn. A grieving man knows no rest.
Yes, it is upsetting. Now this is why some things should be improved. That was his goal. He succeeded. So may he rest in peace content as he has achieved what people would use for centuries to come.
I mean... to solve A problem that caused him heartburn. THE problem was that he left his wife right before she gave birth which is always a medically scary situation.
it reminded me of a similar story about a guys wife dying because of slow delivery time, but instead of inventing morse code he dug a hole through a mountain
<a href="#" class="seekto" data-time="725">12:05</a> I just scanned the QR code out of curiosity LOL Version 1: I'm the OG Version 2: I'm a bog-standard QR code
@@typothetical here it is: Version 40 QR Code can contain up to 4296 chars. A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional code) that is designed to be read by smartphones. The code consists of black modules arranged in a square pattern on a white background. The information encoded may be text, a URL, or other data. Created by Toyota subsidiary Denso Wave in 1994, the QR code is one of the most popular types of two-dimensional barcodes. The QR code was designed to allow its contents to be decoded at high speed. The technology has seen frequent use in Japan and South Korea; the United Kingdom is the seventh-largest national consumer of QR codes. Although initially used for tracking parts in vehicle manufacturing, QR codes now are used in a much broader context, including both commercial tracking applications and convenience-oriented applications aimed at mobile phone users (termed mobile tagging). QR codes may be used to display text to the user, to add a vCard contact to the user's device, to open a Uniform Resource Identifier (URI), or to compose an e-mail or text message. Users can generate and print their own QR codes for others to scan and use by visiting one of several paid and free QR code generating sites or apps.
Version 40 QR Code can contain up to 4296 chars. A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional code) that is designed to be read by smartphones. The code consists of black modules arranged in a square pattern on a white background. The information encoded may be text, a URL, or other data. Created by Toyota subsidiary Denso Wave in 1994, the QR code is one of the most popular types of two-dimensional barcodes. The QR code was designed to allow its contents to be decoded at high speed. The technology has seen frequent use in Japan and South Korea; the United Kingdom is the seventh-largest national consumer of QR codes. Although initially used for tracking parts in vehicle manufacturing, QR codes now are used in a much broader context, including both commercial tracking applications and convenience-oriented applications aimed at mobile phone users (termed mobile tagging). QR codes may be used to display text to the user, to add a vCard contact to the user's device, to open a Uniform Resource Identifier (URI), or to compose an e-mail or text message. Users can generate and print their own QR codes for others to scan and use by visiting one of several paid and free QR code generating sites or apps.
The Snake QR code guy is named MattKC and he has a has a RU-vid channel. I’m sad you didn’t shout him out he has a lot of really cool stuff on there. Edit: He added a shout out in an info card.
@@vaisakh_km and I remember getting the recomdation for it, youtube recomended it to me many times because it knows a lot about me. But I ignored the video becuase I thought he would simply point a link to the game, It was a tempting click and I gave a hard thought to think what the guy is tryna do and i just cannot comprehand how you play a game with a barcode. I will indeed check the video out now. RU-vid will be like bro I told you to check this out so many times! Now you realised. lol
<a href="#" class="seekto" data-time="20">0:20</a> : “QR codes are a language for machines, and I am a human. But I was wrong” Finally Derek admits his true nature.
adding color as the inventor mentioned will essentially render them 3-dimensional, where each color represents a level, or maybe a combination of levels if enough colors are used.
@@MarcoLandin Exactly, also, we normally use 3 channels, so that would mean 24-bits per pixel in a QR Code. Going from a single bit to a 24-bit is like making a building with 24 stores, so we can say it creates 24 levels. However, i think since most colors are too similar and that would be a problem for the reader to read, they would reduce the number of color bits. In fact, it was proposed a 4 color and an 8 color version, which seems good enough...
@@MarcoLandin then we can make it 4 dimensional with the third spatial dimension, or 5 dimensional with it being an animation, or even 7 dimensional if we use individual HSV values instead of colour
@@sophiacristina I don't think we'd use a full 24-bit depth as sun fading, odd lighting conditions, and other natural deterioration and obfuscation would be very problematic.
