Yesterday I went to Aalborg University’s Institute of Architecture & Design to spend a few hours with associate professor Nicola Morelli discussing the state of Product/Service System Design in Denmark. Among others we discussed the PSS model in the previous post and different ways to further develop it as well as alternative models for representing more complex flows – which is one of the main limitations of this model. I’ll make a post concerning this as soon as possible.
What’s interesting is, however, how do the different models relate to documenting vs. developing models. Can they be used for both? Morelli’s answer is yes. Just by working with the models and setting up the action-flows the designer simulates the use case or action-flow thus filling out the gabs which were (possibly) not explicitly presented in just a text description of the problem.
Conclusion is: the model (and other flow models) should be used actively in the design process – as framework or similar – and support the concept development in detail. It’s important to understand the model as a “zoomed in view” and use more general models for describing the whole system from a more general view, e.g. presenting the actors and main actions’ relations.

