BBC – “On 29 October 1969, two scientists established a connection between computers some 350 miles away and started typing a message. Halfway through, it crashed. They sat down with the BBC 55 years later. At the height of the Cold War, Charley Kline and Bill Duvall were two bright-eyed engineers on the front lines of one of technology’s most ambitious experiments. Kline, a 21-year-old graduate student at the University of California, Los Angeles (UCLA), and Duvall, a 29-year-old systems programmer at Stanford Research Institute (SRI), were working on a system called Arpanet, short for the Advanced Research Projects Agency Network. Funded by the US Department of Defense, the project aimed to create a network that could directly share data without relying on telephone lines. Instead, this system used a method of data delivery called “packet switching” that would later form the basis for the modern internet. It was the first test of a technology that would change almost every facet of human life. But before it could work, you had to log in. Kline sat at his keyboard between the lime-green walls of UCLA’s Boelter Hall Room 3420, prepared to connect with Duvall, who was working a computer halfway across the state of California. But Kline didn’t even make it all the way through the word “L-O-G-I-N” before Duvall told him over the phone that his system crashed. Thanks to that error, the first “message” that Kline sent Duvall on that autumn day in 1969 was simply the letters “L-O”…”