Uploaded April 2020 | Updated September 2026, 2 weeks ago
UPDATE: I’m hearing reports of calendar apps crashing quite severely. Please only experiment on non-vital apps as you could hypothetically lose data stored in them! But apparently if the app crashes and restarts don’t fix it: a forced restart will.
Proceed with caution, at your own risk, and report any findings!
Buy a physical book from Waterstones! bit.ly/humblepi_waterstones
ebook on Amazon: amazon.com/s?k=humble+pi
Audiobook on Audible: audible.co.uk/pd/Humble-Pi-Audiobook/0241375509
Huge thanks to Nick Day and Ken Taylor who emailed me about this bug. If you find anything out, or know someone who might know, email me: matt@standupmaths.com
If you want to read the part of my book about this, here it is. (Don't tell anyone I let you have it for free.)
dropbox.com/s/ccloc2ql091l1v5/HumblePi-calenduh.pdf?dl=0
This is the video of me talking about the Boeing 787 Dreamliner and the Los Angeles Air Traffic Control Route Center problems.
youtube.com/watch?v=HYgqvapH7ak
2^52 microseconds before 1 January 2001
wolframalpha.com/input/?i=2%5E52+microseconds+before+1+January+2001
(yes, yes, it is technically off by a microsecond)
CFAbsoluteTime
Type used to represent a specific point in time relative to the absolute reference date of 1 Jan 2001 00:00:00 GMT
developer.apple.com/documentation/corefoundation/cfabsolutetime
Double-precision floating-point format on wikipedia.
en.wikipedia.org/wiki/Double-precision_floating-point_format
CORRECTIONS
- Nothing yet. Let me know if you spot anything!
Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:
Toby O'Neil
Nate Brown
Jordan Scales
Matthew Holland
Philippe von Bergen
Glenn Watson
Kevin Mannon
David Lake
Lucas Werkmeister
Jan Strohbeck
Support my channel and I can make more videos:
patreon.com/standupmaths
Filming and editing by Matt Parker
Music by Howard Carter
Design by Simon Wright
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/products/5b9fa76f230ffa140094dc43
Nerdy maths toys: mathsgear.co.uk
UPDATE: I’m hearing reports of calendar apps crashing quite severely. Please only experiment on non-vital apps as you could hypothetically lose data stored in them! But apparently if the app crashes and restarts don’t fix it: a forced restart will.
Proceed with caution, at your own risk, and report any findings!
Buy a physical book from Waterstones! bit.ly/humblepi_waterstones
ebook on Amazon: amazon.com/s?k=humble+pi
Audiobook on Audible: audible.co.uk/pd/Humble-Pi-Audiobook/0241375509
Huge thanks to Nick Day and Ken Taylor who emailed me about this bug. If you find anything out, or know someone who might know, email me: matt@standupmaths.com
If you want to read the part of my book about this, here it is. (Don't tell anyone I let you have it for free.)
dropbox.com/s/ccloc2ql091l1v5/HumblePi-calenduh.pdf?dl=0
This is the video of me talking about the Boeing 787 Dreamliner and the Los Angeles Air Traffic Control Route Center problems.
youtube.com/watch?v=HYgqvapH7ak
2^52 microseconds before 1 January 2001
wolframalpha.com/input/?i=2%5E52+microseconds+before+1+January+2001
(yes, yes, it is technically off by a microsecond)
CFAbsoluteTime
Type used to represent a specific point in time relative to the absolute reference date of 1 Jan 2001 00:00:00 GMT
developer.apple.com/documentation/corefoundation/cfabsolutetime
Double-precision floating-point format on wikipedia.
en.wikipedia.org/wiki/Double-precision_floating-point_format
CORRECTIONS
- Nothing yet. Let me know if you spot anything!
Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:
Toby O'Neil
Nate Brown
Jordan Scales
Matthew Holland
Philippe von Bergen
Glenn Watson
Kevin Mannon
David Lake
Lucas Werkmeister
Jan Strohbeck
Support my channel and I can make more videos:
patreon.com/standupmaths
Filming and editing by Matt Parker
Music by Howard Carter
Design by Simon Wright
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/products/5b9fa76f230ffa140094dc43
Nerdy maths toys: mathsgear.co.uk
