“…As a result, proponents of business process re-engineering (Davenport, 1993, Bernus and Nemes, 1996, Gunasekaran and Irani, 2010, Vernadat, 2002, Hammer and Champy, 1993 have indicated that it is always necessary to model the conceived business case in a virtual world; experiment and modify resources and flow sequences until optimal solution is obtained (Gunasekaran and Kobu, 2002. Other researchers have indicated that being able to achieve this in an efficient, timely and cost effective manner requires the use of a coherent set of well experimented modelling tools focussed on products, processes, resources, information, cost, value, etc , AMICE, 1993, Chen and Tsai, 2008, Lohse et al, 2006.…”