A phrase coined by Dan Simmons defined as a state of bliss, such as that possibly experienced after a hacking run, in which one feels as if he/she has complete control of one's mind, and knows how to use it.

"When one is writing -- REALLY writing -- it is as if one is given a fatline to the gods. No true poet has been able to explain the exhilaration one feels when the mind has become an INSTRUMENT as surely as does the pen or thought processor, ordering and expressing the revelations flowing in FROM SOMEWHERE ELSE."
-- Dan Simmons / Hyperion