Tom Scott

Season 10

A series of educational web videos across a range of topics.

Where to Watch Tom Scott • Season 10

52 Episodes

  • Why My Teenage Code Was Terrible: Sorting Algorithms and Big O Notation
    E1
    Why My Teenage Code Was Terrible: Sorting Algorithms and Big O NotationWhen I was a teenager, I wrote some terrible code. Here's why.
  • How Neurosurgeons Navigate Inside The Brain
    E2
    How Neurosurgeons Navigate Inside The BrainThe brain is a mass of neurons, but some areas are more important than others. How can surgeons navigate inside the brain? How do they know exactly where to operate, and what to do? Alex from Brainbook explains.
  • How To Grow A Martian Salad On Earth
    E3
    How To Grow A Martian Salad On Earth"12kg of Martian soil simulant" is a pretty good guest video pitch. This week, Tom from Aspect Science tries to grow a salad in Martian soil.
  • The bridge that's in two countries at the same time
    E4
    The bridge that's in two countries at the same timeSchengen is a small town in Luxembourg, on the borders with France and Germany. But one of those borders is a little more complicated: the Mosel (or Moselle) river is a condominium, it belongs to both countries at the same time. And thus, so the bridges above it.
  • Why TRUE + TRUE = 2: Data Types
    E5
    Why TRUE + TRUE = 2: Data TypesINT, BOOLEAN, STRING and FLOAT: these are the things that data is made of.
  • The Dutch headwind cycling championships are amazing
    E6
    The Dutch headwind cycling championships are amazingAbout once a year, on the Oosterscheldekering barrier in the south of the Netherlands, there is NK Tegenwindfietsen: a bicycle race cycling into a headwind. This year it was 120km/h: this is why it's so difficult, and also why it's so brilliant.
  • The Sentences Computers Can't Understand, But Humans Can
    E7
    The Sentences Computers Can't Understand, But Humans CanThe Winograd schema is a language test for intelligent computers. So far, they're not doing well.
  • The country where all public transit is free
    E8
    The country where all public transit is freeFrom March 1st 2020, Luxembourg will have free public transit throughout the country: you'll be able to travel on buses, trains, trams, and that one funicular railway without a ticket. It sounds like a good idea: but is it?
  • Stopping A Laser Beam In Mid-Air
    E9
    Stopping A Laser Beam In Mid-AirLasers travel at the speed of light. You can't stop one in mid-air like Kylo Ren. Except: we just did. Here's how.
  • Why you can't buy Dasani water in Britain
    E10
    Why you can't buy Dasani water in BritainCoca-Cola's brand of bottled water, Dasani, was a flop in the UK after the public realised it was just filtered tap water. But the story's a bit more complicated than it might seem.
  • This billion-euro nuclear reactor was never switched on
    E11
    This billion-euro nuclear reactor was never switched onZwentendorf Nuclear Power Plant, in Austria, was ready to go: it just needed starting up. But that never happened, and forty years later, it still sits mothballed. Here's why.
  • YouTube's copyright system isn't broken. The world's is.
    E12
    YouTube's copyright system isn't broken. The world's is.No copyright infringement intended.
  • Why dark video is a terrible mess
    E13
    Why dark video is a terrible messDark scenes in television, YouTube, and streaming platforms all look pixelated and blocky. Here's why.
  • This Video Has (x) Views
    E14
    This Video Has (x) ViewsThe title of this video should change with the times. But nothing lasts forever: here's the story of how I made it work, why it used to be easier to make that work, and how it all ties in to the White Cliffs of Dover and the end of the universe.
  • Abso-b____y-lutely: Expletive Infixation
    E15
    Abso-b____y-lutely: Expletive InfixationThere are rules in the English language that you've probably never been taught, but you know anyway: how to split apart words with "infixes". But you've never been taught it because some of those infixes are words you probably shouldn't use in front of your high school English teachers.
  • Why You Can't Name A File CON In Windows
    E16
    Why You Can't Name A File CON In WindowsThe short answer is "backwards compatibility." The long answer is - well, it's the rest of this video.
  • Why this British crossroads was so dangerous
    E17
    Why this British crossroads was so dangerousIpley Cross, in the middle of the New Forest, is one of the most dangerous road junctions in Britain. Why?
  • The Hidden Rules of Conversation
    E18
