The scope and purpose of System Archetypes are stated as a concrete question.
System Archetypes
A practical method guide: clarify prerequisites and materials, understand the complete process, and look up outputs, pitfalls, and stop criteria.
Prerequisite
What needs to be finished first
Behaviour over time, causal variables and delays, past interventions and domain decision makers are available.
Preparation
What needs to be ready before start
Behaviour over time, causal variables and delays, past interventions, shared workspace, source links, and decision log.
System owner · domain actors · facilitator experienced in loops
Collect Behaviour over time, causal variables and delays, past interventions in advance and mark open assumptions.
90 minutes
Prepare match behaviour over time to causal loops of a known archetype visibly and calibrate assessment terms before starting.
Core question
The one question this method answers
Which feedback archetype explains the pattern, and where can the structure change?
Flow
Phases with goal, actions, output and pitfall
Archetypes such as Fixes that Fail, Shifting the Burden, or Limits to Growth are hypotheses about loop structures. Observed behaviour must fit the archetype and use concrete variables.
archetype diagnosis
Fictional worked example
match behaviour over time to causal loops of a known archetype as a precise working structure with a fictional example.
| Subject | Behaviour pattern | Archetype | Loops | Leverage |
|---|---|---|---|---|
| archetype diagnosisWorked example | Backlog falls briefly then rises higher. | Shifting the Burden; alternative Fixes that Fail. | Contractors reduce causal learning with delay. | Cause feedback; share of recurring tickets. |
1. Behaviour pattern
- archetype diagnosis
- Backlog falls briefly then rises higher.
2. Archetype
- archetype diagnosis
- Shifting the Burden; alternative Fixes that Fail.
3. Loops
- archetype diagnosis
- Contractors reduce causal learning with delay.
4. Leverage
- archetype diagnosis
- Cause feedback; share of recurring tickets.
The example demonstrates the domain logic of System Archetypes; worksheets remain blank.
- 1
Plot pattern
Plot pattern

Goal
Produce behaviour curves so the core question “Which feedback archetype explains the pattern, and where can the structure change?” can be answered with stronger support.
Inputs for this step
- Behaviour over time
- causal variables and delays
- past interventions
Actions
- Plot key variables as behaviour over time.
- Record source, rationale, and open uncertainty directly in behaviour curves.
Output
behaviour curves
behaviour curves · source · uncertainty · next decision
Quality check
Are horizon and measures consistent?
Pitfall
An archetype is chosen for a similar story without checking loops and behaviour over time. Operationalise variables, check loop polarities, and test at least one competing explanation.
Timing: 10–20 minutes
- 2
Select candidates
Select candidates

Goal
Produce candidate comparison so the core question “Which feedback archetype explains the pattern, and where can the structure change?” can be answered with stronger support.
Inputs for this step
- behaviour curves
- causal variables and delays
- past interventions
Actions
- Compare two candidate archetypes by loop structure.
- Record source, rationale, and open uncertainty directly in candidate comparison.
Output
candidate comparison
candidate comparison · source · uncertainty · next decision
Quality check
Does every loop fit the real mechanism?
Pitfall
An archetype is chosen for a similar story without checking loops and behaviour over time. Operationalise variables, check loop polarities, and test at least one competing explanation.
Timing: 10–20 minutes
- 3
Validate loops
Validate loops

Goal
Produce validated loop map so the core question “Which feedback archetype explains the pattern, and where can the structure change?” can be answered with stronger support.
Inputs for this step
- candidate comparison
- causal variables and delays
- past interventions
Actions
- Validate polarity, delay, and evidence with actors.
- Record source, rationale, and open uncertainty directly in validated loop map.
Output
validated loop map
validated loop map · source · uncertainty · next decision
Quality check
Does the structure explain the time pattern?
Pitfall
An archetype is chosen for a similar story without checking loops and behaviour over time. Operationalise variables, check loop polarities, and test at least one competing explanation.
Timing: 10–20 minutes
- 4
Change structure
Change structure

