“…Hierarchical Process Modelling (HPM) draws on systems theory and cybernetics (Beer, 1959;Jackson, 1993Jackson, , 2001Lutterer, 2005;Potocan et al, 2005;Stephens and Haslett, 2005). The method has developed with more than a decade of applications in various settings, including oil exploration, flood defence systems, asset management and performance management Hall, 1998, 2003;Hall et al, 1998;Davis et al, 2007;Marashi and Davis, 2007).…”