Chapter L (5)

When I left the company,
the blackjack program would still cheat
if you turned on the right sense switch,
and I think that's how it should be.
I didn't feel comfortable
hacking up the code of a Real Programmer.

This is one of hackerdom's great heroic epics, free verse or no. In a few spare images it captures more about the esthetics and psychology of hacking than all the scholarly volumes on the subject put together. For an opposing point of view, see the entry for {Real Programmer}.

[1992 postscript -- the author writes: "The original submission to the net was not in free verse, nor any approximation to it -- it was straight prose style, in non-justified paragraphs. In bouncing around the net it apparently got modified into the `free verse' form now popular. In other words, it got hacked on the net. That seems appropriate, somehow." The author adds that he likes the `free-verse' version better...]

:A Portrait of J. Random Hacker: ********************************

This profile reflects detailed comments on an earlier `trial balloon' version from about a hundred Usenet respondents. Where comparatives are used, the implicit `other' is a randomly selected segment of the non-hacker population of the same size as hackerdom.

An important point: Except in some relatively minor respects such as slang vocabulary, hackers don't get to be the way they are by imitating each other. Rather, it seems to be the case that the combination of personality traits that makes a hacker so conditions one's outlook on life that one tends to end up being like other hackers whether one wants to or not (much as bizarrely detailed similarities in behavior and preferences are found in genetic twins raised separately).

:General Appearance: ====================

Intelligent. Scruffy. Intense. Abstracted. Surprisingly for a sedentary profession, more hackers run to skinny than fat; both extremes are more common than elsewhere. Tans are rare.

:Dress: =======

Casual, vaguely post-hippie; T-shirts, jeans, running shoes, Birkenstocks (or bare feet). Long hair, beards, and moustaches are common. High incidence of tie-dye and intellectual or humorous `slogan' T-shirts (only rarely computer related; that would be too obvious).

A substantial minority prefers `outdoorsy' clothing -- hiking boots ("in case a mountain should suddenly spring up in the machine room", as one famous parody put it), khakis, lumberjack or chamois shirts, and the like.

Very few actually fit the "National Lampoon" Nerd stereotype, though it lingers on at MIT and may have been more common before 1975. At least since the late Seventies backpacks have been more common than briefcases, and the hacker `look' has been more whole-earth than whole-polyester.

Hackers dress for comfort, function, and minimal maintenance hassles rather than for appearance (some, perhaps unfortunately, take this to extremes and neglect personal hygiene). They have a very low tolerance of suits and other `business' attire; in fact, it is not uncommon for hackers to quit a job rather than conform to a dress code.

Female hackers almost never wear visible makeup, and many use none at all.

:Reading Habits: ================

Omnivorous, but usually includes lots of science and science fiction. The typical hacker household might subscribe to "Analog", "Scientific American", "Whole-Earth Review", and "Smithsonian" (most hackers ignore "Wired" and other self-consciously `cyberpunk' magazines, considering them {wannabee} fodder). Hackers often have a reading range that astonishes liberal arts people but tend not to talk about it as much. Many hackers spend as much of their spare time reading as the average American burns up watching TV, and often keep shelves and shelves of well-thumbed books in their homes.

:Other Interests: =================

Some hobbies are widely shared and recognized as going with the culture: science fiction, music, medievalism (in the active form practiced by the Society for Creative Anachronism and similar organizations), chess, go, backgammon, wargames, and intellectual games of all kinds. (Role-playing games such as Dungeons and Dragons used to be extremely popular among hackers but they lost a bit of their luster as they moved into the mainstream and became heavily commercialized. More recently, "Magic: The Gathering" has been widely popular among hackers.) Logic puzzles. Ham radio. Other interests that seem to correlate less strongly but positively with hackerdom include linguistics and theater teching.

:Physical Activity and Sports: ==============================

Many (perhaps even most) hackers don't follow or do sports at all and are determinedly anti-physical. Among those who do, interest in spectator sports is low to non-existent; sports are something one *does*, not something one watches on TV.

Further, hackers avoid most team sports like the plague. Volleyball was long a notable exception, perhaps because it's non-contact and relatively friendly; Ultimate Frisbee has become quite popular for similar reasons. Hacker sports are almost always primarily self-competitive ones involving concentration, stamina, and micromotor skills: martial arts, bicycling, auto racing, kite flying, hiking, rock climbing, aviation, target-shooting, sailing, caving, juggling, skiing, skating (ice and roller). Hackers' delight in techno-toys also tends to draw them towards hobbies with nifty complicated equipment that they can tinker with.

:Education: ===========

Nearly all hackers past their teens are either college-degreed or self-educated to an equivalent level. The self-taught hacker is often considered (at least by other hackers) to be better-motivated, and may be more respected, than his school-shaped counterpart. Academic areas from which people often gravitate into hackerdom include (besides the obvious computer science and electrical engineering) physics, mathematics, linguistics, and philosophy.

:Things Hackers Detest and Avoid: =================================

IBM mainframes. Smurfs, Ewoks, and other forms of offensive cuteness. Bureaucracies. Stupid people. Easy listening music. Television (except for cartoons, movies, and "Star Trek" classic). Business suits. Dishonesty. Incompetence. Boredom. COBOL. BASIC. Character-based menu interfaces.

:Food: ======

Ethnic. Spicy. Oriental, esp. Chinese and most esp. Szechuan, Hunan, and Mandarin (hackers consider Cantonese vaguely d'eclass'e). Hackers prefer the exotic; for example, the Japanese-food fans among them will eat with gusto such delicacies as fugu (poisonous pufferfish) and whale. Thai food has experienced flurries of popularity. Where available, high-quality Jewish delicatessen food is much esteemed. A visible minority of Southwestern and Pacific Coast hackers prefers Mexican.

For those all-night hacks, pizza and microwaved burritos are big. Interestingly, though the mainstream culture has tended to think of hackers as incorrigible junk-food junkies, many have at least mildly health-foodist attitudes and are fairly discriminating about what they eat. This may be generational; anecdotal evidence suggests that the stereotype was more on the mark before the early 1980s.

