Jane Street’s Hong Kong internship is accepting applications now: Oh look. Still time to sign up for a digital xmas card: (cut off for 2025 is 31 Dec 2025) As well as calculating Pi on the Moon, I'll be back on tour again in the new year: Follow Matt_2 on his channel: @mattparker2?si=eb5xHitNSASmQlyw Huge thanks to my Patreon supporters. My appreciation for them is uncountably infinite. Plus one. CORRECTIONS None yet, let me know if you spot anything! Filming and editing by Alex Genn-Bash Animations by Willow Marler Written and performed by Matt Parker Produced by Nicole Jacobus Music by Howard Carter Design by Simon Wright and Adam Robinson MATT PARKER: Stand-up Mathematician Website: