Halliday & Matthiessen (1999: 598):
Here a contrast is construed in the grammar between the congruent we think, we believe, we know and the metaphorical the mind's operations. This contrast represents the conflict between our everyday experience of ourselves seeing, feeling, thinking, remembering, and so on, and the "scientific" model of cognitive science. Indeed, Dennett (1988) makes the generalisation that "every cognitivist theory currently defended or envisaged ... is a theory of the sub-personal level". Given this orientation, it would thus seem that the unified senser existing as a person who "senses" is an illusion construed by the grammar as part of a folk theory of our own sense of conscious processing.