''We do not have access to reality. All we have access to are sensations (sight, touch, smells, hearing, etc.), which are organized into sensorial experiences. These are "models of reality". There are three processes of modeling: Deletion, distortion and generalization. If you think of a map, which is a model for a territory, you can see the three processes of modeling at work: the map is much smaller than the territory (distortion), the map does not contain all of the attributes of the territory like people or trees or individual buildings (deletion), and all maps use similar conventions (generalization). Therefore, the map is not the territory, but a deleted, distorted and generalized representation of it. Such simplified representations are very useful, since a map that was exactly the same size of the territory would be useless. So models are important and useful, but very often people forget that the map is not the territory and start believing that the model is the real thing.''/bernhard