This diagram presents the valid relationships between stocks, flows, and parameters. Ghosts of Stocks, Flows, and Converters can be created as needed.

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

A Limits to Growth Systems Archetype consists of a Reinforcing Loop, the growth of which, after some success, is offset by the action of a Balancing Loop.

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

Fixes that Fail Systems Archetype Stock & Flow Diagram.

A Tragedy of the Commons situation exists whenever two or more activities, each, which in order to produce results, rely on a shared limited resource. Results for these activities continue to develop as long as their use of the limited resource doesn't exceed the resource limit. Once this limit is reached the results produced by each activity are limited to the level at which the resource is replenished. As an example, consider multiple departments with an organization using IT resources, until they've exhausted IT capacity.

As long as A and B are equally successful everything will remain stable. Though if either A or B receive more resources than the other, or A or B is more successful than the other, the imbalance will result in greater success of A or B accordingly and promote even more success of the one that demonstrates greater success.

Shifting the Burden/SFD is a segment of Systems Archetypes.

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 752 for a causal loop version of this model.

There are four relevant boundaries associated with the Network Magic situation.

Introduce the concept of modeling and simulation.

There are about a dozen known systems archetypes with an interesting set of relationships among them. Watch Video

The interaction of a population of Moose and Wolves.

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?

The interaction of a population of Moose and Wolves.

Based on a sound realization of reality we need an effective approach to dealing with situations which promotes the requisite understanding to develop a strategy that deals appropriately with the situation. A strategy which also is explicitly designed to minimize unintended consequences and puts in place responses to them should they arise.

There are limits to what one can infer from a qualitative model.

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.

Introduce the concept of modeling and simulation.

The interaction of a population of Moose and Wolves.

Reinforcing Loop/SFD Simulation allow one to experience the explicit implications of the interactions.

The interaction of a population of Moose and Wolves.

The interaction of a population of Moose and Wolves.

New Learning tend to reduce Outdated Thinking, Communicating & Learning though our Outdated Thinking, Communicating & Learning inhibits new learning. The question is then how do we break this cycle. Adopted from "An Introduction to Systems Thinking with STELLA" by Barry Richmond.