A few years ago, I was obsessed with writing a sudoku generator. I wanted to be able to print a set of solvable puzzles, but I also wanted the user to be able to scan them into a smartphone to use with one of the existing sudoku apps. I wrote a small QR code generator in Go (the language I used for the generator). With that, I could print each puzzle and next to it, a QR code.
<a href="#" class="seekto" data-time="499">8:19</a> Funfact: Up until 2022, if you were someone who was in the UK between 1980 and 1996, you were not allowed to donate blood in Australia.
When I donate blood here in the USA, I am quizzed heavily about any extended time spent in the UK in the 80s and 90s. (Short visits seem acceptable, but more than a couple months seems to be hit the risk threshold.) Fortunately I did not spend time in the UK then, but I'm assuming they would not collect my donation if I had.
<a href="#" class="seekto" data-time="1348">22:28</a> Ok I will definitely treat those six numbers as Coefficients of a degree-five polynomial. Wait.... I have no idea what that is
I was with him when he added the A and B to the number string... then i might as well have been hit with a bat. ive never heard the word polynomial before
More than that really! The guy who came up with the blue LED; for his encore, he also did blue laser diodes, as used in Blueray, high speed fibre comms, the lot. He announced this second invention at a conference on the topic of "why is a blue laser diode too hard to build?" by using a blue laser pointer in his presentation, not a red one. It took the audience a short while to notice, and then I imagine the conference got pretty interesting!
@@abarratt8869 That's some actual chad energy. Wish there was a video of that moment. Would love to see the crowd suddenly go whaaaat as they realize he's using a blue laser pointer.
Those are wonderful accomplishments for sure, and I admire the Japanese people for not sliding into self destructive degeneracy like we have. But the "greatest?" I'd argue that the internet is the greatest invention of the past century. Regardless of how people misuse it, it has given every human on earth instant access to the whole of recorded human knowledge. That's insane...
I hate them when they’re displayed on the PS5 during a system update so you have to scan them with your phone to learn what the update is doing…instead of JUST TELLING ME WHAT THE UPDATE DOES
@@aditya.khapre to be fair, how they are used and applied accounts for most of the representation/reputation and that's fair by association. It is used more poorly than good.
@@runswithraptors Eh, that I can somewhat understand, online menus can be kinda preferrable to physical ones given they are easier to update with, for example, a dish of the day or something.
One cool thing you can do with QR codes that intend to contain proprietary data, such as an inventory tracking app, is encode the data as a parameter to a URL. The app will know to expect that URL to say “these are the codes we are looking for” but also as a way for a generic code scanner to redirect any given code to an App Store to download the correct app. Of course this introduces some privacy concerns but something like a container ID may be harmless to send.
This was such an awesome video! Thanks making the effort to interview Mashiro Hara. Capturing a moment in history for something that has become ubiquitous within a generation. Oh and all the encoding and error-correction was fascinating as always. :)
I love how you emerge from the exercise and having an interview with the inventor of QR code, you maintain that you hate QR code, while having gained insight. Might be just me, but I find it lovely to be able to appreciate the ingenuity of something without liking it 💖
Error at <a href="#" class="seekto" data-time="665">11:05</a> into the video. 8 bit ASCII are not assigned a value from 1 to 256. They are assigned a value from 0 to 255 giving them 256 possible combinations. Zero is 00000000. One is 00000001. 255 is 11111111.
@@rubendriezen7177 Well, if you consider the many character sets/encodings that include ASCII as a subset, there are plenty that use 8 bits. But, by definition, these aren't ASCII: ASCII is well defined, has a clear standard (ISO/IEC 646:1991), and uses only 7 bits to encode 128 code points.
Reminds me of the book Shades of Gray by Jasper Fforde, in which animals are all born with barcodes indicating their classification and people would do the bird watching equivalent of writing down the barcode of an animal they saw in the wild in their notebook and showing it to their friends
I got teary eyed hearing the painter's name. He lost the love of his life and dedicated his life to solve the problem that cause him heartburn. A grieving man knows no rest.
