Beyond the design perspective of Gero's FBS framework

Among the various model based theories, the Gero's FBS frame-work [1, 2] is acknowledged as a well-grounded, effective and tested reference for describing both analysis and synthesis design tasks. Despite its design-centric nature, the FBS model can provide a valid support also to represent processes and tasks beyond its original scope. The specific interest of the authors is to extend the FBS application to model also uses and misuses of objects, interpretations of the users, needs and requirements as detailed in [3]. In fact, as partially addressed also in several papers available in litera-ture as [4, 5], some issues arise when the classical FBS framework is adopted to model particular aspects such as the user's role, values and needs, as well as to produce an explicit representation of failures and re-dundant functions. The full paper will present an extended classification of aspects, beyond the design perspective, which currently cannot be represented by the FBS model and some directions for its possible exten-sion. Several examples clarify the scopes and the characteristics of the proposed models. The current state of development of the author's work still cannot be considered an integrated model, but relevant possibilities to extend the domain of applicability of the FBS framework emerg