Goal
Produce intervention hypothesis so the core question “Which feedback archetype explains the pattern, and where can the structure change?” can be answered with stronger support.
Inputs for this step
- validated loop map
- causal variables and delays
- past interventions
Actions
- Design a fundamental intervention and leading indicator.
- Record source, rationale, and open uncertainty directly in intervention hypothesis.
Output
intervention hypothesis
intervention hypothesis · source · uncertainty · next decision
Quality check
Does the action target the loop rather than the symptom?
Pitfall
An archetype is chosen for a similar story without checking loops and behaviour over time. Operationalise variables, check loop polarities, and test at least one competing explanation.
Timing: 10–20 minutes
Artifact
What comes out at the end
Sketch: what the artifact looks like
Versioned archetype diagnosis with date, sources, owners, and next review.
Retain date, source, assumption state, and decision for every version of archetype diagnosis.
- archetype diagnosis as board or document
- Source and evidence register
- Decision and action log
system-archetypes-working-template.md
Plan System Archetypes around its domain steps and the concrete decision question.
System Archetypes: Worksheet
Question
To be confirmed
Desired outcome
To be confirmed
Scope
Full workshop Time: 90 minutes
Complete this worksheet on paper or in your own document during the work.
Preparation for this scope
Method setup
- Materials: Behaviour over time, causal variables and delays, past interventions, shared workspace, source links, and decision log.
- Roles: System owner · domain actors · facilitator experienced in loops
- Advance information: Collect Behaviour over time, causal variables and delays, past interventions in advance and mark open assumptions.
- Overall time needed: 90 minutes
- Setup: Prepare match behaviour over time to causal loops of a known archetype visibly and calibrate assessment terms before starting.
Prepare for the work steps
Plot pattern: Plot pattern
- Behaviour over time
- causal variables and delays
- past interventions
Select candidates: Select candidates
- behaviour curves
- causal variables and delays
- past interventions
Validate loops: Validate loops
- candidate comparison
- causal variables and delays
- past interventions
Change structure: Change structure
- validated loop map
- causal variables and delays
- past interventions
archetype diagnosis
| Subject | Variable · curve · horizon | Name · matching structure · alternative | Variables · polarity · delay | Structural change · indicator |
|---|---|---|---|---|
| archetype diagnosis |
- archetype diagnosis: Worked example
Enter only real input, sources, and decisions.
The Systems Thinker: Systems Archetypes
Plot pattern: Plot pattern
Expected artifact: behaviour curves
behaviour curves · source · uncertainty · next decision
Entry:
...
- Are horizon and measures consistent?
Select candidates: Select candidates
Expected artifact: candidate comparison
candidate comparison · source · uncertainty · next decision
Entry:
...
- Does every loop fit the real mechanism?
Validate loops: Validate loops
Expected artifact: validated loop map
validated loop map · source · uncertainty · next decision
Entry:
...
- Does the structure explain the time pattern?
Change structure: Change structure
Expected artifact: intervention hypothesis
intervention hypothesis · source · uncertainty · next decision
Entry:
...
- Does the action target the loop rather than the symptom?
Open questions and next steps
...
Method guide: https://methodatlas.meierhoff-systems.de/en/methods/system-archetypes/run-sheet
Example output
Concrete filled scenario, fictional example
Fictional example for orientation. Counts and timings describe this case and are not universal requirements.
system-archetypes-beispiel.md
Concrete filled scenario, fictional example
Archetype: Shifting the Burden. Symptomatic solution: contractors reduce backlog temporarily. Fundamental solution: remove product causes. Side effect: Product receives less causal knowledge, weakening the fundamental solution. Leverage: cause feedback and dedicated engineering capacity.
Pitfalls
Recognize symptoms and steer against them
Quick overview, the full text is in the matching phase in the flow
- Plot patternAn archetype is chosen for a similar story without checking loops and behaviour over time.View in phase
- Select candidatesAn archetype is chosen for a similar story without checking loops and behaviour over time.View in phase
- Validate loopsAn archetype is chosen for a similar story without checking loops and behaviour over time.View in phase
- Change structureAn archetype is chosen for a similar story without checking loops and behaviour over time.View in phase
Plot pattern
An archetype is chosen for a similar story without checking loops and behaviour over time.
Operationalise variables, check loop polarities, and test at least one competing explanation.
Select candidates
An archetype is chosen for a similar story without checking loops and behaviour over time.
Operationalise variables, check loop polarities, and test at least one competing explanation.
Validate loops
An archetype is chosen for a similar story without checking loops and behaviour over time.
Operationalise variables, check loop polarities, and test at least one competing explanation.
Change structure
An archetype is chosen for a similar story without checking loops and behaviour over time.
Operationalise variables, check loop polarities, and test at least one competing explanation.
Stop criteria
When to pause, resolve prerequisites, or choose another approach
Finished the method guide?
Go to the profile for purpose, similar methods, and sources or continue to the next method in the catalog.

