Uploaded January 2020 | Updated September 2026, 2 weeks ago

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Pre-order the US edition of Humble Pi now!
bit.ly/humblepi

If you forward me a confirmation email of your pre-order I will post the 143 numbered pages to the first 143 people and the remaining 18 pages to a random selection of people who emailed within one week of this video going online. All pages will be signed by me. (Only open to people who live in mainland USA. Sorry.)

Download the two documents I was waving around:

Anthropometry of Air Force Flying Personnel (1950)
dropbox.com/s/44ob78otovjohpc/Anthropometry%20of%20Air%20Force%20Flying%20Personnel%20%281950%29.pdf?dl=0

The "Average Man"?
dropbox.com/s/bsedsqvgbohy5wg/The%20%22Average%20Man%22%3F.pdf?dl=0

Here is Caroline Criado Perez's book Invisible Women.
amazon.com/Invisible-Women-Data-World-Designed/dp/1419729071

Sorry, Think Maths have not made any teacher resources for this video, but check out their resources for all my other videos here: think-maths.co.uk/standupmaths-videos

CORRECTIONS
- None yet, let me know if you spot any mistakes!

Thanks again, as always, for Jane Street being my principal sponsor.
janestreet.com

Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:
Stephen Hart
BeeGee
Daniel DeJarnatt
James
Matt
Claire Greenhalgh

Support my channel and I can make more maths videos:
patreon.com/standupmaths

Filming by Matt Parker
Editing by Alex Genn-Bash
Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
Maths book: wwwh.umble-pi.com
Nerdy maths toys: mathsgear.co.uk