This material is based upon work supported by the South African National Research Foundation (NRF) under Grant number 73974. Any opinion, findings and conclusions or recommendations expressed in this material are those of the author and therefore the NRF does not accept any liability in regard thereto.
This article was presented as a keynote paper at a conference entitled ‘Liminality revisited’,
organized by the PTHU, ILRS and NOSTER at Utrecht University on the 26th of May
2011.