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Tuesday, July 24, 2012

Who Really Invented the Internet?

Contrary to legend, it wasn't the federal government, and the Internet had nothing to do with maintaining communications during a war.

A telling moment in the presidential race came recently when Barack Obama said: "If you've got a business, you didn't build that. Somebody else made that happen." He justified elevating bureaucrats over entrepreneurs by referring to bridges and roads, adding: "The Internet didn't get invented on its own. Government research created the Internet so that all companies could make money off the Internet."

It's an urban legend that the government launched the Internet. The myth is that the Pentagon created the Internet to keep its communications lines up even in a nuclear strike. The truth is a more interesting story about how innovation happens—and about how hard it is to build successful technology companies even once the government gets out of the way.

For many technologists, the idea of the Internet traces to Vannevar Bush, the presidential science adviser during World War II who oversaw the development of radar and the Manhattan Project. In a 1946 article in The Atlantic titled "As We May Think," Bush defined an ambitious peacetime goal for technologists: Build what he called a "memex" through which "wholly new forms of encyclopedias will appear, ready made with a mesh of associative trails running through them, ready to be dropped into the memex and there amplified."

That fired imaginations, and by the 1960s technologists were trying to connect separate physical communications networks into one global network—a "world-wide web." The federal government was involved, modestly, via the Pentagon's Advanced Research Projects Agency Network. Its goal was not maintaining communications during a nuclear attack, and it didn't build the Internet. Robert Taylor, who ran the ARPA program in the 1960s, sent an email to fellow technologists in 2004 setting the record straight: "The creation of the Arpanet was not motivated by considerations of war. The Arpanet was not an Internet. An Internet is a connection between two or more computer networks."

If the government didn't invent the Internet, who did? Vinton Cerf developed the TCP/IP protocol, the Internet's backbone, and Tim Berners-Lee gets credit for hyperlinks.

But full credit goes to the company where Mr. Taylor worked after leaving ARPA: Xerox. It was at the Xerox PARC labs in Silicon Valley in the 1970s that the Ethernet was developed to link different computer networks. Researchers there also developed the first personal computer (the Xerox Alto) and the graphical user interface that still drives computer usage today.

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