Why The YouTube Algorithm Will Always Be A Mystery
Why The YouTube Algorithm Will Always Be A Mystery
Why The YouTube Algorithm Will Always Be A Mystery

Why The YouTube Algorithm Will Always Be A Mystery - Tom Scott

Tom Scott
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Hi, I'm Tom Scott. These are some of the things I've made and done. They'll probably come back to haunt me in a few years' time. (Want to get in touch about anything? Use the "contact me" link below, not YouTube messages!)

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How YouTube Video Stabilization Works

http://tomscott.com - @tomscott - From tracking a point, to analysing pixels, to plotting 3D camera moves: here's how you go from shaky handheld shots to that "gliding through the Matrix" effect. Thanks to Matt Gray for his excellent camera work - he's at http://mattg.co.uk - @unnamedculprit

The Link That Can Crash Chrome: http://a/%%30%30

http://tomscott.com - http://twitter.com/tomscott - In the news today: a link which, when moused over or clicked on, crashes Google Chrome. It's a heck of a bug: but how does it work, and what does it have to do with "null-terminated strings"? TECH DETAILS: https://code.google.com/p/chromium/issues/detail?id=533361

Will YouTube Ever Run Out Of Video IDs?

In the URL of each YouTube video is the 11-character video ID, unique for each video. Can they ever run out? Just how many videos can YouTube handle? To work it out, we need to talk about counting systems, and about something called Base 64. Want to know how the single camera shot was done? "Matt Bought a DJI Osmo and It's Surprisingly Good" is today's video over on the Park Bench: https://www.youtube.com/watch?v=Dyy41yAs8nc I'm at https://tomscott.com/ or on Twitter at http://twitter.com/tomscott or on Facebook at http://facebook.com/tomscott or on Instagram as tomscottgo. Filmed by Matt Gray, who's at http://mattg.co.uk or @unnamedculprit on basically everything everywhere.

Fantastic Features We Don't Have In The English Language

http://tomscott.com - @tomscott - There are lots of interesting features in other languages, some of which English would really benefit from having. I'm going to talk about four of them: time-independence, clusivity, absolute direction, and evidentiality. Also, I've learned from last week: no irritating piano music this time! UNESCO list of endangered languages: http://www.unesco.org/culture/languages-atlas/

Why The Government Shouldn't Break WhatsApp

Encryption backdoors - breaking WhatsApp and iMessage's security to let the government stop Bad Things - sounds like a reasonable idea. Here's why it isn't. A transcript of this video's available here: https://www.facebook.com/notes/tom-scott/why-the-government-shouldnt-break-whatsapp/1378434365572557/ CREDITS: Filmed at the Cambridge Centre for Computing History: http://www.computinghistory.org.uk/ Camera by Tomek: https://www.youtube.com/tomek Thanks to everyone who helped proofread my script! REFERENCES: WhatsApp's privacy protections questioned after terror attack: http://www.bbc.co.uk/news/technology-39405178 WhatsApp must be accessible to authorities, says Amber Rudd: https://www.theguardian.com/technology/2017/mar/26/intelligence-services-access-whatsapp-amber-rudd-westminster-attack-encrypted-messaging UK government renews calls for WhatsApp backdoor after London attack: https://www.theverge.com/2017/3/27/15070744/encryption-whatsapp-backdoor-uk-london-attacks Investigatory Powers Act: http://www.legislation.gov.uk/ukpga/2016/25/contents/enacted India is 'ready to use' Blackberry message intercept system: http://www.bbc.co.uk/news/technology-23265091 Revealed: how US and UK spy agencies defeat internet privacy and security: https://www.theguardian.com/world/2013/sep/05/nsa-gchq-encryption-codes-security Councils...

