Communicative Model
When you are designing something, a communicative model is the way you describe the thing you are designing or making. It doesn't say whether the thing you are making or designing is good or not, it is just describes it as it is.
When you are designing something, a communicative model is the way you describe the thing you are designing or making. It doesn't say whether the thing you are making or designing is good or not, it is just describes it as it is.