Indian here. We use QR code based UPI apps to carry out our transactions about 100% of the times. I genuinely cannot remember the last time i actually carried cash (and this is not an exaggeration). Everyone uses these QR codes to pay, and you will find them everywhere, the smallest street food vendor to the biggest luxury stores. I am used to scanning the QR with my phone within a second. Doesnt matter the angle, the blur, it instantly scans and pays, and i cannot imagine being in a country where this is not as mainstream as here
Yes, why this is different from NFC or cards, is you would definitely find stores which don't accept anything but cash in many countries, but with India's QR codes, it's as easy as downloading an app to setup a QR. The apps in fact have hired people to go to each and every merchant in their assigned cities and convince them to setup their app and QR codes. It is just Direct bank-to-bank transfer without any intermediary. Mediums like Visa, MasterCard, or phone wallets charge either the customer or merchant. All you need is a bank account and a smartphone to setup your QR for free, while you need to pay merchant fee to the likes of Visa on every transaction and buy the card scanner machine. This is why small stores across countries charge extra if you pay with card.
@@squidwardfromua You'll get used to place it on the intersections very quickly. And then it feels odd to place stones inside the squares. When you start playing go and get familiar with a 19x19 board it will feel very different from a chess board. So you won't confuse it with the chess way to place stones.
Indonesians are also really into using QR codes. They’ve even standardized QR payments with something called QRIS (with IS standing for "Indonesia Standard"; also a pun of keris, a traditional Indonesian weapon). What’s craaaazzyy about QRIS is that it accepts payments virtually from any bank and any e-wallet. At first, each payment provider had its own QR code, but now it's just QRIS everywhere. From minimarkets to restaurants, and even street vendors/peddlers on the roadside! It’s wild!
This is such an amazing video. For those interested in more about error correction codes and how they work, 3b1b has a couple of great videos on Hamming codes (which are kind of outdated but you'd be able to relate to what you saw in this video) he also made a video on an almost impossible chessboard puzzle which also related to error correction codes and how the puzzle connects to counting the vertices of higher dimensional cubes.
Quite brilliant! As you say, only machines can read them. On security, your phone's camera can read them, but normally they don't tell you where they will take you, and just take you there. For that reason it is better to install a third party QR code reader that checks the code against scams. At the same time you have to disable the QR reading function in your phone's camera settings.
Could pick up a couple words here and there possibly, or there was more likely a translator on the call and he recorded and mixed the audio separately, taking out the translator portion.
i found out you can use a QR code generated by gopro software, hidden from general users, that can unlock secret settings and push the limits of the gopro camera
A growing trope in science fiction media is the "cheat QR code", wearing some pattern that is hardcoded in AI systems to treat the person wearing it differently. I mean you can wear a paper bag on your head too to beat most recognition systems but that's something else.
<a href="#" class="seekto" data-time="1731">28:51</a> Oh feel this. I once spent over an hour writing a QR code on a postcard by hand in pen as part of a practical joke. You can imagine my elation when it successfully scanned. They are not meant for humans.
I still hate QR codes... Companies complicate things so much with them. Sometimes, they can be useful, but often, they're just an unnecessary extra step that makes things tedious for no reason.
Agreed, all they have done in my eyes is dramatically increase the modern worlds dependency on our distraction machines (phones) and forced people who don't want to engage with this crap to jump through hoops. In the age of digital enslavement we are even more tied to the whims of corporate scumbags.
Edit: (kinda already a thing) At the end he mentions that he's trying to incorporate color into qr-codes. There are probably a few differnet levels to it but if they can somhow get around color calebration isuues then then we would REALLY never run out. I think the easiest way to start with this would be to use simple RGB where 0 is a 0 and 255 is a one. That way each pixel store hold 3 bits
@@marcellkovacs5452 oh wow, seems like it's been around for a while too. I'm surprised he didn't mention it. I guess it's not as widespread b/c it's easier to print black and white...
Correction: Strictly speaking, ASCII is only 7 bit, not 8 bit. ASCII is 0 through 127 (128 code points in total). Numerous other character sets have extended ASCII for utilizing 8 bits and beyond. Without getting into the details, we often use UTF-8 nowadays, which is a superset of ASCII.
