The central issue that needs to be understood whilst studying project outcome through an analysis of actor interactions is thus: Why do people do what they do? One approach to understanding behaviour is to look at the rationality of individual actors, rather than the system as a whole. This is largely because political actors are driven by a combination of organisational and institutional roles and duties and calculated self-interest, with political interaction being organised around the construction and interpretation of meaning as well as the making of choices. It thus can be extremely difficult to transplant new technologies and ways of working into organisations (March & Olsen, 1989).