:Politics: ==========

Vaguely liberal-moderate, except for the strong libertarian contingent which rejects conventional left-right politics entirely. The only safe generalization is that hackers tend to be rather anti-authoritarian; thus, both conventional conservatism and `hard' leftism are rare. Hackers are far more likely than most non-hackers to either (a) be aggressively apolitical or (b) entertain peculiar or idiosyncratic political ideas and actually try to live by them day-to-day.

:Gender and Ethnicity: ======================

Hackerdom is still predominantly male. However, the percentage of women is clearly higher than the low-single-digit range typical for technical professions, and female hackers are generally respected and dealt with as equals.

In the U.S., hackerdom is predominantly Caucasian with strong minorities of Jews (East Coast) and Orientals (West Coast). The Jewish contingent has exerted a particularly pervasive cultural influence (see {Food}, above, and note that several common jargon terms are obviously mutated Yiddish).

The ethnic distribution of hackers is understood by them to be a function of which ethnic groups tend to seek and value education. Racial and ethnic prejudice is notably uncommon and tends to be met with freezing contempt.

When asked, hackers often ascribe their culture's gender- and color-blindness to a positive effect of text-only network channels, and this is doubtless a powerful influence. Also, the ties many hackers have to AI research and SF literature may have helped them to develop an idea of personhood that is inclusive rather than exclusive --- after all, if one's imagination readily grants full human rights to future AI programs, robots, dolphins, and extraterrestrial aliens, mere color and gender can't seem very important any more.

:Religion: ==========

Agnostic. Atheist. Non-observant Jewish. Neo-pagan. Very commonly, three or more of these are combined in the same person. Conventional faith-holding Christianity is rare though not unknown.

Even hackers who identify with a religious affiliation tend to be relaxed about it, hostile to organized religion in general and all forms of religious bigotry in particular. Many enjoy `parody' religions such as Discordianism and the Church of the SubGenius.

Also, many hackers are influenced to varying degrees by Zen Buddhism or (less commonly) Taoism, and blend them easily with their `native' religions.

There is a definite strain of mystical, almost Gnostic sensibility that shows up even among those hackers not actively involved with neo-paganism, Discordianism, or Zen. Hacker folklore that pays homage to `wizards' and speaks of incantations and demons has too much psychological truthfulness about it to be entirely a joke.

:Ceremonial Chemicals: ======================

Most hackers don't smoke tobacco, and use alcohol in moderation if at all (though there is a visible contingent of exotic-beer fanciers, and a few hackers are serious oenophiles). Limited use of non-addictive psychedelic drugs, such as cannabis, LSD, psilocybin, and nitrous oxide, etc., used to be relatively common and is still regarded with more tolerance than in the mainstream culture. Use of `downers' and opiates, on the other hand, appears to be particularly rare; hackers seem in general to dislike drugs that make them stupid. On the third hand, many hackers regularly wire up on caffeine and/or sugar for all-night hacking runs.

:Communication Style: =====================

See the discussions of speech and writing styles near the beginning of this File. Though hackers often have poor person-to-person communication skills, they are as a rule quite sensitive to nuances of language and very precise in their use of it. They are often better at writing than at speaking.

:Geographical Distribution: ===========================

In the United States, hackerdom revolves on a Bay Area-to-Boston axis; about half of the hard core seems to live within a hundred miles of Cambridge (Massachusetts) or Berkeley (California), although there are significant contingents in Los Angeles, in the Pacific Northwest, and around Washington DC. Hackers tend to cluster around large cities, especially `university towns' such as the Raleigh-Durham area in North Carolina or Princeton, New Jersey (this may simply reflect the fact that many are students or ex-students living near their alma maters).

:Sexual Habits: ===============

Hackerdom easily tolerates a much wider range of sexual and lifestyle variation than the mainstream culture. It includes a relatively large gay and bisexual contingent. Hackers are somewhat more likely to live in polygynous or polyandrous relationships, practice open marriage, or live in communes or group houses. In this, as in general appearance, hackerdom semi-consciously maintains `counterculture' values.

:Personality Characteristics: =============================

The most obvious common `personality' characteristics of hackers are high intelligence, consuming curiosity, and facility with intellectual abstractions. Also, most hackers are `neophiles', stimulated by and appreciative of novelty (especially intellectual novelty). Most are also relatively individualistic and anti-conformist.

Although high general intelligence is common among hackers, it is not the sine qua non one might expect. Another trait is probably even more important: the ability to mentally absorb, retain, and reference large amounts of `meaningless' detail, trusting to later experience to give it context and meaning. A person of merely average analytical intelligence who has this trait can become an effective hacker, but a creative genius who lacks it will swiftly find himself outdistanced by people who routinely upload the contents of thick reference manuals into their brains. [During the production of the first book version of this document, for example, I learned most of the rather complex typesetting language TeX over about four working days, mainly by inhaling Knuth's 477-page manual. My editor's flabbergasted reaction to this genuinely surprised me, because years of associating with hackers have conditioned me to consider such performances routine and to be expected. --ESR]

Contrary to stereotype, hackers are *not* usually intellectually narrow; they tend to be interested in any subject that can provide mental stimulation, and can often discourse knowledgeably and even interestingly on any number of obscure subjects -- if you can get them to talk at all, as opposed to, say, going back to their hacking.

It is noticeable (and contrary to many outsiders' expectations) that the better a hacker is at hacking, the more likely he or she is to have outside interests at which he or she is more than merely competent.

Hackers are `control freaks' in a way that has nothing to do with the usual coercive or authoritarian connotations of the term. In the same way that children delight in making model trains go forward and back by moving a switch, hackers love making complicated things like computers do nifty stuff for them. But it has to be *their* nifty stuff. They don't like tedium, nondeterminism, or most of the fussy, boring, ill-defined little tasks that go with maintaining a normal existence. Accordingly, they tend to be careful and orderly in their intellectual lives and chaotic elsewhere. Their code will be beautiful, even if their desks are buried in 3 feet of crap.

Hackers are generally only very weakly motivated by conventional rewards such as social approval or money. They tend to be attracted by challenges and excited by interesting toys, and to judge the interest of work or other activities in terms of the challenges offered and the toys they get to play with.