While i agree, the Extended ASCII is basically "the norm", and in a colloquial way, we just say "ASCII" to make it simple. ASCII as a term can encompass both extended or not when one does not elaborate.
Correct, however "ASCII" is still often the term used, even incorrectly. I think this is just because it is much easier to say "askey" than "U T F - 8" or "UNICODE". Similar to how the modern ethernet cable connector is commonly referred to as RJ45 when it is actually an 8P8C connector. Much easier to say RJ45 than 8P8C. Like "ASCII art" is still called ASCII art even though it's almost certainly residing on a webpage utilizing UTF-8. I mean... is it still technically ASCII if there aren't any characters that strictly make use of UTF-8's encoding scheme, even if UTF-8's encoding scheme is being used? If you create a .cpp file, write only backwards compatible C code, and compile it with a C++ compiler and it compiles without error, was that C or C++ code you just wrote?
I once wrote a research proposal on how inserting images and logos into QR codes would affect their "scannability" (i.e how much more likely a person is to scan a QR code with a logo over one without), during my bachelors and learned a lot about them. The EC and "Contrast Scanning" allows one to insert a wide variety of different types of images with pretty neat results. Big props to Denso Wave for not copyrighting QR codes!
<a href="#" class="seekto" data-time="622">10:22</a> "Can you remind me what game are we playing?" "Idk, just continue to put stones on the board. Don't ask unnecessary questions"
Trivia nitpick: The distress code is not SOS. SOS would be ".../_ _ _/..." However, the distress code is "... _ _ _ ..." -- that is, there are no pauses between sections! This is usually represented by placing an overbar above the letters, to indicate that the operator should not insert pauses.
@@thesinghzingkid SOS is treated as a SINGLE LETTER, not a word. I used slashes here because multiple spaces in a row don't work reliably in RU-vid comments -- I know that's not the traditional way of writing it, but I assumed people could get the point in context of everything else I wrote.
I hate them when they’re displayed on the PS5 during a system update so you have to scan them with your phone to learn what the update is doing…instead of JUST TELLING ME WHAT THE UPDATE DOES
This is such an awesome video! I never knew so much about barcodes and their origin, and now I understand how they work and why. I work at a grocery store and deal with barcodes all day long, hundreds of times a day. Every time I stock a product, I check the UPC (universal product code, or barcode) to make sure I am putting the right product in the right spot. Usually I only check the last 2 digits, which is usually sufficient enough as long as you are in the right section and are fairly sure it goes where you are putting it. For example, when stocking different flavors of the same product. Also, I was always told not to enter the last digit of a barcode when ringing up an item, or entering it into the computer system, but never knew why! Now I have an all new respect for something I had no idea was so intricate and well designed!
1. At <a href="#" class="seekto" data-time="1724">28:44</a> - I just love (a) the bare feet and (b) the fact that the grid is lined up with the parquet floor. 2. At <a href="#" class="seekto" data-time="521">8:41</a> - the cows were "culled" not "called" (as per captions)
As a student studying engineering this video made me realise that there are very smart people in this world. And this is overwhelming.
2 дня назад
The Snake QR code guy is named MattKC and he has a has a RU-vid channel. I’m sad you didn’t shout him out he has a lot of really cool stuff on there. Edit: He added a shout out in an info card.
Reed solomon encoding has always been a crucial part in Data Encoding and Error correction, especially in web 3 it's use case are phenomenal. But I never got the curiosity to understand it's theory. Looking at the way you explained it, I am amazed at how ingenious and under appreciated the idea is.
1, I have always loved QR codes. I even practiced how to read them. 2, One of my favorite games ever is an extremely underrated, philosophically-driven story, puzzle game called The Talos Principle. That game uses QR codes as messages on walls for AI to speak to each other. It's an amazing game. I highly recommend it for everyone who enjoys puzzle games. It is similar to Portal 2 and other great puzzle games.
