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Iceberg Model

The default response to a problem is to react to the visible event. The iceberg model resists that by moving the problem down four levels, from the tip toward the mass under the water: the event (what just happened), the pattern (what has been happening over time), the structures (the policies, incentives, resource flows, and feedback loops that generate the pattern), and the mental models (the beliefs and assumptions that hold those structures in place). Descending past the event is the work, because structure and mindset are where higher-leverage interventions sit. Each level is paired with the intervention it implies: event-level fixes are reactive and low-leverage, structure- and model-level fixes are higher-leverage and slower. The output is an iceberg, not a discussion.

When to Use

• A problem keeps recurring despite repeated event-level fixes, hinting at a structural cause.
• A symptom is being treated as a one-off when it is the latest instance of a pattern.
• The real question is "why does this keep happening, and where do we actually intervene?"
• There is appetite to consider structural or mindset interventions, not only quick reactive fixes.

When NOT to Use

• A simple, linear, single-cause problem. One event, one obvious cause, a known fix. Forcing four levels manufactures false depth; say it is a simple cause and stop.
• Mapping forward consequences ("if we do this, then what happens next?"). That is the futures wheel, which maps outward to effects. The iceberg maps downward to causes.
• Auditing one person's reasoning from data to conclusion. That is the ladder of inference check. The iceberg is about systemic levels of causation, not one person's inference chain.
• As a ritual that fills four labeled boxes with no honest descent and no intervention paired to each level. A tidy diagram with no leverage is theater.

Instructions

When asked to build an iceberg, follow these steps:

1. State the event. Name the visible occurrence in one or two sentences, as it would be reported. If it is a genuine one-off with a single obvious cause, say so and stop; the iceberg is the wrong tool here.
2. Find the pattern. Ask "what has been happening over time?", not "what just happened?". Describe the trend, frequency, or history this event belongs to. If there is no pattern, recheck whether this is really a systemic problem.
3. Surface the structures. Identify the policies, incentives, comp plans, resource flows, ownership boundaries, and feedback loops that would generate that pattern. This is the load-bearing level; do not skip it to get to mindset.
4. Name the mental models. Surface the beliefs, assumptions, and shared stories that make the structures feel normal and keep them in place. State them as the system would, even when uncomfortable.
5. Pair each level with an intervention and its leverage. For each level, name the intervention it implies and tag its leverage: event-level is reactive/low, pattern-level is managerial, structure- and model-level are higher and slower. Call out the highest-leverage intervention.
6. Emit the iceberg and a short summary. Produce the artifact in references/TEMPLATE.md: a one-paragraph "what is really going on, and where to intervene" summary above the four-level iceberg with its paired interventions.

Output Format

Use the template in references/TEMPLATE.md. The deliverable is the filled four-level iceberg plus its summary, not a prose essay.

Quality Checklist

Before finalizing, verify:

• [ ] All four levels are present and distinct: event, pattern, structures, mental models (not the same idea reworded four times).
• [ ] The descent actually reaches structures and mental models; it does not stop at event or pattern.
• [ ] Mental models are stated as honest beliefs/assumptions, including uncomfortable ones, not restated structures.
• [ ] Each level is paired with the intervention it implies, tagged by leverage, and the highest-leverage intervention is called out.
• [ ] If the problem is genuinely a simple single cause, the skill said so and stopped rather than manufacturing depth.
• [ ] The output is the iceberg artifact, not prose.
• [ ] No overclaiming: leverage is a judgment for argument, not a measured or proven effect (see evidence/dossier.md).

Evidence

Tier P. The iceberg is an established systems-thinking and organizational-learning tool (Senge, The Fifth Discipline, 1990; Meadows on leverage points, 1999/2008), valued for pushing analysis below the event level to structure and mindset, where higher-leverage interventions sit. Its validation is qualitative and pedagogical; there is no strong controlled evidence that it produces better outcomes than ordinary root-cause analysis, and "higher-leverage" is a judgment, not a measurement. Evidence is transferred from human practice, not AI-validated. Full grading, sources, and caveats: evidence/dossier.md.

Examples

See references/EXAMPLE.md for a completed iceberg on a real decision.