A Sensemaking Model for Navigating Complexity, Making Better Decisions, and Leading Through Uncertainty
Dave Snowden · Cynefin Centre for Organizational Complexity
The habit of reaching for solutions before understanding context is the most common — and most costly — mistake in leadership.
Cynefin (Welsh: ky-NEV-in) — "habitat" or "place of your multiple belongings"
Created by Dave Snowden at IBM, rooted in complexity science and cognitive anthropology.
It's a sensemaking framework, not a classification matrix.
The core insight: Same action succeeds in one context, fails in another. Context determines method. There is no single best practice that works everywhere.
The domain of known unknowns. Clear cause-effect relationships. Repetition.
When in doubt: follow the process. Don't reinvent the wheel.
| Situation | Appropriate Response |
|---|---|
| Processing a standard invoice | Follow AP workflow; escalate only exceptions |
| Onboarding a new hire (paperwork) | Run the standard checklist |
| Compliance reporting (quarterly) | Use the prescribed template and process |
| Scheduling recurring meetings | Standard calendar and room process |
| Equipment failure under warranty | File warranty claim by the book |
⚠️ When leaders apply "visionary thinking" to routine processes, they create unnecessary variability and confusion.
The domain of unknown unknowns that can be discovered. Cause-effect exists but requires expertise to find.
Ask: "Who has done this before and what did they learn?" — experts exist.
Legacy system migration requires expert analysis of dependencies. Right answer exists but takes investigation to find.
Symptoms suggest multiple possible causes. Needs differential diagnosis by an experienced clinician.
Multiple debt instruments, tax implications, stakeholder interests. Expert analysis needed to optimize.
Multiple potential root causes. Requires structured investigation: root-cause analysis, DOE.
The distinction between "complicated" and "complex" is the most important — and most frequently confused — boundary in the framework.
The domain of emergence. Cause-effect can only be understood in retrospect. Unknown unknowns dominate.
This is where most strategic change initiatives fail — because leaders treat them as complicated.
The fundamental leadership move in complex terrain:
Key difference from Complicated: in Complicated, analysis comes before action. In Complex, action comes before analysis — because you can only analyze what has already happened.
| Instead of this (Complicated thinking) | Try this (Complex thinking) |
|---|---|
| Develop a comprehensive 3-year strategy | Run a 6-week pilot with 3 possible directions |
| Analyze the market until confident | Approach 10 real customers and see what happens |
| Design the perfect organizational structure | Create a team that tries a new approach for one quarter |
| Plan the change fully before acting | Do something small, watch the response, adjust |
| Identify all risks and mitigate upfront | Make failure small enough to learn from, not large enough to harm you |
The domain of crisis and emergency. No clear cause-effect. Urgent action required.
First: stop the bleeding. Then figure out what kind of problem you have.
Multiple deaths reported. Immediate action required: halt production, communicate publicly, mobilize crisis team. No time for committee analysis.
Revenue bleeding every hour. Restore first, root-cause analysis second. The probe is the fix.
Team is panicking, clients are asking questions. Immediate stabilization before strategic planning.
Algorithmic cascade selling. Trying to "understand" the market delays response. Act to stabilize first.
Confusion. Unclear which domain applies. Mixed signals, competing narratives.
When you don't know which domain you're in:
Most strategic planning meetings happen in disorder. The first task is to get enough clarity to know whether this is a complicated problem or a complex one.
No domain is permanent. Systems shift. The key skill is continuous re-diagnosis:
Domain error: The shuttle program had evolved from "complicated" to "complex" (new failure modes emerging from known causes) but was still being managed with complicated-domain thinking. Warning signs were analyzed as if they could be fully understood before acting. They couldn't. Decision-making in a complex system requires acting on partial information.
Domain: Complex, over years. Netflix ran continuous safe-to-fail probes: unlimited vacation policy → observed → adjusted. No master plan. They sensed the system's response and responded accordingly.
Transition: Complicated → Complex. As Toyota scaled globally, standardized processes hit their limits. They moved to a probe-sense-respond model (Genchi Genbutsu — go see for yourself) to handle emergent quality issues.
Cynefin Framework · Dave Snowden · Cynefin Centre