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
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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 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

How Machines Learn

How do all the algorithms around us learn to do their jobs? **OMG PLUSHIE BOTS!!**: https://standard.tv/collections/cgp-grey/products/cgp-grey-sorterbot-5000-plush Bot Wallpapers on Patreon: https://www.patreon.com/posts/15959388 Footnote: https://www.youtube.com/watch?v=wvWpdrfoEv0 Podcasts: https://www.youtube.com/user/HelloInternetPodcast https://www.youtube.com/channel/UCqoy014xOu7ICwgLWHd9BzQ Thank you to my supporters on Patreon: James Bissonette, James Gill, Cas Eliëns, Jeremy Banks, Thomas J Miller Jr MD, Jaclyn Cauley, David F Watson, Jay Edwards, Tianyu Ge, Michael Cao, Caron Hideg, Andrea Di Biagio, Andrey Chursin, Christopher Anthony, Richard Comish, Stephen W. Carson, JoJo Chehebar, Mark Govea, John Buchan, Donal Botkin, Bob Kunz https://www.patreon.com/cgpgrey How neural networks really work with the real linear algebra: https://www.youtube.com/watch?v=aircAruvnKk Music by: http://www.davidreesmusic.com

Why Tom Couldn't Show You The World's Largest Artificial Sun

Tom saw something very impressive in person. Here's why it didn't look anywhere near as impressive on camera. Also hand rubbing. MATT: http://youtube.com/unnamedculprit | TOM: http://youtube.com/TomScottGo Synlight – The World's Largest Artificial Sun - http://www.dlr.de/dlr/en/desktopdefault.aspx/tabid-10080/150_read-21807/ Wendelstein 7X (An experimental stellarator nuclear fusion reactor) - https://www.ipp.mpg.de/w7x Neckarwestheim and the End Of The World: Citation Needed 1x06 - https://www.youtube.com/watch?v=g1KTl176Mww

Wana Decrypt0r (Wanacry Ransomware) - Computerphile

$300 or your files are toast: Dr Pound takes a look at the latest ransomware to be doing the rounds. How Wana Decrypt0r encrypts files: https://youtu.be/pLluFxHrc30 Microsoft Blog: http://bit.ly/Computerphile-Wana_MS Professor Ross Anderson's blog: http://bit.ly/Computerphile-Wana_Ross MalwareTech's blog: http://bit.ly/Computerphile-Wana_Mal End to End Encryption: https://youtu.be/jkV1KEJGKRA Internet of Things Problems: https://youtu.be/PLiE0Nr8VOE http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

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/

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!

Tom Scott vs Irving Finkel: The Royal Game of Ur | PLAYTHROUGH | International Tabletop Day 2017

YouTuber Tom Scott has flown drones through lightning, he’s taken on the first human-powered theme park, he’s even visited Penistone. But he’s never taken on a British Museum curator in the world’s oldest playable board game… UNTIL NOW! For International Tabletop Day 2017, Tom Scott was challenged by British Museum Curator Irving Finkel to a round of the oldest playable board game in the world – The Royal Game of Ur – a game whose rules were rediscovered and deciphered by Irving himself. Interested in other mysterious cuneiform tablets deciphered by Irving? Check out his book 'The Ark before Noah' to find...

The Greater Good - Mind Field S2 (Ep 1)

Would you reroute a train to run over one person to prevent it from running over five others? In the classic “Trolley Problem” survey, most people say they would. But I wanted to test what people would actually do in a real-life situation. In the world’s first realistic simulation of this controversial moral dilemma, unsuspecting subjects will be forced to make what they believe is a life-or-death decision. Partner Rating: TV14 Available with YouTube Premium - https://www.youtube.com/premium/originals. To see if Premium is available in your country, click here: https://goo.gl/A3HtfP

People See the Double-slit Experiment for the First Time

I have made a follow-up video to clarify some flaws in this explainer https://www.youtube.com/watch?v=yotBpxXiivA Quantum physics is weird. I hope this video makes you interested to read more about the experiment https://en.m.wikipedia.org/wiki/Double-slit_experiment Big thanks to my friends for being part of this video: Caitie Browne: https://www.youtube.com/user/TheCaitieDiaries Matt Beat: https://www.youtube.com/user/iammrbeat Victor Osinga: https://www.youtube.com/channel/UCen2jxwXGgrbF5vVDLQU0IA and second channel... https://www.youtube.com/channel/UC1d_o4DSOzPYn_XFGjJTbFQ Jack Hendy (my brother): https://www.youtube.com/channel/UCuE39Mrrup_pfLUZKs3xPZg Willie Rates: https://www.youtube.com/user/tobirates Special mention to Kevin Li who's footage was lost to unfortunate circumstances... https://www.youtube.com/user/JustKevYTP The base footage is from Dr Quantum - Double-slit experiment, taken from https://www.youtube.com/watch?v=DfPeprQ7oGc. The clip is originally from "What The Bleep Do We Know!?: Down The Rabbit Hole". A disclaimer is that this organisation...

