In this Motherboard.tv episode, artist Jamie O’Shea from Substitute Materials shows how you can build a telegraph from materials that were readily available 50,000 years ago: “It’s the ultimate salvagepunk experiment, a DIY exploration of what makes innovation possible, and an attempt to prove that the future could happen at any time (even if the world isn’t always ready for it).”
Video: Immaculate Telegraphy: How One Man Built a Telegraph Using Only Stone Age Materials
(Thanks, Zorca, via Submitterator!)