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.

All the following have a common characteristic.

Introduce the concept of modeling and simulation.

All the following have a common characteristic.

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.

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

All the following have a common characteristic.

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.

From Jay Forrester 1971 book World Dynamics, the earlier, simpler version of the World 3 Limits to Growth Model. Adapted by Geoff McDonnell from Mark Heffernan's ithink version at Systemswiki.org.

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.

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.

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

The interaction of a population of Moose and Wolves.

Little Red Riding Hood walking through the woods to Grandma's house. How long will it take?

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

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

The interaction of a population of Moose and Wolves.

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.

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

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

There are three types of models most commonly used.

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.

New Learning tend to reduce Outdated Thinking, Communicating & Learning though our Outdated Thinking, Communicating & Learning inhibits new learning.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.