The interaction of a population of Moose and Wolves.

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 1899 for a simulation of this model.

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

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

Introduce the concept of modeling and simulation.

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

Balancing Loop with Stock & Flow Diagram.

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

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.

The purpose of this model is to have the user change the value of stocks, flows and converters to experience a variety of different graphical results. Understanding this generic model is important pre-requisite to learning about intravenous drugs in the body, radioactivity, self-esteem, water flowing from a drain and many other basic natural systems.

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

Consider the following "Sustaining the Forest" model intended to provide another example of how unexpected the behavior of a web of extended interactions can be.

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.

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.

Balancing Loop with Stock & Flow Diagram.

Introduce the concept of modeling and simulation.

Consider the following "Sustaining the Forest" model intended to provide another example of how unexpected the behavior of a web of extended interactions can be.

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

There are about fifteen known archetypes with an interesting set of relationships among them.

SystemsWiki's Musings

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.

There's actually more to filling a swimming pool with water than you might realize.

What's the real difficulty associated with managing time?