Where Wizards Stay Up Late: The Origins Of The Internet

Where Wizards Stay Up Late is Katie Hafner and Matthew Lyon's 1996 history of the ARPANET, the U. S. Defense Department research network that became the Internet. The book is built from extensive interviews with the BBN engineers (Bob Kahn, Frank Heart, Severo Ornstein, and the rest) who built the original IMPs, plus the broader ARPA research community that shaped the network's protocols.

Hafner and Lyon are former Wall Street Journal and New York Times reporters, and the book reads like extended longform journalism: clean prose, well-paced narrative, careful sourcing. The 1968-1972 BBN chapters are the heart of the book and remain the single best account of how a small team built the first packet-switched wide-area network in three months on a hard deadline. The book's continuing relevance is the framework it provides for thinking about every subsequent piece of internet infrastructure.

Recommended for readers of internet history (Walter Isaacson's The Innovators, John Markoff's What the Dormouse Said), for anyone interested in books like Where Wizards Stay Up Late in the technical-history tradition, and for software engineers curious about the actual origin of the protocols they use daily. Five stars and a standard reference.