"The meeting of various discourses and the resulting tension which follows provides moments for agency – since one discourse enables critique and subversion of others. This can be theorized as interdiscursivity and linked to personal and/or societal change which in many contexts enables the shifting of one's subjectivity. In the context of personal change or agency, intersubjectivity can be viewed as enabling the shifting of one's subjectivity. This shifting, however, always occurs within matrices of power." (M. McKenzie, personal communication, February, 2007)