Relative Achievement is one of the four generic archetypes developed by Eric Wolstenholme and maps to the Success to the Successful Systems Archetype.

SystemsWiki's Musings

An escalation structure results from two or more competing entities with the competition taking them to somewhere none of them want to be. See also Archetypes.

Video

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STW Recursive Vision?

Insight synthesis of exchanges to better understand the basis of this decision.

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A model for unfolding the story about how stw videos are created.

The three basic simulation structures.

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

Part 2 demonstrates labeling of links as well as putting elements of the model in a folder. A number of previously developed models are also presented to provide an idea of what's possible.

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Establishing a reinforcing structure is one way to promote results thought is has its difficulties.

OK, we have a problem. Yet, do we really know what the problem is? More often than not we look at the symptoms, consider them the problem and attempt to fix them. This actually dooms us to failure because they're only symptoms.

Diagram from a paper by James B. Rieley entitled "The Euro Financial Crisis: Making Sense of the Mess".

Two goal seeking structures attempting to resolve and based on the delay one may tend to settle for less. See also Archetypes.

A Growth and Underinvestment structure is simply an elaborated Limits to Growth structure where the growth inhibitor is part of another Balancing Loop with an external standard and some delay. The real nasty thing about this structure is that the two Balancing Loops form a single Reinforcing Loop which inhibits growth.

Video

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Thoughts on the growth of the Twitter user community presented as a causal loop diagram.

The numerous Systems Archetypes popularized by Peter Senge, and others seem to be the source of great confusion for many. In response to this Eric Wolstenholme has endeavored to simplify the System Archetypes by mapping them to four generic archetypes.

Bathtub model with filling control added. Running the model is essentially considered to be turning on the faucet and water will run into the bathtub until it is full.

The simple savings account is used to demonstrate the nature of a reinforcing loop. Change the initial amount and interest rate and run the model to see the implications of changing these values.

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This is a model used to generate the historical patterns of behavior for the Network Magic example.

Video

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

The Self-Referening Model is one of the four basic model forms presented by Hannon & Ruth in Dynamic Modeling.

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The Accidental Adversaries structure represents a situation where two interacting entities which should produce growth unwittingly limit the growth of each other because of their actions to promote their own growth. See also Archetypes.

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

There is much we can learn from the development of qualitative relationships models though once we begin to ask questions like how long, how much, when, etc., a qualitative most is not likely to be of much use. The following video demonstrates how, in a very simple goal-seeking structure with delay, depending on the delay, it can be almost impossible to intuit the implications of the interactions with any level of accuracy. The difficulty arises essentially from operating with outdated data. See also Archetypes.