The structure responsible for rabbit population growth.

What's the real difficulty associated with managing time?

The structure responsible for rabbit population growth.

Balancing Loop with Stock & Flow Diagram.

The interaction of a population of Moose and Wolves.

What do activities of these images have in common?

What do activities of these images have in common?

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

Introduce the concept of modeling and simulation.

The structure responsible for rabbit population growth.

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

This Loan Cost Model is the second in the series. It takes into account the potential cost of student loans in the case that the student does not manage to graduate college or does not succeed in their career.

• Traditional Career Model
• Savings Model

What do activities of these images have in common?

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.

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

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

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 common archetype of systems that include relapse or recidivism allows exploration of the unintended effects of increasing upstream capacity and swamping downstream capacity. The increase in the relapse rate eventually returns to swamp upstream capacity as well. A social welfare example, based on a TANF case study, from How Small System Dynamics Models Can Help the Policy Process. N. Ghaffarzadegan, J. Lyneis, GP Richardson. System Dynamics Review 27,1 (2011) 22-44 Conference version at http://bit.ly/HlxtZj

All the following have a common characteristic.

What do activities of these images have in common?

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

Introduce the concept of modeling and simulation.

Introduce the concept of modeling and simulation.

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

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