**Pattern Name:** System of Models
**Introduction:** Know when and whether to use a given model.
**Illustration:**
Earth Scale
Neighborhood Scale
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**CONTEXT:** Even useful models need to fit the context being considered. When working in and with socially complex systems we need a set of models and a sequence for using them.
**PROBLEM:** **There are so many models available that it is confusing and limiting.**
**Forces:**
**THEREFORE (SOLUTION):** **Refine the use of this limited set of interrelated models so that anyone could understand and use in sequences.**
**Background (support):** Kerry Turner and Marc Pierson have been using models professionally for 40 years. They have a set of models and way of using them that works well. They are presenting them in an open source space for your use and adaptation. We have two general models that seem to make intuitive sense to people and lead to surprising insights.
The simplest and perhaps most profound it the Social Tetrahedron.
The next, slightly more complex model, Six Q&As, again works for anyone and sorts through an immense amount of social complexity.
Next comes a pile of models that we use in sequences we have learned work for us. There are two speciality modeling tools: DSRP (Plectica) and OPM (Object Process Method, OPCloud). Beyond those
**Actions:**
**Consequences:**
**RELATED PATTERNS:**
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