    The Hidden Rules of ConversationGricean Maxims are a vital part of how we understand each other: a set of, well, maybe "rules" is a bit strong. They're guidelines that we follow without realising it. And it's the reason that "asbestos-free cereal" sounds suspicious.
  • Are There Problems That Computers Can't Solve?
    E19
    Are There Problems That Computers Can't Solve?All about Hilbert's Decision Problem, Turing's solution, and a machine that vanishes in a puff of logic.
  • Why some remastered music videos look awful
    E20
    Why some remastered music videos look awfulWhen YouTube allowed music labels to "remaster" their original uploads, different videos had very different approaches. Some are in crystal-clear 4K; others are very definitely not. Here's why some of them look terrible.
  • The Most Common Vowel in English
    E21
    The Most Common Vowel in English"Schwa" is the most common vowel in English. Every English speaker uses it, all the time, but most people have never heard of it.
  • The Worst Typo I Ever Made
    E22
    The Worst Typo I Ever MadeWhen 'undo' won't do.
  • How England's Oldest Road Was Nearly Lost Forever
    E23
    How England's Oldest Road Was Nearly Lost ForeverThe Icknield Way, in south-east England, is a road and footpath that's been part of the landscape for millennia. But if parts of it hadn't been legally marked down, then those parts would have become private land, gone forever. Who has the right to walk where?
  • The "first internet bench" probably wasn't
    E24
    The "first internet bench" probably wasn'tIn the Abbey Gardens of Bury St Edmunds, in a quiet corner of a park, sits the World's First Internet Bench. Well, sort of. It's been nearly twenty years, and it's arguable whether it ever did the job in the first place.
  • I Asked 64,182 People About "Jingle Bells, Batman Smells". Here's What I Found Out.
    E25
    I Asked 64,182 People About "Jingle Bells, Batman Smells". Here's What I Found Out.
  • Why You Can Spot Bad Green Screen
    E26
    Why You Can Spot Bad Green ScreenGreen screen looks terrible sometimes. Here's why.
  • The Abandoned Hill With Two Members Of Parliament
    E27
    The Abandoned Hill With Two Members Of ParliamentOld Sarum, in Wiltshire, is a now-desolate hillfort run by English Heritage. But it was once one of the most important sites in southern England: so important that it had two members of Parliament. Then, it became a "rotten borough": and a warning about power.
  • A Million Dollars vs A Billion Dollars, Visualized: A Road Trip
    E28
    A Million Dollars vs A Billion Dollars, Visualized: A Road TripThere are lots of ways to compare a million to a billion, but most of them use volume. And I think that's a mistake, because volume just isn't something the human brain is great at. So instead, here's the difference between a million and a billion, in a more one-dimensional way: distance.
  • The Village That The Luftwaffe Bombed By Mistake
    E29
    The Village That The Luftwaffe Bombed By MistakeLinby is a small village in Nottinghamshire, England. It wouldn't have much strategic value - unless some commander didn't read their map properly. Here's a local legend, with a few questions about it.
  • Britain once forgot how long an inch is
    E30
    Britain once forgot how long an inch isIn 1834, Parliament burned down, and the Standards of Measurement were melted or destroyed. So when there's no agreed-upon standard for length: how do you fix it? Also: how you can still publicly check the length of your sandwich.
  • Why You Should Turn On Two Factor Authentication
    E31
    Why You Should Turn On Two Factor AuthenticationThe short answer is: "because it'll make things more secure".
  • The Part Of Britain That Rises And Falls Twice A Day
    E32
    The Part Of Britain That Rises And Falls Twice A DayCornwall rises and falls by a few centimetres, twice a day. I didn't believe that when I read it. In this video: "ocean tide loading": why, how, and does it actually matter?
  • Is the most northern part of Iceland still there?
    E33
    Is the most northern part of Iceland still there?Kolbeinsey is the most northern part of Iceland, a tiny island that, according to Wikipedia, is due to disappear due to wave erosion "probably around the year 2020". Which raised an obvious question: is it still there?
  • Which Is "Bouba", and Which Is "Kiki"?
    E34
    Which Is "Bouba", and Which Is "Kiki"?Sooner or later, I was going to get around to this: it's one of the most famous experiments in linguistics.
  • Swimming between two continents, debunked
    E35