In terms of Myers-Briggs and equivalent psychometric systems, hackerdom appears to concentrate the relatively rare INTJ and INTP types; that is, introverted, intuitive, and thinker types (as opposed to the extroverted-sensate personalities that predominate in the mainstream culture). ENT[JP] types are also concentrated among hackers but are in a minority.

:Weaknesses of the Hacker Personality: ======================================

Hackers have relatively little ability to identify emotionally with other people. This may be because hackers generally aren't much like `other people'. Unsurprisingly, hackers also tend towards self-absorption, intellectual arrogance, and impatience with people and tasks perceived to be wasting their time.

As cynical as hackers sometimes wax about the amount of idiocy in the world, they tend by reflex to assume that everyone is as rational, `cool', and imaginative as they consider themselves. This bias often contributes to weakness in communication skills. Hackers tend to be especially poor at confrontation and negotiation.

Because of their passionate embrace of (what they consider to be) the {Right Thing}, hackers can be unfortunately intolerant and bigoted on technical issues, in marked contrast to their general spirit of camaraderie and tolerance of alternative viewpoints otherwise. Old-time {{ITS}} partisans look down on the ever-growing hordes of {{Unix}} hackers; Unix aficionados despise {VMS} and {{MS-DOS}}; and hackers who are used to conventional command-line user interfaces loudly loathe mouse-and-menu based systems such as the Macintosh. Hackers who don't indulge in {Usenet} consider it a huge waste of time and {bandwidth}; fans of old adventure games such as {ADVENT} and {Zork} consider {MUD}s to be glorified chat systems devoid of atmosphere or interesting puzzles; hackers who are willing to devote endless hours to Usenet or MUDs consider {IRC} to be a *real* waste of time; IRCies think MUDs might be okay if there weren't all those silly puzzles in the way. And, of course, there are the perennial {holy wars} -- {EMACS} vs. {vi}, {big-endian} vs. {little-endian}, RISC vs. CISC, etc., etc., etc. As in society at large, the intensity and duration of these debates is usually inversely proportional to the number of objective, factual arguments available to buttress any position.

As a result of all the above traits, many hackers have difficulty maintaining stable relationships. At worst, they can produce the classic {computer geek}: withdrawn, relationally incompetent, sexually frustrated, and desperately unhappy when not submerged in his or her craft. Fortunately, this extreme is far less common than mainstream folklore paints it -- but almost all hackers will recognize something of themselves in the unflattering paragraphs above.

Hackers are often monumentally disorganized and sloppy about dealing with the physical world. Bills don't get paid on time, clutter piles up to incredible heights in homes and offices, and minor maintenance tasks get deferred indefinitely.

1994-95's fad behavioral disease was a syndrome called Attention Deficit Disorder, supposedly characterized by (among other things) a combination of short attention span with an ability to `hyperfocus' imaginatively on interesting tasks. There are grounds for questioning whether ADD actually exists, and if it does whether it is really a `disease' rather than an extreme of a normal genetic variation like having freckles or being able to taste DPT; but it is certainly true that many hacker traits coincide with major indicators for ADD, and probably true that ADD boosters would find a far higher rate of clinical ADD among hackers than the supposedly mainstream-normal 10%.

The sort of person who routinely uses phrases like `incompletely socialized' usually thinks hackers are. Hackers regard such people with contempt when they notice them at all.

:Miscellaneous: ===============

Hackers are more likely to have cats than dogs (in fact, it is widely grokked that cats have the hacker nature). Many drive incredibly decrepit heaps and forget to wash them; richer ones drive spiffy Porsches and RX-7s and then forget to have them washed. Almost all hackers have terribly bad handwriting, and often fall into the habit of block-printing everything like junior draftsmen.

:Helping Hacker Culture Grow: ***************************** If you enjoyed the Jargon File, please help the culture that created it grow and flourish. Here are several ways you can help:

* If you are a writer or journalist, don't say or write {hacker} when you mean {cracker}. If you work with writers or journalists, educate them on this issue and push them to do the right thing. If you catch a newspaper or magazine abusing the work `hacker', write them and straigten them out (this appendix includes a model letter).

* If you're a techie or computer hobbyist, get involved with one of the free Unixes. Toss out that lame Microsoft OS, or confine it to one disk partition and put Linux or FreeBSD or NetBSD on the other one. And the next time your friend or boss is thinking about some commercial software `solution' that costs more than it's worth, be ready to blow the competition away with free software running over a free Unix.

* Contribute to organizations like the Free Software Foundation that promote the production of high-quality free software. You can reach the Free Software Foundation at [email protected], by phone at +1-617-542-5942, or by snail-mail at 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

* Support the League for Programming Freedom, which opposes over-broad software patents that constantly threaten to blow up in hackers' faces, preventing them from developing innovative software for tomorrow's needs. You can reach the League for Programming Freedom at [email protected]. by phone at +1 617 621 7084, or by snail-mail at 1 Kendall Square #143, P.O.Box 9171, Cambridge, Massachusetts 02139 USA.

* If you do nothing else, please help fight government attempts to seize political control of Internet content and restrict strong cryptography. As TNHD III went to press, the so-called `Communications Decency Act' had just been declared "unconstitutional on its face" by a Federal court, but the government is expected to appeal. If it's still law when you read this, please join the effort by the Citizens' Internet Empowerment Coalition lawsuit to have the CDA quashed or repealed. Surf to the Center for Democracy and technology's home page at http://www.cdt.org to see what you can do to help fight censorship of the net.

Here's the text of a letter RMS wrote to the Wall Street Journal to complain about their policy of using "hacker" only in a pejorative sense. We hear that most major newspapers have the same policy. If you'd like to help change this situation, send your favorite newspaper the same letter -- or, better yet, write your own letter.

Dear Editor:

This letter is not meant for publication, although you can
publish it if you wish. It is meant specifically for you, the
editor, not the public.

I am a hacker. That is to say, I enjoy playing with computers --
working with, learning about, and writing clever computer
programs. I am not a cracker; I don't make a practice of
breaking computer security.

There's nothing shameful about the hacking I do. But when I tell
people I am a hacker, people think I'm admitting something
naughty -- because newspapers such as yours misuse the word
"hacker", giving the impression that it means "security breaker"
and nothing else. You are giving hackers a bad name.

The saddest thing is that this problem is perpetuated
deliberately. Your reporters know the difference between
"hacker" and "security breaker". They know how to make the
distinction, but you don't let them! You insist on using
"hacker" pejoratively. When reporters try to use another word,
you change it. When reporters try to explain the other meanings,
you cut it.

Of course, you have a reason. You say that readers have become
used to your insulting usage of "hacker", so that you cannot
change it now. Well, you can't undo past mistakes today; but
that is no excuse to repeat them tomorrow.

If I were what you call a "hacker", at this point I would
threaten to crack your computer and crash it. But I am a hacker,
not a cracker. I don't do that kind of thing! I have enough
computers to play with at home and at work; I don't need yours.
Besides, it's not my way to respond to insults with violence. My
response is this letter.

You owe hackers an apology; but more than that, you owe us
ordinary respect.

Sincerely, etc.

:Bibliography: **************

Here are some other books you can read to help you understand the hacker mindset.

:G"odel, Escher, Bach: An Eternal Golden Braid: Douglas Hofstadter Basic Books, 1979 ISBN 0-394-74502-7

This book reads like an intellectual Grand Tour of hacker preoccupations. Music, mathematical logic, programming, speculations on the nature of intelligence, biology, and Zen are woven into a brilliant tapestry themed on the concept of encoded self-reference. The perfect left-brain companion to "Illuminatus".

:Illuminatus!: I. "The Eye in the Pyramid" II. "The Golden Apple" III. "Leviathan". Robert Shea and Robert Anton Wilson Dell, 1988 ISBN 0-440-53981-1

This work of alleged fiction is an incredible berserko-surrealist rollercoaster of world-girdling conspiracies, intelligent dolphins, the fall of Atlantis, who really killed JFK, sex, drugs, rock'n'roll, and the Cosmic Giggle Factor. First published in three volumes, but there is now a one-volume trade paperback, carried by most chain bookstores under SF. The perfect right-brain companion to Hofstadter's "G"odel, Escher, Bach". See {Eris}, {Discordianism}, {random numbers}, {Church of the SubGenius}.

:The Hitchhiker's Guide to the Galaxy: Douglas Adams Pocket Books, 1981 ISBN 0-671-46149-4

This `Monty Python in Space' spoof of SF genre traditions has been popular among hackers ever since the original British radio show. Read it if only to learn about Vogons (see {bogon}) and the significance of the number 42 (see {random numbers}) -- and why the winningest chess program of 1990 was called `Deep Thought'.

:The Tao of Programming: James Geoffrey Infobooks, 1987 ISBN 0-931137-07-1

This gentle, funny spoof of the "Tao Te Ching" contains much that is illuminating about the hacker way of thought. "When you have learned to snatch the error code from the trap frame, it will be time for you to leave."

:Hackers: Steven Levy Anchor/Doubleday 1984 ISBN 0-385-19195-2

Levy's book is at its best in describing the early MIT hackers at the Model Railroad Club and the early days of the microcomputer revolution. He never understood Unix or the networks, though, and his enshrinement of Richard Stallman as "the last true hacker" turns out (thankfully) to have been quite misleading. Numerous minor factual errors also mar the text; for example, Levy's claim that the original Jargon File derived from the TMRC Dictionary (the File originated at Stanford and was brought to MIT in 1976; the co-authors of the first edition had never seen the dictionary in question). There are also numerous misspellings in the book that inflame the passions of old-timers; as Dan Murphy, the author of TECO, once said: "You would have thought he'd take the trouble to spell the name of a winning editor right." Nevertheless, this remains a useful and stimulating book that captures the feel of several important hackish subcultures.

:The Computer Contradictionary: Stan Kelly-Bootle MIT Press, 1995 ISBN 0-262-61112-0

This pastiche of Ambrose Bierce's famous work is similar in format to the Jargon File (and quotes several entries from TNHD-2) but somewhat different in tone and intent. It is more satirical and less anthropological, and is largely a product of the author's literate and quirky imagination. For example, it defines `computer science' as "a study akin to numerology and astrology, but lacking the precision of the former and the success of the latter" and `implementation' as "The fruitless struggle by the talented and underpaid to fulfill promises made by the rich and ignorant"; `flowchart' becomes "to obfuscate a problem with esoteric cartoons". Revised and expanded from "The Devil's DP Dictionary", McGraw-Hill 1981, ISBN 0-07-034022-6.

:The Devouring Fungus: Tales from the Computer Age: Karla Jennings Norton, 1990 ISBN 0-393-30732-8

The author of this pioneering compendium knits together a great deal of computer- and hacker-related folklore with good writing and a few well-chosen cartoons. She has a keen eye for the human aspects of the lore and is very good at illuminating the psychology and evolution of hackerdom. Unfortunately, a number of small errors and awkwardnesses suggest that she didn't have the final manuscript checked over by a native speaker; the glossary in the back is particularly embarrassing, and at least one classic tale (the Magic Switch story, retold here under {A Story About `Magic'} in Appendix A is given in incomplete and badly mangled form. Nevertheless, this book is a win overall and can be enjoyed by hacker and non-hacker alike.

:The Soul of a New Machine: Tracy Kidder Little, Brown, 1981 (paperback: Avon, 1982 ISBN 0-380-59931-7)

This book (a 1982 Pulitzer Prize winner) documents the adventure of the design of a new Data General computer, the MV-8000 Eagle. It is an amazingly well-done portrait of the hacker mindset -- although largely the hardware hacker -- done by a complete outsider. It is a bit thin in spots, but with enough technical information to be entertaining to the serious hacker while providing non-technical people a view of what day-to-day life can be like -- the fun, the excitement, the disasters. During one period, when the microcode and logic were glitching at the nanosecond level, one of the overworked engineers departed the company, leaving behind a note on his terminal as his letter of resignation: "I am going to a commune in Vermont and will deal with no unit of time shorter than a season."

:Life with UNIX: a Guide for Everyone: Don Libes and Sandy Ressler Prentice-Hall, 1989 ISBN 0-13-536657-7

The authors of this book set out to tell you all the things about Unix that tutorials and technical books won't. The result is gossipy, funny, opinionated, downright weird in spots, and invaluable. Along the way they expose you to enough of Unix's history, folklore and humor to qualify as a first-class source for these things. Because so much of today's hackerdom is involved with Unix, this in turn illuminates many of its in-jokes and preoccupations.

:True Names ... and Other Dangers: Vernor Vinge Baen Books, 1987 ISBN 0-671-65363-6

Hacker demigod Richard Stallman used to say that the title story of this book "expresses the spirit of hacking best". Until the subject of the next entry came out, it was hard to even nominate another contender. The other stories in this collection are also fine work by an author who has since won multiple Hugos and is one of today's very best practitioners of hard SF.

:Snow Crash: Neal Stephenson Bantam, 1992 ISBN 0-553-56261-4

Stephenson's epic, comic cyberpunk novel is deeply knowing about the hacker psychology and its foibles in a way no other author of fiction has ever even approached. His imagination, his grasp of the relevant technical details, and his ability to communicate the excitement of hacking and its results are astonishing, delightful, and (so far) unsurpassed.

:Cyberpunk: Outlaws and Hackers on the Computer Frontier: Katie Hafner & John Markoff Simon & Schuster 1991 ISBN 0-671-68322-5

This book gathers narratives about the careers of three notorious crackers into a clear-eyed but sympathetic portrait of hackerdom's dark side. The principals are Kevin Mitnick, "Pengo" and "Hagbard" of the Chaos Computer Club, and Robert T. Morris (see {RTM}, sense 2) . Markoff and Hafner focus as much on their psychologies and motivations as on the details of their exploits, but don't slight the latter. The result is a balanced and fascinating account, particularly useful when read immediately before or after Cliff Stoll's {The Cuckoo's Egg}. It is especially instructive to compare RTM, a true hacker who blundered, with the sociopathic phone-freak Mitnick and the alienated, drug-addled crackers who made the Chaos Club notorious. The gulf between {wizard} and {wannabee} has seldom been made more obvious.

:Technobabble: John Barry MIT Press 1991 ISBN 0-262-02333-4

Barry's book takes a critical and humorous look at the `technobabble' of acronyms, neologisms, hyperbole, and metaphor spawned by the computer industry. Though he discusses some of the same mechanisms of jargon formation that occur in hackish, most of what he chronicles is actually suit-speak -- the obfuscatory language of press releases, marketroids, and Silicon Valley CEOs rather than the playful jargon of hackers (most of whom wouldn't be caught dead uttering the kind of pompous, passive-voiced word salad he deplores).

:The Cuckoo's Egg: Clifford Stoll Doubleday 1989 ISBN 0-385-24946-2

Clifford Stoll's absorbing tale of how he tracked Markus Hess and the Chaos Club cracking ring nicely illustrates the difference between `hacker' and `cracker'. Stoll's portrait of himself, his lady Martha, and his friends at Berkeley and on the Internet paints a marvelously vivid picture of how hackers and the people around them like to live and how they think.

#===================== THE JARGON FILE ENDS HERE ====================#

and here is the preface, in it's entirety, which usually precedes the document itself. Project Gutenberg readers have so often requested a document actually start at the beginning, that we do this regularly.

#======= THIS IS THE JARGON FILE, VERSION 4.0.0, 24 JUL 1996 =======#

This is the Jargon File, a comprehensive compendium of hacker slang illuminating many aspects of hackish tradition, folklore, and humor.

This document (the Jargon File) is in the public domain, to be freely used, shared, and modified. There are (by intention) no legal restraints on what you can do with it, but there are traditions about its proper use to which many hackers are quite strongly attached. Please extend the courtesy of proper citation when you quote the File, ideally with a version number, as it will change and grow over time. (Examples of appropriate citation form: "Jargon File 4.0.0" or "The on-line hacker Jargon File, version 4.0.0, 24 JUL 1996".)

The Jargon File is a common heritage of the hacker culture. Over the years a number of individuals have volunteered considerable time to maintaining the File and been recognized by the net at large as editors of it. Editorial responsibilities include: to collate contributions and suggestions from others; to seek out corroborating information; to cross-reference related entries; to keep the file in a consistent format; and to announce and distribute updated versions periodically. Current volunteer editors include:

Eric Raymond [email protected]

Although there is no requirement that you do so, it is considered good form to check with an editor before quoting the File in a published work or commercial product. We may have additional information that would be helpful to you and can assist you in framing your quote to reflect not only the letter of the File but its spirit as well.

All contributions and suggestions about this file sent to a volunteer editor are gratefully received and will be regarded, unless otherwise labelled, as freely given donations for possible use as part of this public-domain file.

From time to time a snapshot of this file has been polished, edited, and formatted for commercial publication with the cooperation of the volunteer editors and the hacker community at large. If you wish to have a bound paper copy of this file, you may find it convenient to purchase one of these. They often contain additional material not found in on-line versions. The two `authorized' editions so far are described in the Revision History section; there may be more in the future.

:Introduction: **************

This document is a collection of slang terms used by various subcultures of computer hackers. Though some technical material is included for background and flavor, it is not a technical dictionary; what we describe here is the language hackers use among themselves for fun, social communication, and technical debate.

The `hacker culture' is actually a loosely networked collection of subcultures that is nevertheless conscious of some important shared experiences, shared roots, and shared values. It has its own myths, heroes, villains, folk epics, in-jokes, taboos, and dreams. Because hackers as a group are particularly creative people who define themselves partly by rejection of `normal' values and working habits, it has unusually rich and conscious traditions for an intentional culture less than 40 years old.

As usual with slang, the special vocabulary of hackers helps hold their culture together -- it helps hackers recognize each other's places in the community and expresses shared values and experiences. Also as usual, *not* knowing the slang (or using it inappropriately) defines one as an outsider, a mundane, or (worst of all in hackish vocabulary) possibly even a {suit}. All human cultures use slang in this threefold way -- as a tool of communication, and of inclusion, and of exclusion.

Among hackers, though, slang has a subtler aspect, paralleled perhaps in the slang of jazz musicians and some kinds of fine artists but hard to detect in most technical or scientific cultures; parts of it are code for shared states of *consciousness*. There is a whole range of altered states and problem-solving mental stances basic to high-level hacking which don't fit into conventional linguistic reality any better than a Coltrane solo or one of Maurits Escher's `trompe l'oeil' compositions (Escher is a favorite of hackers), and hacker slang encodes these subtleties in many unobvious ways. As a simple example, take the distinction between a {kluge} and an {elegant} solution, and the differing connotations attached to each. The distinction is not only of engineering significance; it reaches right back into the nature of the generative processes in program design and asserts something important about two different kinds of relationship between the hacker and the hack. Hacker slang is unusually rich in implications of this kind, of overtones and undertones that illuminate the hackish psyche.

But there is more. Hackers, as a rule, love wordplay and are very conscious and inventive in their use of language. These traits seem to be common in young children, but the conformity-enforcing machine we are pleased to call an educational system bludgeons them out of most of us before adolescence. Thus, linguistic invention in most subcultures of the modern West is a halting and largely unconscious process. Hackers, by contrast, regard slang formation and use as a game to be played for conscious pleasure. Their inventions thus display an almost unique combination of the neotenous enjoyment of language-play with the discrimination of educated and powerful intelligence. Further, the electronic media which knit them together are fluid, `hot' connections, well adapted to both the dissemination of new slang and the ruthless culling of weak and superannuated specimens. The results of this process give us perhaps a uniquely intense and accelerated view of linguistic evolution in action.

Hacker slang also challenges some common linguistic and anthropological assumptions. For example, it has recently become fashionable to speak of `low-context' versus `high-context' communication, and to classify cultures by the preferred context level of their languages and art forms. It is usually claimed that low-context communication (characterized by precision, clarity, and completeness of self-contained utterances) is typical in cultures which value logic, objectivity, individualism, and competition; by contrast, high-context communication (elliptical, emotive, nuance-filled, multi-modal, heavily coded) is associated with cultures which value subjectivity, consensus, cooperation, and tradition. What then are we to make of hackerdom, which is themed around extremely low-context interaction with computers and exhibits primarily "low-context" values, but cultivates an almost absurdly high-context slang style?

The intensity and consciousness of hackish invention make a compilation of hacker slang a particularly effective window into the surrounding culture -- and, in fact, this one is the latest version of an evolving compilation called the `Jargon File', maintained by hackers themselves for over 15 years. This one (like its ancestors) is primarily a lexicon, but also includes topic entries which collect background or sidelight information on hacker culture that would be awkward to try to subsume under individual slang definitions.

Though the format is that of a reference volume, it is intended that the material be enjoyable to browse. Even a complete outsider should find at least a chuckle on nearly every page, and much that is amusingly thought-provoking. But it is also true that hackers use humorous wordplay to make strong, sometimes combative statements about what they feel. Some of these entries reflect the views of opposing sides in disputes that have been genuinely passionate; this is deliberate. We have not tried to moderate or pretty up these disputes; rather we have attempted to ensure that *everyone's* sacred cows get gored, impartially. Compromise is not particularly a hackish virtue, but the honest presentation of divergent viewpoints is.

The reader with minimal computer background who finds some references incomprehensibly technical can safely ignore them. We have not felt it either necessary or desirable to eliminate all such; they, too, contribute flavor, and one of this document's major intended audiences --- fledgling hackers already partway inside the culture -- will benefit from them.

A selection of longer items of hacker folklore and humor is included in Appendix A, {Hacker Folklore}. The `outside' reader's attention is particularly directed to Appendix B, {A Portrait of J. Random Hacker}. Appendix C, the {Bibliography}, lists some non-technical works which have either influenced or described the hacker culture.

Because hackerdom is an intentional culture (one each individual must choose by action to join), one should not be surprised that the line between description and influence can become more than a little blurred. Earlier versions of the Jargon File have played a central role in spreading hacker language and the culture that goes with it to successively larger populations, and we hope and expect that this one will do likewise.

:Of Slang, Jargon, and Techspeak: =================================

Linguists usually refer to informal language as `slang' and reserve the term `jargon' for the technical vocabularies of various occupations. However, the ancestor of this collection was called the `Jargon File', and hacker slang is traditionally `the jargon'. When talking about the jargon there is therefore no convenient way to distinguish it from what a *linguist* would call hackers' jargon --- the formal vocabulary they learn from textbooks, technical papers, and manuals.

To make a confused situation worse, the line between hacker slang and the vocabulary of technical programming and computer science is fuzzy, and shifts over time. Further, this vocabulary is shared with a wider technical culture of programmers, many of whom are not hackers and do not speak or recognize hackish slang.

Accordingly, this lexicon will try to be as precise as the facts of usage permit about the distinctions among three categories:

* `slang': informal language from mainstream English or
non-technical subcultures (bikers, rock fans, surfers, etc).

* `jargon': without qualifier, denotes informal `slangy' language
peculiar to or predominantly found among hackers -- the subject
of this lexicon.

* `techspeak': the formal technical vocabulary of programming,
computer science, electronics, and other fields connected to
hacking.

This terminology will be consistently used throughout the remainder of this lexicon.

The jargon/techspeak distinction is the delicate one. A lot of techspeak originated as jargon, and there is a steady continuing uptake of jargon into techspeak. On the other hand, a lot of jargon arises from overgeneralization of techspeak terms (there is more about this in the {Jargon Construction} section below).

In general, we have considered techspeak any term that communicates primarily by a denotation well established in textbooks, technical dictionaries, or standards documents.

A few obviously techspeak terms (names of operating systems, languages, or documents) are listed when they are tied to hacker folklore that isn't covered in formal sources, or sometimes to convey critical historical background necessary to understand other entries to which they are cross-referenced. Some other techspeak senses of jargon words are listed in order to make the jargon senses clear; where the text does not specify that a straight technical sense is under discussion, these are marked with `[techspeak]' as an etymology. Some entries have a primary sense marked this way, with subsequent jargon meanings explained in terms of it.

We have also tried to indicate (where known) the apparent origins of terms. The results are probably the least reliable information in the lexicon, for several reasons. For one thing, it is well known that many hackish usages have been independently reinvented multiple times, even among the more obscure and intricate neologisms. It often seems that the generative processes underlying hackish jargon formation have an internal logic so powerful as to create substantial parallelism across separate cultures and even in different languages! For another, the networks tend to propagate innovations so quickly that `first use' is often impossible to pin down. And, finally, compendia like this one alter what they observe by implicitly stamping cultural approval on terms and widening their use.

Despite these problems, the organized collection of jargon-related oral history for the new compilations has enabled us to put to rest quite a number of folk etymologies, place credit where credit is due, and illuminate the early history of many important hackerisms such as {kluge}, {cruft}, and {foo}. We believe specialist lexicographers will find many of the historical notes more than casually instructive.

:Revision History: ==================

The original Jargon File was a collection of hacker jargon from technical cultures including the MIT AI Lab, the Stanford AI lab (SAIL), and others of the old ARPANET AI/LISP/PDP-10 communities including Bolt, Beranek and Newman (BBN), Carnegie-Mellon University (CMU), and Worcester Polytechnic Institute (WPI).

The Jargon File (hereafter referred to as `jargon-1' or `the File') was begun by Raphael Finkel at Stanford in 1975. From this time until the plug was finally pulled on the SAIL computer in 1991, the File was named AIWORD.RF[UP,DOC] there. Some terms in it date back considerably earlier ({frob} and some senses of {moby}, for instance, go back to the Tech Model Railroad Club at MIT and are believed to date at least back to the early 1960s). The revisions of jargon-1 were all unnumbered and may be collectively considered `Version 1'.

In 1976, Mark Crispin, having seen an announcement about the File on the SAIL computer, {FTP}ed a copy of the File to MIT. He noticed that it was hardly restricted to `AI words' and so stored the file on his directory as AI:MRC;SAIL JARGON.

The file was quickly renamed JARGON > (the `>' caused versioning under ITS) as a flurry of enhancements were made by Mark Crispin and Guy L. Steele Jr. Unfortunately, amidst all this activity, nobody thought of correcting the term `jargon' to `slang' until the compendium had already become widely known as the Jargon File.

Raphael Finkel dropped out of active participation shortly thereafter and Don Woods became the SAIL contact for the File (which was subsequently kept in duplicate at SAIL and MIT, with periodic resynchronizations).

The File expanded by fits and starts until about 1983; Richard Stallman was prominent among the contributors, adding many MIT and ITS-related coinages.

In Spring 1981, a hacker named Charles Spurgeon got a large chunk of the File published in Stewart Brand's "CoEvolution Quarterly" (issue 29, pages 26--35) with illustrations by Phil Wadler and Guy Steele (including a couple of the Crunchly cartoons). This appears to have been the File's first paper publication.

A late version of jargon-1, expanded with commentary for the mass market, was edited by Guy Steele into a book published in 1983 as "The Hacker's Dictionary" (Harper & Row CN 1082, ISBN 0-06-091082-8). The other jargon-1 editors (Raphael Finkel, Don Woods, and Mark Crispin) contributed to this revision, as did Richard M. Stallman and Geoff Goodfellow. This book (now out of print) is hereafter referred to as `Steele-1983' and those six as the Steele-1983 coauthors.

Shortly after the publication of Steele-1983, the File effectively stopped growing and changing. Originally, this was due to a desire to freeze the file temporarily to facilitate the production of Steele-1983, but external conditions caused the `temporary' freeze to become permanent.

The AI Lab culture had been hit hard in the late 1970s by funding cuts and the resulting administrative decision to use vendor-supported hardware and software instead of homebrew whenever possible. At MIT, most AI work had turned to dedicated LISP Machines. At the same time, the commercialization of AI technology lured some of the AI Lab's best and brightest away to startups along the Route 128 strip in Massachusetts and out West in Silicon Valley. The startups built LISP machines for MIT; the central MIT-AI computer became a {TWENEX} system rather than a host for the AI hackers' beloved {ITS}.

The Stanford AI Lab had effectively ceased to exist by 1980, although the SAIL computer continued as a Computer Science Department resource until 1991. Stanford became a major {TWENEX} site, at one point operating more than a dozen TOPS-20 systems; but by the mid-1980s most of the interesting software work was being done on the emerging BSD Unix standard.

In April 1983, the PDP-10-centered cultures that had nourished the File were dealt a death-blow by the cancellation of the Jupiter project at Digital Equipment Corporation. The File's compilers, already dispersed, moved on to other things. Steele-1983 was partly a monument to what its authors thought was a dying tradition; no one involved realized at the time just how wide its influence was to be.

By the mid-1980s the File's content was dated, but the legend that had grown up around it never quite died out. The book, and softcopies obtained off the ARPANET, circulated even in cultures far removed from MIT and Stanford; the content exerted a strong and continuing influence on hacker language and humor. Even as the advent of the microcomputer and other trends fueled a tremendous expansion of hackerdom, the File (and related materials such as the {AI Koans} in Appendix A) came to be seen as a sort of sacred epic, a hacker-culture Matter of Britain chronicling the heroic exploits of the Knights of the Lab. The pace of change in hackerdom at large accelerated tremendously -- but the Jargon File, having passed from living document to icon, remained essentially untouched for seven years.

This revision contains nearly the entire text of a late version of jargon-1 (a few obsolete PDP-10-related entries were dropped after careful consultation with the editors of Steele-1983). It merges in about 80% of the Steele-1983 text, omitting some framing material and a very few entries introduced in Steele-1983 that are now also obsolete.

This new version casts a wider net than the old Jargon File; its aim is to cover not just AI or PDP-10 hacker culture but all the technical computing cultures wherein the true hacker-nature is manifested. More than half of the entries now derive from {Usenet} and represent jargon now current in the C and Unix communities, but special efforts have been made to collect jargon from other cultures including IBM PC programmers, Amiga fans, Mac enthusiasts, and even the IBM mainframe world.

Eric S. Raymond <[email protected]> maintains the new File with assistance from Guy L. Steele Jr. <[email protected]>; these are the persons primarily reflected in the File's editorial `we', though we take pleasure in acknowledging the special contribution of the other coauthors of Steele-1983. Please email all additions, corrections, and correspondence relating to the Jargon File to [email protected].

(Warning: other email addresses appear in this file *but are not guaranteed to be correct* later than the revision date on the first line. *Don't* email us if an attempt to reach your idol bounces --- we have no magic way of checking addresses or looking up people.)

The 2.9.6 version became the main text of "The New Hacker's Dictionary", by Eric Raymond (ed.), MIT Press 1991, ISBN 0-262-68069-6.

The 3.0.0 version was published in September 1993 as the second edition of "The New Hacker's Dictionary", again from MIT Press (ISBN 0-262-18154-1).

If you want the book, you should be able to find it at any of the major bookstore chains. Failing that, you can order by mail from

The MIT Press
55 Hayward Street
Cambridge, MA 02142

or order by phone at (800)-356-0343 or (617)-625-8481.

The maintainers are committed to updating the on-line version of the Jargon File through and beyond paper publication, and will continue to make it available to archives and public-access sites as a trust of the hacker community.

Here is a chronology of the high points in the recent on-line revisions:

Version 2.1.1, Jun 12 1990: the Jargon File comes alive again after a seven-year hiatus. Reorganization and massive additions were by Eric S. Raymond, approved by Guy Steele. Many items of UNIX, C, USENET, and microcomputer-based jargon were added at that time.

Version 2.9.6, Aug 16 1991: corresponds to reproduction copy for book. This version had 18952 lines, 148629 words, 975551 characters, and 1702 entries.

Version 2.9.8, Jan 01 1992: first public release since the book, including over fifty new entries and numerous corrections/additions to old ones. Packaged with version 1.1 of vh(1) hypertext reader. This version had 19509 lines, 153108 words, 1006023 characters, and 1760 entries.

Version 2.9.9, Apr 01 1992: folded in XEROX PARC lexicon. This version had 20298 lines, 159651 words, 1048909 characters, and 1821 entries.

Version 2.9.10, Jul 01 1992: lots of new historical material. This version had 21349 lines, 168330 words, 1106991 characters, and 1891 entries.

Version 2.9.11, Jan 01 1993: lots of new historical material. This version had 21725 lines, 171169 words, 1125880 characters, and 1922 entries.

Version 2.9.12, May 10 1993: a few new entries & changes, marginal MUD/IRC slang and some borderline techspeak removed, all in preparation for 2nd Edition of TNHD. This version had 22238 lines, 175114 words, 1152467 characters, and 1946 entries.

Version 3.0.0, Jul 27 1993: manuscript freeze for 2nd edition of TNHD. This version had 22548 lines, 177520 words, 1169372 characters, and 1961 entries.

Version 3.1.0, Oct 15 1994: interim release to test WWW conversion. This version had 23197 lines, 181001 words, 1193818 characters, and 1990 entries.

Version 3.2.0, Mar 15 1995: Spring 1995 update. This version had 23822 lines, 185961 words, 1226358 characters, and 2031 entries.

Version 3.3.0, Jan 20 1996: Winter 1996 update. This version had 24055 lines, 187957 words, 1239604 characters, and 2045 entries.

Version 3.3.1, Jan 25 1996: Copy-corrected improvement on 3.3.0 shipped to MIT Press as a step towards TNHD III. This version had 24147 lines, 188728 words, 1244554 characters, and 2050 entries.

Version 3.3.2, Mar 20 1996: A number of new entries pursuant on 3.3.2. This version had 24442 lines, 190867 words, 1262468 characters, and 2061 entries.

Version 3.3.3, Mar 25 1996: Cleanup before TNHD III manuscript freeze. This version had 24584 lines, 191932 words, 1269996 characters, and 2064 entries.

Version 4.0.0, Jul 25 1996: The actual TNHD III version after copy-edit. This version had 24801 lines, 193697 words, 1281402 characters, and 2067 entries.

Version numbering: Version numbers should be read as major.minor.revision. Major version 1 is reserved for the `old' (ITS) Jargon File, jargon-1. Major version 2 encompasses revisions by ESR (Eric S. Raymond) with assistance from GLS (Guy L. Steele, Jr.) leading up to and including the second paper edition. From now on, major version number N.00 will probably correspond to the Nth paper edition. Usually later versions will either completely supersede or incorporate earlier versions, so there is generally no point in keeping old versions around.

Our thanks to the coauthors of Steele-1983 for oversight and assistance, and to the hundreds of Usenetters (too many to name here) who contributed entries and encouragement. More thanks go to several of the old-timers on the Usenet group alt.folklore.computers, who contributed much useful commentary and many corrections and valuable historical perspective: Joseph M. Newcomer <[email protected]>, Bernie Cosell <[email protected]>, Earl Boebert <[email protected]>, and Joe Morris <[email protected]>.

We were fortunate enough to have the aid of some accomplished linguists. David Stampe <[email protected]> and Charles Hoequist <[email protected]> contributed valuable criticism; Joe Keane <[email protected]> helped us improve the pronunciation guides.

A few bits of this text quote previous works. We are indebted to Brian A. LaMacchia <[email protected]> for obtaining permission for us to use material from the "TMRC Dictionary"; also, Don Libes <[email protected]> contributed some appropriate material from his excellent book "Life With UNIX". We thank Per Lindberg <[email protected]>, author of the remarkable Swedish-language 'zine "Hackerbladet", for bringing "FOO!" comics to our attention and smuggling one of the IBM hacker underground's own baby jargon files out to us. Thanks also to Maarten Litmaath for generously allowing the inclusion of the ASCII pronunciation guide he formerly maintained. And our gratitude to Marc Weiser of XEROX PARC <[email protected]> for securing us permission to quote from PARC's own jargon lexicon and shipping us a copy.