The Talos Principle is one of the best games ever. Playing through the 2nd one now. If you liked TTP, I can't recommend Outer Wilds enough. Don't google it, every little bit of information is a major spoiler. You'll have to trust a random stranger on this one
@@TomisaMaker The Talos Principle is a first-person puzzle game developed by Croteam and published by Devolver Digital, released in December 2014. The game masterfully combines intricate puzzle mechanics with a deep, philosophical narrative that delves into themes of consciousness, existence, and what it means to be human. In the game, you awaken as a sentient android in a mysterious world filled with ancient ruins and advanced technology. Guided by a voice known as Elohim, you're tasked with solving a series of increasingly complex puzzles to prove your worth. As you explore, you'll encounter terminals that reveal fragments of the world's backstory, prompting you to question the reality of your existence and the nature of free will. What's great about The Talos Principle is its seamless blend of challenging gameplay and thought-provoking storytelling. The puzzles are engaging and well-designed, offering a satisfying sense of accomplishment without feeling repetitive. The game encourages players to reflect on profound philosophical questions, making it an underrated gem that leaves a lasting impression long after completion. This game very deeply touched my psyche in a way that few or no other games have. It very strongly resonated with my worldview: there's no obvious god around us, but we're able to explore the universe, create meaning from an absurd universe, and create solutions to problems from life. Perhaps there's a way to transcend it everything: to become greater than a god we can imagine. Even without free will: we and the whole univerae can change for the better. Plus, now there's a second Talos Principle and more DLC and story for the game's universe. There will likely be a third Talos Principle: the writers are already writing the third game. Tldr: The Talos Principle 1 is a philosophical puzzle game about what it means to be a person and if people have free will. It's an amazing and underrated game.
Didn't think of TTP while watching the video, but you're right! What I love most about the implementation of QR codes in TTP1 is the ability to leave pre-composed QR code messages (possibly containing puzzle hints) for your Steam friends, or even your future self once you start a new game. Also, fun fact: if you switch the game to a different language, the QR codes also switch to that language. Meaning, if you try languages that contain lots of non-ASCII letters, such as CJK languages, the QR codes suddenly become a lot denser.
<a href="#" class="seekto" data-time="579">9:39</a> If I had a nicked for how many times a Japenese man with their first name being "Masahiro" wound up creating a revolutionary invention I'd have two nickels, which isn't a lot but it's weird it happened twice.
Why? Is it equally weird that two 19th century English dudes called Charles revolutionised the way we look at the world? Or that two Russian called Nikolay received a Nobel price (one for physics and one for chemistry) within 10 years of each other? Common names are common. Darwin and Babbage, Semenov and Basov if you were wondering
When I did make a quest for a friend, I made a simple 3x3 sliding tile puzzle with 1 piece missing. I then placed the QR code on the other side of the sliding tiles so that you can only read it after you've correctly assembled the picture. I made sure that the single missing tile would not mess up the QR code, but sadly the cuts did mess the code in a much more substantial way. You'd either have to extremely precisely cut the pieces with a machine of sorts to have the tiny cuts that snap perfectly once they fit, or just giveaway the code once the puzzle is solved manually which sadly defeats the point
As a retail worker, it's annoying when the manufacturers put the QR code next to the barcode. The barcode scanner often scans the QR code instead of the barcode, making us losing money.
The scanners that I’ve worked with usually have a configuration option to enable / disable different barcode formats. Mention this to your IT department if you haven’t already - they may be able to disable 2D barcodes and save some headache.
When they started talking about the 177 QR code I had a feeling he was going to be mentioned. Watched the video when it came out, this is a crazy cannon.
<a href="#" class="seekto" data-time="743">12:23</a> I love that you mentioned MattKC in the video, I remember watching that video years ago myself, was very fun to see someone like you mention it
Btw, ASCII only encoded character codes up to 127, not 256 as mentioned (at <a href="#" class="seekto" data-time="673">11:13</a>). Only required 7 bits, not 8.
<a href="#" class="seekto" data-time="1464">24:24</a> Derek: Set each coefficient to be a variable, set the polynomial equal to zero and solve for x=1. Then repeat for x=2 and, if the results are different, you know no error occurred. Me: OK, I'm with you so far. Derek: Do this for all the coefficients and, where the error occurred, the two results are the same. Me: Huh, that's really neat. Derek: ...and they're both equal to the original value. Me: What the hell, that's sorcery. Mathematical dark magic. Get back, numerical Satan!
