The Birth of the Internet

The short analysis

Few technologies feel as inevitable in retrospect as the internet, yet its birth was anything but predetermined. What eventually became a global public medium began as a modest experiment in resilient data communication, driven by researchers who wanted computers at different institutions to share information without relying on a single vulnerable connection point. The core insight behind packet switching, developed in the early 1960s by researchers working independently on both sides of the Atlantic, was that messages could be broken into discrete chunks, routed separately across a network, and reassembled at their destination. This made the system far more robust than a traditional circuit-switched telephone connection. The American research network ARPANET, funded through the Defense Department's Advanced Research Projects Agency, proved the concept worked in practice during the late 1960s. But a network of networks only became possible once Vint Cerf, Bob Kahn, and colleagues developed the TCP/IP protocol suite in the 1970s, a lingua franca that allowed entirely different underlying networks to communicate seamlessly. For years this interconnected system remained the preserve of universities, government labs, and defense contractors. The public breakthrough came in stages: the lifting of commercial restrictions in the late 1980s and early 1990s, the introduction of Tim Berners-Lee's World Wide Web, and the arrival of easy-to-use graphical browsers that made the whole apparatus accessible to ordinary people. Each of these moments was contingent on earlier choices, and each opened possibilities that no single planner had foreseen.