Halliday & Matthiessen (1999: 594, 595):
… the object of study of cognitive study is constructed by ideational metaphor, as reified sensing (perceiving, thinking) or as names of sensing (the mind, mental phenomena).
… while the domain of scientific theorising about cognition is determined by the grammar of processes of sensing, the model is depersonalised, and sensing is construed metaphorically in terms of abstract "things" such as knowledge, memory, concepts. This suggests that mainstream cognitive science is basically an elaborated variety of a folk model, rather than a different scientific alternative …