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What Happens When Maths Goes Wrong? – with Matt Parker



The Royal Institution

Most of the time, the maths in our everyday lives works quietly behind the scenes, until someone forgets to carry a ‘1’ and a bridge collapses or a plane drops out of the sky.
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Matt Parker is a stand-up comedian and mathematician. He appears regularly on TV and online: as well as being a presenter on the Discovery Channel. His YouTube videos have been viewed over 37 million times. Previously a high-school mathematics teacher, Matt visits schools to talk to students about maths as part of Think Maths and he is involved in the Maths Inspiration shows. In his remaining free time, Matt wrote the books Things To Make and Do in the Fourth Dimension and Humble Pi: A Comedy of Maths Errors. He is also the Public Engagement in Mathematics Fellow at Queen Mary University of London.

This talk was filmed in the Ri on 1 March 2019.


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40 thoughts on “What Happens When Maths Goes Wrong? – with Matt Parker
  1. This is my favourite Matt Parker video because not only is it the length of a feature film, but it has the plot twists of one too.

  2. boring level increasing, nerd level rising, aussie accent not-withstanding (you almost won me- Aussie in England), resonant frequency yawn, switch off.

  3. That it works or not is definitely important to the artistic side of the design. How could anyone say otherwise. Little things like the cogs this are immensely important in art and you can appreciate it when it is done correctly in any context, or more importantly when it is done incorrectly for a purpose.

  4. This is so strange. I had no intention of watching this video. But when I found it I was interested in the math aspect. Last night I was in bed, and somehow I was thinking about how people are so certain of the truth, yet we always ask if it will be heads or tails, when in reality it has another option. So I was a bit alarmed to see it addressed in less than 24 hours.

  5. Warning – SPOILER ALERT. When the second spin came up “Probability” I knew the the probability of the third spin coming up “Probability” was 100%. I based that knowledge on the fact that every time Matt spun the wheel he did so counter clockwise but when the audience member spun the wheel they did so clockwise. I figured the wheel was rigged to stop on “Probability” when spun clockwise. I was right about the wheel landing on “Probability” but wrong about the method of cheating. 😉

  6. 9 months in, I'm glad to see I'm not the only one who've noticed the embedded maths gone wrong in this video – a few have noticed the bit at 01:51 about selling more than the 50% least sold books. 98 books selling a million copies and 2 books selling 10,000 copies would make your sale of 980,200 copies average – but selling more than just the bottom 2% of the other books. Median, teach, MEDIAN.

  7. I have to admit, I saw the name and thumbnail and thought he was one of the creators of South Park. Until I realised, I was thinking of Matt Stone and Trey Parker.

  8. at 15:30… Someone decided to leave his car…. That was the bridge designer. He had to leave his dog behind because it was terrified and he could not get it out of the car 🙁

  9. The example of 50/50 possibility of getting it right without knowing reminds me how any time I see people around implementing Chinese or Japanese characters as decorations on their walls, clothes, accessories etc. they in like 100% of cases get them mirrored and I can't wrap my head around it, where's my 50% of getting it right, it makes me go crazy.

  10. I've kind of had one of those photo moments happen to me.

    When I was 10, my mother, my brother and I went to a place called Kemer in Turkey for a couple of weeks. It was a really good vacation and next year we decided to go to Turkey again. We were looking at possible cities to go to in a catalogue, and as we came upon Kemer we stopped to reminisce a bit and looked at the aerial photo… and noticed "Hey, the hotel the picked for this town looks a lot like the one we stayed in… Actually, it's the same one! And look at that, those three people you can see at a table look like a woman and two boys. They could be us. Actually, what clothes were you wearing? And the hair colors match. And that's our table! THAT'S US!!" So the same people who had their picture taken unawares were the ones who the year after sat together and saw themselves.

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