Radio Killed the

In 1895 on Roundworld, the inventor Guglielmo Marconi invented the wireless telegraph, which used radio waves—a form of electromagnetic radiation that is outside the visible spectrum—to transmit messages from a sending operator to a radio receiver. But, like the invention of bread*, few truly good wheezes are only thought of once, and so in the early 2000s UC on Discworld, Liam Macaroni invented a similar device that used a different form of electromagnetic radiation: octarine. And, due to the preponderance of narrativium on Discworld, radio got around to audio transmission, rather than being confined to the old dots and dashes routine, quite a bit more promptly than it did on Roundworld.*And brewing.