Routers carry the traffic of the internet, we talk to Dr Richard Mortier about how they work and what happened to YouTube when a government censorship exercise went wrong. IP Addresses: • IP Addresses and the Internet - Computerphile Floating Point Numbers: • Floating Point Numbers - Computerphile The VR Cave: • The Virtual Reality Cave - Computerphile Busy Beaver Turing Machines: • Busy Beaver Turing Machines - Computerphile nb: the prefixes that Dr Mortier did in his head should actually have been 128.243.128/24 and 128.243.0/24 / computerphile / computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels