2024 — External conditions invalidated the operating model
The decision failed because external conditions changed beyond assumptions.
The model no longer matched reality.
Failure Type: → External Shock
Crux: → Model Breakdown
Case
External conditions shifted beyond the assumptions embedded in the decision model.
Decision Error
The model was not updated after environmental change.
Why It Failed
The system continued operating under invalid assumptions.
Trigger
External changes exceeded the boundaries of the original model.
Missed Signal
Early indicators of environmental shift were ignored.
Rule
If the model no longer matches reality, discard and rebuild.
Compare / Similar Failures
Often confused with:
→ Strategy drifted beyond original constraints
Key Difference:
Strategy Drift is caused by internal execution deviation, while Model Breakdown is caused by external changes.
Boundary:
If misalignment is internal → Execution Drift.
If misalignment is external → Model Breakdown.
Related Cases
→ The expansion had no exit path
This case belongs to: