The purpose of this model is to have the user change the value of stocks, flows and converters to experience a variety of different graphical results. Understanding this generic model is important pre-requisite to learning about intravenous drugs in the body, radioactivity, self-esteem, water flowing from a drain and many other basic natural systems.
New Learning tend to reduce Outdated Thinking, Communicating & Learning though our Outdated Thinking, Communicating & Learning inhibits new learning.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.
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?
![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?](https://insightmakercloud-files.storage.googleapis.com/0299e23d-6369-4f4f-89a2-4a5649759047/images/cover.jpg?X-Goog-Algorithm=GOOG4-RSA-SHA256&X-Goog-Credential=insightmakercloud-file-access%40insightmakercloud.iam.gserviceaccount.com%2F20250617%2Fauto%2Fstorage%2Fgoog4_request&X-Goog-Date=20250617T023606Z&X-Goog-Expires=3600&X-Goog-SignedHeaders=host&X-Goog-Signature=73e1167c6f0b53abfec9ab206c0e6bec3b304d274ece5c3fbc4bfbf55f57f7c31603578bf361295bc8179c0c1f677a43b160b89613d7e68c08f694946dbcf30df8fd8daaff9e163b0734535687c8168ea3fdf241530e3b82864140751431afc47324e8fed4574f5dbefe9ded0ab226e295bd0571a7f4953a521e044f667d0e574817c44fc736e5861ed6ab37a0033ec83d44708bc3ae69a864fa695f5b1fc72d41ed7d629c95703ef0a305571fc4ad94168b77638916b7e72413d40a01390fc2bedd319ee5cc53eac53122ce50c89c6bf306c765e9097ffb225f1728635c7eb76cedf6fe53d5f6006198f4d7bd3693652ecfff0aff73a567a1b742437923b437)