Ok so i finaly got it, its because when you change each coefficient to a variable individually. When the coeficient u get is not the error, you are working out a solution that is different for both, as thr polynomial is wrong in one of the positions (the number being a 6 in this case) when you set the 6 as a variable the rest kf the polynomial is correct allowing you tk work out the initial value, which by default should be equal coeficient at both x = 1 and x = 2 given the last 2 digets. I hope that helped
<a href="#" class="seekto" data-time="710">11:50</a> This board is 26×26, as stones are placed on intersections, not on squares. The largest standard go board is only 19×19.
The best thing about Ve is the fact that they always take a simple, every day topic or concept... and discuss and it explain it in such a fascinating and amazing way that you can't help wanting to tell everyone about the random facts you just learned.
Weird how Saily is suddenly buying sponsorship deals 3 weeks after their network completely crashed for two weeks for certain countries as a whole and they refuse to give people back their money
I do hate how many places use exclusively QR code though. I want a website shown to me via text, a QR code with no website text under it is annoying. I don't want to have to pull out my phone to scan every code, give me a website to visit.
@@oldhelldog5460 By typing it in when I get home, or going to it on my phone in a protected context, or just seeing what they're showing like a YT video vs a website vs a payment link, etc.
@@oldhelldog5460 a computer or literally any other device that accesses the internet lmao. But also, you can use the internet on a phone without ever interacting with a QR code, just open the internet browser and type words. That's how the internet works, QR codes as the only option just make using the internet far more annoying. I've probably used a QR code a total of less than 100 times in my life, only when they're the only option. Sadly those annoying little things are becoming the only option in a lot of places, much like no headphone jack on phones or less USB ports on laptops.
@@Lerkero this should be the standard, because then people could actually see what website they're trying to access without scanning the thing. They wouldn't even need to scan it at all and could just type it themselves.
I bet almost 99% of people who watch this video dont know how big a role QR codes play, especially in China. Everything is QR codes here. All money is exchanged with QR, whether between friends or while shopping. The only way to join groups or add friends is to scan a QR. Even something as small as picking up delivery, ITS ALL THROUGH QR CODES! 🤯
Incredible video! Love how you present such thorough information on something we use everyday but might not ever think about. Stimulating for all our creativity! And I really appreciate the balance of complexity without over-simplifying it. Some of the best content on RU-vid right now!
<a href="#" class="seekto" data-time="1998">33:18</a> What a great idea. We could use three bytes to encode the color intensity of the red, green and blue channels of an image and then... oh, wait...
You could actually do it with less. Say it's a black and white image, just go with 1 & 0. So one byte gives you 8 pixels of information. It's 1/256 the storage requirements. The 3 bytes per pixel gives 256^3= 2^24= different color options PER pixel. That's certainly a bit much, especially for something simple like a menu. Instead we could do something like RRGGBB, this gives 64 color options. In a single byte. It's 1/3 the storage requirements. If we really want more options we could do something like RRRRRGGG-GGBBBBE. Where green is split between the two bytes and the E can be used as an error correcting digit. This gives 32k color combos. Its 2/3 of the storage requirements and gives us a ton of error correcting digits for free.
Gotta love Veritasium trying to rickroll us if we scanned the QR code at <a href="#" class="seekto" data-time="795">13:15</a>. Didn't work for me though because I memorised the whole QR code (and URL) for Rick Astley's Never gonna give you up video ;)
I just had an epiphany @<a href="#" class="seekto" data-time="865">14:25</a> ‼ - it's like a file format! The QR code is a physical file format! A wrapper for different information forms/types which can be passed, neatly, through the real world when encoded.
I hate using QR codes, but it's not the codes themselves - they're great. It's the implementation. Restaurant menus, unknown targets (possible scams), awkward placement. Sometimes I just want a URL I can remember and visit later, but all you're given is a QR to scan on the spot. Sometimes the phone won't scan it (or needs to be held still too long), or more often, I just don't want to get my phone out.
@@PaulZeroSolisnow that you’ve watched this video all you have to do is spend a month or more to memorize binary and the code direction and you can scan it with your eyes.
