The Jargon File

The object

The Jargon File is a continuously edited glossary of hacker slang, begun in 1975 by Raphael Finkel at the Stanford Artificial Intelligence Laboratory and passed between the AI labs at Stanford, MIT, and Carnegie Mellon. It circulated as a plain text file over the ARPANET, the network that would become the internet, and was maintained for years on the SAIL and MIT machines, with Mark Crispin moving an early copy to MIT and Don Woods later becoming a principal keeper. It defines terms like foo, kludge, grok, bogon, and wizard, but more importantly, it defines a sensibility.

A dictionary that argues

Most dictionaries describe a language from the outside. The Jargon File is written from inside the culture it documents, with opinions. Its entries carry jokes, etymologies, and value judgments; reading it is less like consulting a reference than overhearing a community explain itself to itself. A first attempt to bring it to print came in 1983, when Guy Steele and others adapted the File into The Hacker's Dictionary, published by Harper & Row and illustrated with the cartoons of the figure known as the "Crunchly." Eric S. Raymond began maintaining the File in the early 1990s, and his expanded print edition, The New Hacker's Dictionary (MIT Press, 1991, with further editions in 1993 and 1996), made it famous far beyond the labs.

Why it matters

Naming is power. By collecting its own vocabulary, the hacker community made itself legible: to newcomers, to outsiders, and to itself. The File encodes the Spacewar! ethic and the Manifesto's identity in a form you can browse: humor, anti-authoritarianism, precision, and play, distilled into definitions. It even formalized its own grammar of jargon (the "-P" predicate suffix borrowed from Lisp, the overgeneralized plurals, the appendix on hacker writing style), so that the way hackers spoke became as documented as what they meant.

It is also a record of how cultures fork. The File's tone shifted as it moved between institutions and editors, and Raymond's stewardship drew open criticism, notably from Steele and other early contributors, for inserting his own voice and politics and for tilting the File toward the Unix world it had originally predated. The dispute over who the culture belonged to was the same argument the Homebrew newsletter started, here conducted in lexicography.

The lesson it set loose

A community that documents its own language is choosing to persist. Slang is normally ephemeral; writing it down is an act of memory and a claim of continuity. The Jargon File proved that hacker culture was not a moment but a tradition, one that could be inherited, contested, and added to.