Halliday & Matthiessen (1999: 586-7, 588):
What is the nature of the move from our everyday construal of the experience of consciousness — our folk theory of Sensers sensing phenomena or projecting ideas — to the way cognitive scientists construe that experience? We can see the essential nature of this move when the folk theory is reconstrued as if it was a scientific one. …
The scientific model is metaphorical; and it stands as a metaphor for the congruent folk model.