hack mode

hack mode n.  1. What one is in when hacking, of course.
   2. More specifically, a Zen-like state of total focus on The
   Problem that may be achieved when one is hacking (this is why every
   good hacker is part mystic).  Ability to enter such concentration
   at will correlates strongly with wizardliness; it is one of the
   most important skills learned during {larval stage}.  Sometimes
   amplified as `deep hack mode'.

   Being yanked out of hack mode (see {priority interrupt}) may be
   experienced as a physical shock, and the sensation of being in hack
   mode is more than a little habituating.  The intensity of this
   experience is probably by itself sufficient explanation for the
   existence of hackers, and explains why many resist being promoted
   out of positions where they can code.  See also {cyberspace}
   (sense 2).

   Some aspects of hackish etiquette will appear quite odd to an
   observer unaware of the high value placed on hack mode.  For
   example, if someone appears at your door, it is perfectly okay to
   hold up a hand (without turning one's eyes away from the screen) to
   avoid being interrupted.  One may read, type, and interact with the
   computer for quite some time before further acknowledging the
   other's presence (of course, he or she is reciprocally free to
   leave without a word).  The understanding is that you might be in
   {hack mode} with a lot of delicate {state} (sense 2) in your
   head, and you dare not {swap} that context out until you have
   reached a good point to pause. See also {juggling eggs}.