An example of why it's so critical to understand where the boundaries are when considering a system. (developed from Eric Wolstenholme's Archetype examples by Gene Bellinger)   YouTube Video
An example of why it's so critical to understand where the boundaries are when considering a system. (developed from Eric Wolstenholme's Archetype examples by Gene Bellinger)
11 months ago
New Learning tend to reduce Outdated Thinking, Communicating & Learning though our Outdated Thinking, Communicating & Learning inhibits new learning.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. @ LinkedIn
New Learning tend to reduce Outdated Thinking, Communicating & Learning though our Outdated Thinking, Communicating & Learning inhibits new learning.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.
WIP Book Summary based on Terry Sampson's  summary  of Philip Ball's May 2024 Royal Society  presentation
WIP Book Summary based on Terry Sampson's summary of Philip Ball's May 2024 Royal Society presentation
3 months ago
 Go to  Gene Bellinger's insight version  with video link 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 up

Go to Gene Bellinger's insight version with video link 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 abstract Conference version here

5 11 months ago
This is a stock-flow consistent model, namely the simplest (SIM) model with government money. I have added imports and exports and an exchange rate which has an influence on consumption demand via real disposable income and real foreign demand.   Godley/Lavoie (2006), chapter 3    (I had to change t
This is a stock-flow consistent model, namely the simplest (SIM) model with government money. I have added imports and exports and an exchange rate which has an influence on consumption demand via real disposable income and real foreign demand.

Godley/Lavoie (2006), chapter 3

(I had to change the equation for consumption demand. The disposable income now enters with a time lag of one period. Otherwise the model would be recursive and would not work in Insight Maker. Thanks to Gene for support.)


designed by Dirk Ehnts (blog)
 No economy can function well without adequate funding and in the absence of finance will eventually fall into recession. Funds (financial assets in the model) are primarily injected through investments. This is certainly true for investments and payments undertaken by the government but also for pr

No economy can function well without adequate funding and in the absence of finance will eventually fall into recession. Funds (financial assets in the model) are primarily injected through investments. This is certainly true for investments and payments undertaken by the government but also for private investments via bank loans. Net exports (i.e.trade surpluses) also represent an injecton of financial assets into the economy. By contrast financial assets are taken out of the economy through taxation, the repayment of bank loans and the running of a negative trade balance. Also, if the population in aggregate decides to save more this has the effect as if money were taken out of the economy. I have deliberately avoided specifying where the funds for treasury payments and public investments come from, as this is controversial. Modern Monetary Theory, for instance, says that these funds are not provided through tax revenue. Austerity can be seen as a process that deliberately diminishes or takes out financial assets from the economy through taxation, restrictions on bank loans or cutbacks in payments and public spending by the government. It is probably useful to look at insights 2740 and 2741 before examining this CLD because they provide the context and purpose for net public spending and investment.


Unfolding causal loop diagram story of hospital congestion from Eric Wolstenholme's more detailed explanation of  hospital congestion IM  from March 2022 Youtube  video  and online stella  presentation . Use of cascading interlinked archetypes. See Kumu  version ,   early discharge boundaries IM  fo
Unfolding causal loop diagram story of hospital congestion from Eric Wolstenholme's more detailed explanation of hospital congestion IM from March 2022 Youtube video and online stella presentation. Use of cascading interlinked archetypes. See Kumu version,  early discharge boundaries IM for an earlier version and Generic Archetypes IM from Gene Bellinger
7 months ago
A system diagram for the Mojave Desert for an assignment at OSU- RNG 341.
A system diagram for the Mojave Desert for an assignment at OSU- RNG 341.
This is a stock-flow consistent model, namely a modified version of the simplest (PC) model with money and boonds.   Godley/Lavoie (2006), chapter 4    (I had to change the equation for consumption demand. The disposable income now enters with a time lag of one period. Otherwise the model would be r
This is a stock-flow consistent model, namely a modified version of the simplest (PC) model with money and boonds.

Godley/Lavoie (2006), chapter 4

(I had to change the equation for consumption demand. The disposable income now enters with a time lag of one period. Otherwise the model would be recursive and would not work in Insight Maker. Thanks to Gene for support.)


designed by Dirk Ehnts (blog)
Template file of Emergy Symbols  version 1 2019_05_17
Template file of Emergy Symbols 
version 1 2019_05_17
Summary of evolution and the modern synthesis with genetics. See also the more recent extended synthesis  IM-2099
Summary of evolution and the modern synthesis with genetics. See also the more recent extended synthesis IM-2099