Single Point of Failure: The (Fictional) Day Google Forgot To Check Passwords

http://tomscott.com - @tomscott - I spin a (fictional) tale of the day that Google accidentally opened everything. Performed at GeekyConf, with thanks to Betsy Weber and Natalie Downe on camera.

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

14 Minutes, 47 Questions

With 14 mins left in the camera, we asked twitter for questions. MATT: http://youtube.com/unnamedculprit | TOM: http://youtube.com/TomScottGo Why Does Tom Always Wear Red T-Shirts? https://www.youtube.com/watch?v=p4SoSBo_nsI Containing the Worst Nuclear Disaster in History: Chernobyl's New Confinement Structure https://www.youtube.com/watch?v=vK8ykPmtRyg Real Life Emoji Keyboard https://www.youtube.com/watch?v=3AtBE9BOvvk FAQs What kit do you use? Short answer: Røde NTG2, Roland R44, Sony RX100ii, GoPro 4 The Kit List: https://www.youtube.com/watch?v=wNIMMgcifqs What do you use to edit? Short answer: Adobe Creative Suite. Editing: Why Game On & Citation Needed Take So Long: https://www.youtube.com/watch?v=LcUoVZwLUOE

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...

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 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

Why Electronic Voting is a BAD Idea - Computerphile

Voting is centuries old, why can't we move with the times and use our phones, tablets and computers? Tom Scott lays out why e-voting is such a bad idea. 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. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

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.

A VFX Breakdown, Obscure References, and Ducklings

Tom spent a lot of time in Adobe After Effects to make that video, and for some reason, he chose to do a load of effects in this behind the scenes video too! MATT: http://youtube.com/unnamedculprit | TOM: http://youtube.com/TomScottGo Tom's original video Why The YouTube Algorithm Will Always Be A Mystery: https://www.youtube.com/watch?v=BSpAWkQLlgM HEYYEYAAEYAAAEYAEYAA: https://www.youtube.com/watch?v=ZZ5LpwO-An4 AzureDiamond reference: http://bash.org/?244321 AlphaGo: https://deepmind.com/research/alphago/ The Shamen - Ebenezer Goode: https://www.youtube.com/watch?v=YFJdUJg4wOk Pulp - Sorted For Es and Whizz: https://www.youtube.com/watch?v=DikWW4pOehk Elton John - Someday Out of the Blue: https://www.youtube.com/watch?v=0Dp22KRD5zM

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

Ten Illegal Things To Do In London

A quick and dirty video from Tom (http://tomscott.com - @tomscott) and Matt (http://mattg.co.uk - @unnamedculprit) - ten illegal things to do in London. Yes, these are all properly illegal: you can see our references at http://tomscott.com/law/

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...

ᑖᒻ ᔅᑳᑦ and ᖃᓂᐅᔮᖅᐸᐃᑦ

Inuktitut syllabics are brilliant. A writing system that's not an alphabet, but something really clever: an abugida, one designed from scratch for a language very unlike anything European. [Pull down the description!] Context and history: https://www.noslangues-ourlanguages.gc.ca/collaborateurs-contributors/articles/inuk-eng.html https://thediscoverblog.com/2015/06/11/aboriginal-syllabic-scripts/ I'm here because of Chris Hadfield's Generator Arctic - go check out everyone else who was on the trip, and have a look at tickets for their show at Massey Hall, Toronto, on November 12th! http://generatorevent.com Thanks to Kataisee Attagutsiak (ᑲᑕᐃᓯ ᐊᑕᒍᑦᓯᐊᖅ) for proofreading this script! She helped put Inuktitut into Unicode, so she's something of a language hero. The fellow travellers at the end are Norm and Joey...

AI YouTube Comments - Computerphile

Generating YouTube comments with a neural network trained on YouTube comments. What could possibly go wrong? Dr Mike Pound replied to our comment... EXTRA BITS: https://youtu.be/PpYJcrNCP3U Neural Networks & Deep Learning: https://www.youtube.com/playlist?list=PLzH6n4zXuckoezZuZPnXXbvN-9jMFV0qh Andrej Karpathy Blog post mentioned by Mike: http://bit.ly/C_Blog_RNN Code that Mike used to create this: http://bit.ly/C_RNN_Code http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

What Is Sea Level, Anyway?

In Calipatria, California, the town is below sea level -- but their flag pole isn't. But what does "sea level" mean? Is it just theory, or is there more behind it? 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