Uploaded February 2025 | Updated September 2026, 2 weeks ago

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Sorry everyone: STEMcon was just cancelled by the organisers. I’m gutted, and sorry we can’t hang out on the ocean.

Boundary Stones of the District of Columbia boundarystones.org

Rectangular States and Kinky Borders mathtourist.blogspot.com/2007/08/rectangular-states-and-kinky-borders.html?m=1

"Chart showing the original boundary milestones of the District of Columbia." Fred E. Woodward, 1906. Geography and Map Division, Library of Congress. blogs.loc.gov/maps/2017/05/modest-monuments-the-district-of-columbia-boundary-stones

Huge thanks to my Patreon supporters. They be there and be square. patreon.com/standupmaths

CORRECTIONS
- Thanks to everyone who spotted I say 100 square metres when I definitely mean 100 square miles.

Filming by Truman Hanks
Editing by Gus Melton
Written and performed by Matt Parker
Additional material by Truman Hanks and Nicole Jacobus
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Additional technical support by Adam Fineberg and David Benji Weiner

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com

PS The Smithsonian video is about a calculator prototype they have in their archives. It's very exciting.