The Parker Machine: it's 80% accurate.

Ri Christmas Lectures thanks to:

Directed by David Coleman, produced by Laura Voak.

Bonus footage filmed and edited by Matt Parker

CORRECTIONS
- Nothing yet. Let me know if you spot anything! (Although it is too late to change the TV show.)
- Update: FINE, the title is now “Parker Machine”.

Thanks to my Patreon supports who make what I do possible. Support my channel and I can make more videos:

MATT PARKER: Stand-up Mathematician

[komurmaldeb]

I was half expecting a machine that would label all the presents as 'not a phone'. I mean, you could bump up your accuracy to 95% with that!

[AmGroot]

I would like to reiterate that this machine is 80% accurate.

[TheAtb]

4:32 My machine *slaps roof* is 80% accurate.

[Kinglink]

I came for Matt Parker and his machine, but getting a bonus of Hannah Fry as well is like my own perfect Christmas Present.

[trickytreyperfected]

Don't take 50% of the credit. Take 80% of the credit.

[samstudios]

I want ‘It’s 80% accurate’ merch. And you only get sent the right merch 80% of the time.

[praveenb]

I played the video 4 to 5 times just to see Matt's expression each time he repeated, "80% accurate!". He managed to vary his expression in subtle ways each time, not to mention the complacent little nod after each iteration.

[XHappyKillerX]

I can already see people providing 80% accurate solutions to the next Matt Parker's Math Puzzle.

Jokes aside though, what a neat way to explain this at first sight unintuitive part of probability theory!

[DeclanMBrennan]

Never have I seen Bayes theorem explained so simply and with such fun. Call me a skeptic but I suspect the 5 mobile phones were fake news - got to watch those budgets.

[johnchessant]

I like the part where he says the machine is 80% accurate.

[KuraIthys]

Well, I mean, the machine improved the girl's chances of finding a smartphone by 247.8%, so it wasn't a total loss...
Or something. ;p

[mattomanx]

Parker Salesman:
*slaps top of machine*
This bad boy is 80% accurate

[anthonyflanders]

Ahh so it’s a Parker machine. This comment looks stupid since he changed the title lol.

[dyrkbsol]

Matt's embracing the true Parker spirit

[annaarkless]

that poor child. imagine getting hyped at an 80% chance of getting a phone only to have it destroyed

[markiliff]

I watched all 3 progs when first broadcast, and the 80% accurate machine struck me then as an absolute highlight of brilliant & clear explanation. Bravo, both

[iAmWaitForItAsk]

It's still a bit unclear, how accurate is the machine?

[xdwlcqv]

Please stop making things that sort of work or else the word "Parker" will be everywhere

[joshhickman]

This has got to be near-optimal for children's education. You've got 3 hours -- can we get 6 hours * 5 days * 40 weeks * 12 years - 3 hours = 14397 more, if we all work together?

[reydien]

another less-mentioned but equally important result of this sort of error: one of the positives ended up on the floor. In the video that means a smartphone, but with the current events that means a contagious case of the human malware that didn't get caught by screening. Testing helps, but is part of the equation, not the entire solution.