Balancing Loop with Stock & Flow Diagram.

There are limits to what one can infer from a qualitative model.

This is a model depicting the interactions of the Aesop's Fable "The Boy Who Cried Wolf."

There are about a dozen known systems archetypes with an interesting set of relationships among them. Watch Video

The interaction of a population of Moose and Wolves.

This Romeo and Juliet Model was adapted by Geoff McDonnell from Michael J Radzicki (1993) Dyadic processes, tempestuous relationships, and system dynamics, System Dynamic Rev. 9 (1) :79-94

While these pictures represent very different things there is a common essence.

The interaction of a population of Moose and Wolves.

The interaction of a population of Moose and Wolves.

The interaction of a population of Moose and Wolves.

CLD of Eric Wolstenholme Syst. Dyn. Rev. 23, 371–389, (2007) See IM-1008 for a stock flow version.

New Learning tend to reduce Outdated Thinking, Communicating & Learning though our Outdated Thinking, Communicating & Learning inhibits new learning. The question is then how do we break this cycle. Adopted from "An Introduction to Systems Thinking with STELLA" by Barry Richmond.

If we pay close attention to our actions and the typical outcomes of those actions it would be evident that there are frequently occurring patterns that develop. And there is a relation between the patterns.

The interaction of a population of Moose and Wolves.

Introduce the concept of modeling and simulation.

If we pay close attention to our actions and the typical outcomes of those actions it would be evident that there are frequently occurring patterns that develop. And there is a relation between the patterns.

To develop insights regarding a situation of interest there are a number of things should be considered to ensure a view of the relevant influences.

All you wanted to do was put a bird feeder in your yard to attract birds and make for a more pleasant morning. And...

When endeavoring to develop an understanding of the nature of something it is generally useful to create a model of some type to aid in surfacing that understanding.

The structure responsible for rabbit population growth.

Rich Pictures, Causal Loop Diagrams and Stock & Flow Simulation Models are the three types of models most commonly used.

The model construction process is actually a balancing loop which endeavors to employ an abstract version of real events to form a model which produces conclusions and behavior which mimic the real events.

This Romeo and Juliet Model was adapted by Geoff McDonnell from Michael J Radzicki (1993) Dyadic processes, tempestuous relationships, and system dynamics, System Dynamic Rev. 9 (1) :79-94

This model is derived from the paper "Nobody Ever Gets Credit for Fixing Problems that Never Happened: Creating and Sustaining Process Improvement" by Nelson P. Repenning and John D Sterman. See Insight 752 for a causal loop version of this model.

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