    Swimming between two continents, debunkedSilfra, in Þingvellir National Park in Iceland, is where the Eurasian and North American continental plates are dividing. It's a crack in the earth where you can snorkel or dive between the continents. Well, sort of. As ever, it's a bit more complicated than that.
  • 1,204,986 Votes Decided: What Is The Best Thing?
    E36
    1,204,986 Votes Decided: What Is The Best Thing?Sometimes, you regret asking a question.
  • Would you swim in power plant wastewater?
    E37
    Would you swim in power plant wastewater?Normally, the answer would be no. But in these very limited circumstances, at Iceland's Blue Lagoon, you can swim in geothermal power plant wastewater, and it's even healthy: although the marketing material doesn't usually mention it. Here's a story about geothermal energy, cheap heat, and how to keep some ducks warm.
  • The tiny monorails that once carried James Bond
    E38
    The tiny monorails that once carried James BondThe Roadmachines Mono-Rail may have been the only truly useful, fit-for-purpose monorail in the world. Of the hundreds that were built, most were never meant for passengers. But they did carry a couple of famous people in their time, including a certain secret agent.
  • How Binary Search Makes Computers Much, Much Faster
    E39
    How Binary Search Makes Computers Much, Much FasterFeaturing binary versus linear search, and non-clustered indexes. Uh, indices. However you want to say it.
  • We Built A Lie-Detector Skeleton From 1927
    E40
    We Built A Lie-Detector Skeleton From 1927Happy October.
  • The theme park inside an old nuclear power plant
    E41
    The theme park inside an old nuclear power plantWunderland Kalkar, near the German-Dutch border, is a family amusement park - inside a nuclear power plant that was never turned on.
  • It's pronounced GIF.
    E42
    It's pronounced GIF.Is there a "right" way to pronounce it? And why is it so complicated?
  • My unlicensed hovercraft bar is technically legal
    E43
    My unlicensed hovercraft bar is technically legalIf you want to sell alcohol in England, you need a license. But the Licensing Act 2003 has some unusual exceptions.
  • If these pumps ever stop, part of Germany floods.
    E44
    If these pumps ever stop, part of Germany floods.The Ruhr Valley, in north-west Germany, is an industrial coal-mining area. And because of that kilometre-deep mining, parts of it have sunk, the drainage patterns have changed: and now, if the pumps of Emschergenossenschaft ever stop, quite a few towns and cities will end up flooded.
  • Five Things You Can't Do On British Television
    E45
    Five Things You Can't Do On British Television
  • I Almost Learned To Fly A Jetpack
    E46
    I Almost Learned To Fly A JetpackGravity Industries make jetpacks. They're not practical. They're not meant for mass use. But they are a lot of fun. They asked if I wanted to try flying one.
  • Why The Web Is Such A Mess
    E47
    Why The Web Is Such A MessTim Berners-Lee envisioned a "universal information system". What went wrong?
  • We walked the most dangerous path in Britain
    E48
    We walked the most dangerous path in BritainThe Broomway is surrounded on both sides by quicksand and deep, sucking mud. It has no markers and no guideposts. And if you mistime your walk, you won't outrun the tide. Oh, and it's in the middle of a Ministry of Defence firing range. But most of the time, if you want to visit Foulness Island, it's the only way.
  • How Many Languages Are There?
    E49
    How Many Languages Are There?The answer is, of course, a bit more complicated than you might think.
  • The never-used road where the BBC crash cars
    E50
    The never-used road where the BBC crash carsThere are lots of disused and never-used roads and bridges in the world. But the Road to Nowhere in Yate, in south-west England, does still sometimes have traffic driving on it. And crashing on it.
  • The Greatest Title Sequence I've Ever Seen
    E51
    The Greatest Title Sequence I've Ever SeenThis is a story about a television title sequence, and about me, as a child, watching it. It's also a warning about how YouTube won't last forever, and it's the reason I'm climbing one particular hill in the Lake District. Merry Christmas, Denis Norden.
  • How Weird Is My Audience? I Polled 15,408 People To Find Out
    E52
    How Weird Is My Audience? I Polled 15,408 People To Find OutI asked my audience six questions: some sensible, some ridiculous. I compared their results to the public. And the results were - interesting.

 

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