Heuristic
Prefer interventions that alter feedback, not just output
Fixing a stock once may not change the flows that recreate it.
When it fits
- When the same symptom returns after repeated cleanups.
When to avoid it
- Leverage-point and information-value heuristics are prompts, not guaranteed effect sizes. Test interventions, monitor side effects and stop when evidence changes.
Why it matters
After removing the immediate backlog, defect or debt, identify and change the inflow, outflow capacity or feedback rule that regenerates the condition.
An example
A one-time duplicate cleanup is paired with upstream uniqueness validation and monitoring of new duplicate inflow.
Check your result
The system has a mechanism that reduces recurrence, not only a cleaner current state.
Keep this limit in mind
- Leverage-point and information-value heuristics are prompts, not guaranteed effect sizes. Test interventions, monitor side effects and stop when evidence changes.
Connected ideas
Useful withPrice the next piece of information before researching it
Evidence and sources
Supports
System dynamics work emphasizes that well-intended interventions can be defeated by feedback-driven system responses, a pattern described as policy resistance.
A qualitative feedback story is not enough; links, delays and predicted behavior still need empirical or operational checking.
System Dynamics Modeling: Tools for Learning in a Complex World · Abstract