# Systems Thinking

> Structural analysis of complex systems grounded in Donella Meadows, Peter Senge, Jay Forrester, Russell Ackoff, and the Santa Fe Institute tradition. Five workflows: Iceberg, CausalLoop, FindArchetype, FindLeverage, ConceptMap. [WHAT] Systems-thinking skill for resilience work, democracy, hybrid threats, policy work. Core axiom: "behaviour is generated by structure — events are visible, structure is not." At Extended+ effort on recurring behaviours or cross-system coupling, systems-thinking is the structural lens, not optional. [WHEN] Use when: systems thinking, causal loop, feedback loops, archetypes, leverage points, iceberg model, unintended consequences, fix the system, structural cause, "why does this keep happening?", recurring problems, systemic questions, second-order effects. NOT for: incident causal chains (use root-cause-analysis). [LANGUAGE] Configurable. Output structured with mermaid diagrams where relevant.

- Skill: `carlheath/systems-thinking` (Agent Skill)
- Install (CLI): `npx skillmds@latest add carlheath/systems-thinking`
- Raw SKILL.md: https://api.skillmd.com/api/skills/carlheath/systems-thinking/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: carlheath (https://skillmd.com/u/carlheath)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/carlheath/systems-thinking

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# Systems Thinking

**Role:** structural analysis of complex systems.
**Tradition:** Meadows / Senge / Forrester / Ackoff / Santa Fe Institute.

## Five workflows

### 1. Iceberg (Iceberg model)

Layers downward: **Events → Patterns → Structures → Mental Models**.

```
🌊 What happened? (Events — visible)
    ↓
📊 How often does it happen? (Patterns — tendencies)
    ↓
🏗️ What in the structure produced it? (Structures — institutions, incentives, rules)
    ↓
🧠 What mental models support the structures? (Mental Models — assumptions)
```

**Use for recurring problems:** "Why does X keep happening?" The Iceberg reveals events as symptoms; the solution lies in structures or mental models.

### 2. CausalLoop (Causal Loop Diagrams)

Build diagrams with:
- **Reinforcing loops (R)** — self-amplifying (positive feedback)
- **Balancing loops (B)** — self-stabilising (negative feedback)

Output as a mermaid diagram:

```mermaid
graph LR
    A[Reliance on social media for news] -->|+| B[Algorithm-driven attention]
    B -->|+| C[Polarisation]
    C -->|+| A
    C -.->|R1| A
```

### 3. FindArchetype (10 canonical archetypes)

Match behaviour to known patterns:

1. **Limits to Growth** — growth hits a ceiling
2. **Shifting the Burden** — symptom-fix replaces root action
3. **Tragedy of the Commons** — shared resource overused
4. **Fixes That Fail** — short-term fix worsens the long term
5. **Eroding Goals** — goals lower when things get hard
6. **Escalation** — A's reaction provokes B, and vice versa
7. **Success to the Successful** — winners get more resources
8. **Drifting Goals** — gradual standard erosion
9. **Growth and Underinvestment** — growth without capacity investment
10. **Accidental Adversaries** — partners become opponents via misunderstanding

Identify the archetype → apply the canonical intervention.

### 4. FindLeverage (Meadows' 12 leverage points)

Ordered weakest → strongest:

12. Constants & parameters (weakest)
11. Buffer sizes
10. Stock-flow structures
9. Delays
8. Balancing feedback loops
7. Reinforcing feedback loops
6. Information flows
5. Rules
4. Self-organisation capacity
3. Goals
2. Paradigm
1. Power to transcend paradigms (strongest)

**Application:** policy work should aim for layers 5-1 for real impact, not 12-7 (which is what politics often does).

### 5. ConceptMap (Novak-style entity-relationship)

Hierarchical concept map:
- Overarching concept on top
- More specific downward
- Linking phrases between concepts ("causes", "amplifies", "part of")

Output as mermaid or hierarchical list.

## Domain examples

| Question | Workflow | Expected outcome |
|----------|----------|-------------------|
| "Why does digital transformation keep failing?" | Iceberg | Mental models about "tech = solution" rather than organizational change |
| "Polarisation around social media" | CausalLoop | R-loop: attention → algorithm → polarisation → more attention |
| "Decline of defense spending pre-crisis" | FindArchetype | Eroding Goals (target lowered over decades) |
| "How to influence digital sovereignty in policy?" | FindLeverage | Aim for layers 5-3 (rules, goals, paradigm) not 12-10 (more money) |

## Integration with other skills

- **thinking-firstprinciples** to deconstruct mental models in Iceberg
- **thinking-redteam** to stress-test interventions from FindLeverage
- **root-cause-analysis** for incident cause chains (complementary — RCA is linear, systems-thinking is cyclic)

## Output format

Mermaid diagrams for CausalLoop + ConceptMap. Structured markdown for Iceberg + FindArchetype + FindLeverage.

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🎯 COMPLETED: [SKILL:systems-thinking] [systems analysis of X]
🗣️ CUSTOM COMPLETED: [SKILL:systems-thinking] [Systems analysis done]