Ogham is an old Irish script made by carving notches into stones. It fell out of use more than a millennium ago - but it's an interesting exception to a linguistics and computer-science rule that I'd never even realised existed. Let's talk about the Ogham Space Mark. Thanks to all the team at the British Museum! You can visit their YouTube channel here: https://www.youtube.com/user/britishmuseum I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook
