part one: contextualisation
A major function of sociolinguistic mechanisms is to play a part in the control of members of subordinate groups by members of dominant groups. This control is effected both by regulation and by constitution: by explicit manipulation and by the creation of an apparent ‘natural world’ in which inequitable relations and processes are presented as given and inevitable. Power differential provides the underlying semantic for the system’s ideas encoded in language structure.
Fowler et al 1974:2