ghost in the machine

noun3

1. •
   A metaphor for, and criticism of, the Cartesian dualist conception of a human being as a physical body ("the machine") controlled by an immaterial mind ("the ghost").
2. •
   A apparent intelligence within a machine, computer system, or other technology, as invoked to explain seemingly purposeful actions, mysterious glitches, or unexpected behaviour.

   • What is left is electrons bouncing in a box: relationships between frequencies, a dance of shadows without substance, a phantasmagorical presence, the ghosts in the machine. — 1992
3. •
   A spirit or alien entity that temporarily inhabits a vehicle, piece of machinery, or computer system.