THE RE-THIN Dissertatio Prof. FP Cilliers ac PROBLEM OF COMPLEXITY. NKING THE ROLE OF CRITIQUE by Rika Preiser on presented for the degree of Doctor of Philosop at Stellenbosch University Promotor: Prof. AA van Niekerk Co-Promotor: Prof. J-HS Hofmeyr cted, until his death on 31 July 2011, as the origin this dissertation December 2012 E phy nal promotor of