by Mentoring as Practice Cf. Ahmed, Sara (2012). On Being Included: Racism and Diversity in Institutional Life. Durham/London: Duke University Press, 25, 199, 175: When you don’t quite inhabit the norms, or you aim to transform them, you notice them as you come up against them. The wall is what we come up against: the sedimentation of history into a barrier that is solid and tangible in the present, a barrier to change as well as to the mobility of some, a barrier that remains invisible to those who can flow into the spaces created by institutions.