Professor Brailsford has been toiling away on a faithful recreation of Unix co-creator Dennis Ritchie's unsubmitted PhD thesis. The Computer History Museum material on Dennis's lost thesis is at: https://computerhistory.org/blog/discovering-dennis-ritchies-lost-dissertation/ The Ritchie family's Web site about the devices (hardware and software) that Dennis used to create his thesis is at: https://dmrthesis.net/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com/