Mathematical greatness can strike at any time - even on the train between Oxford and London. Marcus is the Simonyi Professor for the Public Understanding of Science at Oxford University - https://www.simonyi.ox.ac.uk Marcus' author page on Amazon - https://amzn.to/3eJNd1Z I is a Strange Loop - book - https://amzn.to/3eJNd1Z I is a Strange Loop - performance on YouTube - https://www.youtube.com/watch?v=xEORIj1Ecug This episode was supported by G-Research, a world-leading quantitative finance research firm, hiring the brightest minds to tackle the biggest questions in finance - learn more at gresearch.co.uk/numberphile/ - https://www.gresearch.co.uk/numberphile/ You can support Numberphile on Patreon - https://www.patreon.com/numberphile) like these people - https://www.numberphile.com/patrons With thanks to MSRI - https://www.msri.org Podcast by Brady Haran - https://www.bradyharanblog.com With thanks to GWR - https://www.gwr.com - for the Oxford-London rail footage used in the YouTube version of this podcast - https://youtu.be/PVSkzNOXG1k Additional train footage courtesy of Don Coffey - https://www.youtube.com/channel/UC8LH7xMAyCSqpClAvTHwJRw - whose video work is supporting Samaritans - https://www.samaritans.org/donate-now/