This is a more Traditional Career Model of how education works, with an increased lifetime earnings from going to college. The following are links to the other two models in the series.

• Loan Cost Model
• Savings Model

Supply and Demand tend to oscillate back and forth through Price.

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Purpose: Employ the Mono Lake model adapted from "Modeling the Environment" by Andrew Ford as a basis for developing a set of guidelines to support asynchronous multi-user model development.

Mono Lake is an ancient inland sea on the eastern side of the Sierra Nevada. From a policy point of view Mono Lake is the story of how a handful of people began a campaign to save a dying lake.

• 10.06.04 v1.0 created and documented by Bellinger. Initial problem with the reference mode has been fixed.

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.

Our actions are based on our beliefs and the results of those actions are the basis for our beliefs. The difficulty we create for ourselves is that we make assumptions as to how to interpret the results we select based on our beliefs. As a result we are often operating on a flawed perspective of reality.

Comparison of scalar and vector version of the rabbit population model.

Investigations into the relationships responsible for the success and failure of nations. This investigation was prompted after reading numerous references on the subject and perceiving that *Why Nations Fail: The Origins of Power, Prosperity, and Poverty* by Acemoglu and Robinson seem to make a great deal of sense.

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 9781 for a simulation of this model.

What do activities of these images have in common?

Part 1 demonstrates Picture primitives and Links to create representations of interactions. These are made visually attractive because the Picture primitives are overlay'd with images.

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A random walk demonstration using an ABM. As individuals drink more they become more intoxicated and their walk becomes more random. And when they drink to much it finally kills them.

This is a template which one might use as a basis for creating Insight Maker Relationship models. Links have default style of the blue ones in the diagram. The easiest way to get the red dashed links is to CTRL+d to duplicate them and then connect where appropriate.

Basic Stock & Flow models for use in Systemic Perspective video.

The following model was submitted by Lise Inman & Keith Margerison for inclusion in the ILE currently under development. I think it's a useful model which gets interesting as the arrival interval gets smaller and the queue backs up. So, what do you think of the model and what insights can we surface with this model?

Population Growth in an Agrarian Society with the addition of agriculture.

How a Savings Account works.

While all things are related for a particular situation all things are not relevant. We need to develop a simplified model of reality which depicts those interactions which are responsible for the patterns of behavior and current situation. We want the simplest model which enables the requisite understanding. This is no easy task though.

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

Are there environmental/physical limits to humanity? Based on the Are There Limits? blog post by Tom Fiddaman.

Understanding relationships is the foundation of effective problem solving. Though relations exists on multiple levels.

Yesterday's actions are responsible for the world we experience today. And today's actions are responsible for the world that we will experience tomorrow. The "Creating the Future" model is intended to provide a better sense of the common process associated with the unexpected unfolding of the future..

All the following have a common characteristic.

A number of questions considered relative to Systems Thinking.

In this piece, we explore the counter intuitive nature of systems where the best of intentions to address the homelessness situation using the most expedient approach is likely to make things even worse.