Why Snow and Confetti Ruin YouTube Video Quality

Your sports team wins. The confetti drops. And suddenly, the video quality falls apart. Why? Let's talk about interframe compression, bitrate, and unnecessary green screen effects. I'm at https://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Instagram as @tomscottgo You might also like: How Green Screen Worked Before Computers: https://www.youtube.com/watch?v=msPCQgRPPjI This uses one Creative Commons by-attribution photo, "Sony Trinitron" by Antífama, available here: http://flic.kr/p/6DBMYn

California City: The Largest City Never Built | Tom Scott Has a Field Day

SUBSCRIBE ►► https://goo.gl/BuQQrm Tom Scott Explains the World ► http://bit.ly/1NG0VRU The Life of a Hot Pepper ► http://bit.ly/1HDO2Fu In the middle of the Mojave desert lies California City, the largest city never built. It is now a vast network of roads carved into the sand for miles and miles with nothing but tumbleweeds and cacti to inhabit them. Tom Scott is a man on a mission to explore interesting places and share them with the world. He explains why this city didn’t grow to fill its vast scope, and how it has evolved over the years into the small, thriving and growing community...

How The Self-Retweeting Tweet Worked: Cross-Site Scripting (XSS) and Twitter

http://tomscott.com - http://twitter.com/tomscott - It should never have happened. Defending against cross-site scripting (XSS) attacks is Web Security 101. And yet, today, there was a self-retweeting tweet that hit a heck of a lot of people - anyone using Tweetdeck, Twitter's "professional" client. How did it work? Time to break down the code. (Remember the old Myspace worms? They worked the same way.) THE SELF-RETWEETING TWEET: https://twitter.com/derGeruhn/status/476764918763749376

2030: Privacy's Dead. What happens next?

http://tomscott.com - http://twitter.com/tomscott - At dConstruct 2014, I spin a tale of the future: not to make a prediction, but to put our current world in perspective. Thanks to all the dConstruct folks at the Brighton Dome: crew, volunteers, and audience!

I Can't Show You How Pink This Pink Is

I can show a brighter pink. I can show a more saturated pink. But I can't show you this pink. Not quite. More about Stuart Semple and his pigments: https://www.culturehustle.com/ [that's his store, we overloaded Stuart's personal web site, http://www.stuartsemple.com, within a few minutes...!] (I reached out to Anish Kapoor's studio twice for comment; I didn't get any response.) Edited by Michelle Martin (@mrsmmartin) I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Snapchat and Instagram as tomscottgo

I Know What You Did Five Minutes Ago

http://tomscott.com - My talk from Ignite London 4 (http://ignitelondon.net): in which I rattle through the online privacy settings of fashionable web services, and leave a surprising message. FAQ: * Is the data really pulled in live from the web? With the exception of the Wikipedia articles, which I summarised in advance, yes. Everything on screen really was live data. * Did you know who was going to appear? No — but the selection process was algorithmic, not random. It was always going to pick someone interesting. As an extra safety net, a few minutes before I went on stage someone else checked who the system...

Why do YouTube views freeze at 301?

This glitch was finally "fixed" in August 2015, but may it live on in our hearts. More links & stuff in full description below ↓↓↓ This video's viewcount in August 2016 - 4.1 million Numberphile pays a visit to YouTube and learns the secret behind one of the website's famous idiosyncrasies - why view counts on new videos often freeze at 301. Subscribe to numberphile for new videos about numbers every week. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile

YouTube Doesn't Know Your Password

http://tomscott.com - @tomscott - A brief introduction to password hashing for the uninitiated -- and why you should never trust a site that emails your password back to you!

Wheels, Bombs, and Perpetual Motion Machines

This is a collaboration with the Royal Institution! Go check out their video here: https://youtu.be/sScrtGdKmho -- Perpetual motion machines are badly named. And impossible. But that hasn't stopped a lot of people trying to build them. Sure, you could try and argue physics: but there's a more common-sense reason why free energy's not coming any time soon. I'm at http://www.tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Instagram and Snapchat as tomscottgo

How To Debunk Perpetual Motion Machines - with Tom Scott

Warning: Contains flashing images. You know those videos showing working perpetual motion machines? They’re fake. Tom Scott helps us explain how to debunk them. Watch his video here: https://youtu.be/EiZU3BvqvP4 Perpetual motion machines are tantalising. Videos of contraptions claiming to have achieved the impossible goal of endless free motion rack up millions of views on YouTube. But they’re not real. Perpetual motion machines violate the fundamental laws of our universe. In this video, we teamed up with YouTuber Tom Scott to provide three simple ways to debunk persistent claims of perpetual motion: a guide to protect you from the bunk. People have been...

