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

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

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

SystemsWiki's Musings

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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This is my first attempt at creating a simple Agent Based Simulation Model. Nothing fancy, just something that works.

STW Recursive Vision?

All the following have a common characteristic.

Jackson's System of Systems Methodology (SOSM) framework presents a construct that enables one to begin to make sense of the broad array of approaches that claim to embrace the Systems Thinking paradigm.

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.

What do activities of these images have in common?

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.

A map of the elements associated with Systems Thinking as defined by different sources.

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

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 The difficulty arises essentially from operating with outdated data.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.

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.

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.

The structure responsible for rabbit population growth.

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..

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

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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.

The delays associated with adjusting the shower is a very common example of the Balancing Loop with Delay Systems Archetype. 

What do activities of these images have in common?