A number of these soft systems methods have been developed including SSM (Checkland, 1981; Checkland and Scholes, 1990), ETHICS (Mumford, 1989)and Eason's User-Centred Design approach (Eason,1998). These are all fairly comprehensive methods and we cannot describe them in detail here.Rather, we will give a brief overview of SSM which is probably the best known of these approaches.