Support my Humble Pi filming: get ridiculous perks. https://www.kickstarter.com/projects/standupmaths/matt-parkers-humble-pi-stand-up-show-filming See the filming happen in person! Thursday 21 April 2022 at the Bloomsbury Theatre in London. https://www.ucl.ac.uk/culture/whats-on/matt-parker Original blog post about the book prices by Michael Eisen of the Eisen Lab, University of California, Berkeley. https://www.michaeleisen.org/blog/?p=358 Wikipedia is a good place to start reading about the 2010 flash crash. https://en.wikipedia.org/wiki/2010_flash_crash Or read my book Humble Pi, obvs. https://mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback Thanks to all of my Patreon supporters who mean I can mess around with animated videos like this. They are not economical to make otherwise. You too can help support me: https://www.patreon.com/standupmaths CORRECTIONS - None yet, let me know if you spot anything. Animations and editing by William Marler http://wmad.co.uk/ Music by Howard Carter Voice work by Gemma Arrowsmith and Tom Crowley Illustrations by Vicky Neville Writing and shameless plugging by Matt Parker Additional filming by Alex Genn-Bash Design by Simon Wright and Adam Robinson MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/ US book: https://www.penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker/ UK book: https://mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback