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Seizoen 2020
2020x1
Why My Teenage Code Was Terrible: Sorting Algorithms and Big O Notation
Episode overview
Uitzenddatum
Jan 06, 2020
When I was a teenager, I wrote some terrible code. Here's why.
When I was a teenager, I wrote some terrible code. Here's why.
Uitzenddatum
Jan 13, 2020
The 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.
The 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.
Uitzenddatum
Jan 20, 2020
"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.
"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.
Uitzenddatum
Jan 27, 2020
Schengen 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
.. show full overview
Schengen 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.
Uitzenddatum
Feb 03, 2020
INT, BOOLEAN, STRING and FLOAT: these are the things that data is made of.
INT, BOOLEAN, STRING and FLOAT: these are the things that data is made of.
Uitzenddatum
Feb 10, 2020
About 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.
About 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.
2020x7
The Sentences Computers Can't Understand, But Humans Can
Episode overview
Uitzenddatum
Feb 17, 2020
The Winograd schema is a language test for intelligent computers. So far, they're not doing well.
The Winograd schema is a language test for intelligent computers. So far, they're not doing well.
Uitzenddatum
Feb 24, 2020
From 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?
From 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?
Uitzenddatum
Mrt 02, 2020
Lasers travel at the speed of light. You can't stop one in mid-air like Kylo Ren. Except: we just did. Here's how.
Lasers travel at the speed of light. You can't stop one in mid-air like Kylo Ren. Except: we just did. Here's how.
Uitzenddatum
Mrt 09, 2020
Coca-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.
Coca-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.
2020x11
This billion-euro nuclear reactor was never switched on
Episode overview
Uitzenddatum
Mrt 16, 2020
Zwentendorf 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.
Zwentendorf 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.
2020x12
YouTube's copyright system isn't broken. The world's is.
Episode overview
Uitzenddatum
Mrt 23, 2020
No copyright infringement intended.
No copyright infringement intended.
Uitzenddatum
Mrt 30, 2020
Dark scenes in television, YouTube, and streaming platforms all look pixelated and blocky. Here's why.
Dark scenes in television, YouTube, and streaming platforms all look pixelated and blocky. Here's why.
Uitzenddatum
Apr 06, 2020
The 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.
The 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.
Uitzenddatum
Apr 13, 2020
There 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
.. show full overview
There 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...
Uitzenddatum
Apr 20, 2020
The short answer is "backwards compatibility". The long answer is... well, it's the rest of this video.
The short answer is "backwards compatibility". The long answer is... well, it's the rest of this video.
Uitzenddatum
Apr 27, 2020
UPDATE: The crossroads has now been fixed!
Ipley Cross, in the middle of the New Forest, is one of the most dangerous road junctions in Britain. Why?
UPDATE: The crossroads has now been fixed!
Ipley Cross, in the middle of the New Forest, is one of the most dangerous road junctions in Britain. Why?
Uitzenddatum
Mei 04, 2020
Gricean 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.
Gricean 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.
Uitzenddatum
Mei 11, 2020
All about Hilbert's Decision Problem, Turing's solution, and a machine that vanishes in a puff of logic.
All about Hilbert's Decision Problem, Turing's solution, and a machine that vanishes in a puff of logic.
Uitzenddatum
Mei 18, 2020
This isn't "the way they were meant to be seen".
This isn't "the way they were meant to be seen".
Uitzenddatum
Mei 25, 2020
"Schwa" is the most common vowel in English. Every English speaker uses it, all the time, but most people have never heard of it.
"Schwa" is the most common vowel in English. Every English speaker uses it, all the time, but most people have never heard of it.
Uitzenddatum
Jun 01, 2020
When 'undo' won't do.
When 'undo' won't do.
Uitzenddatum
Jun 08, 2020
[UPDATE: This video has an important update! As of February 2022, the deadline for paths has been cancelled. The mapping still continues, and there's still a plan to have a definitive
.. show full overview
[UPDATE: This video has an important update! As of February 2022, the deadline for paths has been cancelled. The mapping still continues, and there's still a plan to have a definitive map, but old rights of way will no longer be wiped
The 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?
Uitzenddatum
Jun 15, 2020
In 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...
In 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...
2020x25
I Asked 64,182 People About “Jingle Bells, Batman Smells”. Here's What I Found Out.
Episode overview
Uitzenddatum
Jun 22, 2020
Thanks to Jack from Jacksfilms on piano:
/ jacksfilms • And thanks to everyone who answered! Sources and a data download are in the description.
Thanks to Jack from Jacksfilms on piano:
/ jacksfilms • And thanks to everyone who answered! Sources and a data download are in the description.
Uitzenddatum
Jun 29, 2020
Green screen looks terrible sometimes. Here's why.
Green screen looks terrible sometimes. Here's why.
Uitzenddatum
Jul 06, 2020
Old 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
.. show full overview
Old 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.
2020x28
A Million Dollars vs A Billion Dollars, Visualized: A Road Trip
Episode overview
Uitzenddatum
Jul 13, 2020
There 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
.. show full overview
There 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.
Uitzenddatum
Jul 20, 2020
Linby 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.
Linby 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.
Uitzenddatum
Jul 27, 2020
In 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.
In 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.
Uitzenddatum
Aug 03, 2020
The short answer is: "because it'll make things more secure". The long answer involves Ronald Reagan.
The short answer is: "because it'll make things more secure". The long answer involves Ronald Reagan.
Uitzenddatum
Aug 10, 2020
Cornwall 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?
Cornwall 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?
2020x33
DISCONNECTED with Jaiden Animations, Ellen Rose and Hank Green
Episode overview
Uitzenddatum
Aug 13, 2020
I invited Jaiden, Ellen and Hank to play a trivia quiz! The sort of quiz where you can get away with wrong answers... if nobody spots them. And since they couldn't be there in person,
.. show full overview
I invited Jaiden, Ellen and Hank to play a trivia quiz! The sort of quiz where you can get away with wrong answers... if nobody spots them. And since they couldn't be there in person, I've got a massive virtual set. Too many wrong answers, and our players will be Disconnected.
Uitzenddatum
Aug 17, 2020
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?
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?
2020x35
DISCONNECTED with Alec of Technology Connections, Sally Le Page, and Arun from mrwhosetheboss
Episode overview
Uitzenddatum
Aug 20, 2020
Alec, Sally and Arun join me at the top of the virtual tower for a game where it doesn't matter if you're wrong... as long as no-one calls you on it.
Alec, Sally and Arun join me at the top of the virtual tower for a game where it doesn't matter if you're wrong... as long as no-one calls you on it.
Uitzenddatum
Aug 24, 2020
Sooner or later, I was going to get around to this: it's one of the most famous experiments in linguistics. •
Written with Molly Ruhl and Gretchen McCulloch.
Sooner or later, I was going to get around to this: it's one of the most famous experiments in linguistics. •
Written with Molly Ruhl and Gretchen McCulloch.
2020x37
DISCONNECTED with Vanessa from Braincraft, Kati Morton and Jarvis Johnson
Episode overview
Uitzenddatum
Aug 27, 2020
Vanessa, Kati and Jarvis are the final three players on the broadcast tower, playing a quiz where if you bluff well enough, you don't even need to know the answers.
Vanessa, Kati and Jarvis are the final three players on the broadcast tower, playing a quiz where if you bluff well enough, you don't even need to know the answers.
Uitzenddatum
Aug 31, 2020
Silfra, 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
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Silfra, 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.
Uitzenddatum
Sep 03, 2020
The three players who've already won come back to the tower for one final battle. One of them will leave the Champion of Champions: and two will be Disconnected.
The three players who've already won come back to the tower for one final battle. One of them will leave the Champion of Champions: and two will be Disconnected.
Uitzenddatum
Sep 07, 2020
Sometimes, you regret asking a question.
Sometimes, you regret asking a question.
Uitzenddatum
Sep 14, 2020
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
.. show full overview
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.
Uitzenddatum
Sep 21, 2020
The 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
.. show full overview
The 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...
Uitzenddatum
Sep 28, 2020
Featuring binary versus linear search, and non-clustered indexes. Uh, indices. However you want to say it.
Featuring binary versus linear search, and non-clustered indexes. Uh, indices. However you want to say it.
Uitzenddatum
Okt 05, 2020
Happy October. Thanks to Daniel, Tom, and Chloe, their channels are below!
Happy October. Thanks to Daniel, Tom, and Chloe, their channels are below!
Uitzenddatum
Okt 12, 2020
Wunderland Kalkar, near the German-Dutch border, is a family amusement park... inside a nuclear power plant that was never turned on.
Wunderland Kalkar, near the German-Dutch border, is a family amusement park... inside a nuclear power plant that was never turned on.
Uitzenddatum
Okt 19, 2020
Is there a "right" way to pronounce it? And why is it so complicated? •
Written with Molly Ruhl and Gretchen McCulloch.
Is there a "right" way to pronounce it? And why is it so complicated? •
Written with Molly Ruhl and Gretchen McCulloch.
Uitzenddatum
Okt 26, 2020
If you want to sell alcohol in England, you need a license. But the Licensing Act 2003 has some unusual exceptions.
If you want to sell alcohol in England, you need a license. But the Licensing Act 2003 has some unusual exceptions.
Uitzenddatum
Nov 02, 2020
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,
.. show full overview
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.
Uitzenddatum
Nov 09, 2020
Pull down this description for information on all the shows I mention, plus all my references, and some advice if you're looking to subtitle your videos!
Pull down this description for information on all the shows I mention, plus all my references, and some advice if you're looking to subtitle your videos!
Uitzenddatum
Nov 16, 2020
Gravity 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.
Gravity 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.
Uitzenddatum
Nov 23, 2020
Tim Berners-Lee envisioned a "universal information system". What went wrong?
Tim Berners-Lee envisioned a "universal information system". What went wrong?
Uitzenddatum
Nov 30, 2020
The 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
.. show full overview
The 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.
Uitzenddatum
Dec 07, 2020
The answer is, of course, a bit more complicated than you might think. •
Written with Molly Ruhl and Gretchen McCulloch.
The answer is, of course, a bit more complicated than you might think. •
Written with Molly Ruhl and Gretchen McCulloch.
Uitzenddatum
Dec 14, 2020
There 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.
There 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.
Uitzenddatum
Dec 21, 2020
This 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
.. show full overview
This 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.
2020x56
Seizoensfinale
How Weird Is My Audience? I Polled 15,408 People To Find Out
Episode overview
Uitzenddatum
Dec 28, 2020
I asked my audience six questions: some sensible, some ridiculous. I compared their results to the public. And the results were... interesting.
I 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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