ABSTRACT
In defining a model, the dictionary talks of making a representation, an imitation, an image, a copy or a paradigm.
We talk of models and use them in many different contexts. Perhaps the term is used too readily or too loosely, devaluing its meaning and power. Nevertheless, in the built environment it is common to physically build a mock-up (models) of how the construction will look. Engineers will build prototypes (models) of a new machine, for example a car. Planners build simulation models to represent traffic flows as a way of assessing new road layouts.
