All you wanted to do was put a bird feeder in your yard to attract birds.

The Home Heating System can be used to demonstrate how we get caught in dilemmas and become victims of ourselves.

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

The interaction of a population of Moose and Wolves.

Introduce the concept of modeling and simulation.

Introduce the concept of modeling and simulation.

A small change in one variable can have a marked impact on multiple variables. Run the model [quits change] = 0  and consider the output. What happens if  you change [quits change] = 5. Run the model to find out. Was the change what you expected?

Based on 1990 SDR Article. Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't predict the consequences of behavior. These consequences are maintained despite disturbances. See also Double loop learning and Nurse Thinking Insights

When one undertakes to create a model there are a number of guidelines that are considered essential for consideration if there is to be a success with the model.

Balancing Loop with Stock & Flow Diagram.

The structure responsible for rabbit population growth.

What do activities of these images have in common?

Balancing Loop with Stock & Flow Diagram.

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 and SysNet for a Video.

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.

What do activities of these images have in common?

What do activities of these images have in common?

All the following have a common characteristic.

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.

Balancing Loop with Stock & Flow Diagram.

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

All the following have a common characteristic.

Balancing Loop with Stock & Flow Diagram.

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