British Plugs Are Better Than All Other Plugs, And Here's Why

http://tomscott.com - http://twitter.com/tomscott - ALL THE ELECTRICS I USED WERE UNPLUGGED. DO NOT DO THIS. Yep, I'm going all patriotic again. And while I'm willing to bet that a good number of British folks know the first half of this video, there's one thing about slack in here that I only just learned myself.

Why Hold Music Sounds Worse Now

It's not your imagination; hold music on phones really did sound better in the old days. Here's why, as we talk about old telephone exchanges and audio compression. Thanks to the Milton Keynes Museum, and their Connected Earth gallery: http://www.mkmuseum.org.uk/ - they're also on Twitter as @mkmuseum, and on Facebook: https://www.facebook.com/mkmuseum/ I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Snapchat and Instagram as tomscottgo

The Moonpig Bug: How 3,000,000 Customers' Details Were Exposed

It's been all over the British news today: developer Paul Price found a bug in photo-crap-maker Moonpig's site, one that might have exposed three million users' personal information. Paul's got a great technical post about it at http://ifc0nfig.com/moonpig-vulnerability/ -- but there's no decent non-techie explanation except for the one-paragraph summaries in newspapers. It was a perfect storm of tech incompetence: here's how to avoid doing it yourself.

Smart Meters are worse than you think (UPDATED)

I learned the hard way what's happening with smart meters in Europe. The same type of smart meter they're using here in France has already been deployed in many EU countries. Mostly, we hear only about the negative health effects of wireless smart meters, but the ones here only send data back over the power lines. In short, with a smart meter, you may end up with less juice to power stuff, and more frequent main breaker trips as people exceed their (now reduced) capacity. My vid on Power Factor: https://www.youtube.com/watch?v=9fg96FcDSw4 Credits: A BIG thank you to Wes Marquenie for making me smarter! More...

This Video Is 2D And 3D Simultaneously: the Pulfrich Effect

Hold on tight, because with a stabilised camera shot and a pair of sunglasses, you're about to see a video that works in both 2D and 3D at the same time. The technique's called the Pulfrich Effect, and this is how it works. The BBC's terrible 90s Doctor Who special, Dimensions in Time, can be seen here, complete with its Noel Edmonds-filled framing: https://www.youtube.com/watch?v=NQCeMIQpFBc Camera and sound: Matt Gray / http://mattg.co.uk I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Snapchat and Instagram as tomscottgo

3D Printing Stainless Steel with Giant Robot Arms

At Autodesk's Pier 9 workshop in San Francisco -- and no, this isn't an ad, pull down the description for more! -- there are giant robot arms using welders to 3D print with stainless steel. Which seemed like a good place to talk about programming abstractions, high-level languages, training pendants, and just how safe something like a robot arm needs to be. FULL DISCLOSURE: Autodesk were good enough to cover my travel to San Francisco, but they haven't paid me and they had no control over the script, the content or the final cut! You can see more about Pier 9...

Gender Neutral Pronouns: They're Here, Get Used To Them

http://tomscott.com - @tomscott - Grammatical gender is a silly concept. So I'm about to go against my vow of descriptivism, and risk being run over by the Linguistic Mafia's bus, and say this: it's a silly idea. [The line about "the first sentence of the video" is wrong: it's not actually in the first sentence of the video. I cut that line, and forgot about that second line. Whoops.]

How NOT to Store Passwords! - Computerphile

Security of users' passwords should be at the forefront of every web developer's mind. Tom takes us through the insecure ways in which some websites deal with passwords. Note: At circa 8mins, the animation does not show how the 'salt' is also stored in the database alongside the username. Hashing Algorithms and Security: http://youtu.be/b4b8ktEV4Bg Security of Data on Disk: http://youtu.be/4SSSMi4X_mA More from Tom Scott: http://www.youtube.com/user/enyay and https://twitter.com/tomscott http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Rotary Jails and Accidental Amputations

In Crawfordsville, Indiana, there's a rotary jail: an invention that, with hindsight, should probably never have been built. But it was, here and in other towns across the United States. It might have sounded like a good idea on paper, but in practice, it had a few unfortunate problems... including occasional accidental amputations. More about the Rotary Jail Museum: http://www.rotaryjailmuseum.org/ Edited by Michelle Martin, @mrsmmartin I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Snapchat and Instagram as tomscottgo