A web app that works out how many seconds ago something happened. How hard can coding that be? Tom Scott explains how time twists and turns like a twisty-turny thing. It's not to be trifled with! A Universe of Triangles: • A Universe of Triangles - Computerphile LZ Compression in Text: • Elegant Compression in Text (The LZ 77 Met... Characters, Symbols and the Unicode Miracle: • Characters, Symbols and the Unicode Miracl... More from Tom Scott: / enyay and / tomscott / computerphile / computer_phile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels