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(jargon.info)Personality Characteristics

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:Personality Characteristics:
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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.