Question
Ask whether you are changing a parameter or a rule
Parameter changes may leave the system's behavior-generating structure intact.
When it fits
- When repeated tuning of targets, thresholds or staffing produces only temporary relief.
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.
A question to ask
What exactly is being changed? · Which feedback loop stays intact? · Would changing information, rules or goals alter the recurring behavior? · What is the smallest safe structural test?
Why it matters
Classify the intervention: number, buffer, flow, information, feedback, rule, power, goal or deeper assumption. Then ask whether a structural lever is more appropriate than another parameter tweak.
An example
Raising the defect threshold again changes a number; changing who sees defect evidence before release changes an information flow and decision rule.
Check your result
The intervention is classified by mechanism rather than described only by size.
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 withChange information flow before adding another control
Evidence and sources
Meadows' leverage-points framework widens intervention search from parameters and buffers toward information flows, rules, goals and paradigms while explicitly cautioning that the list is not a recipe.
The proposed ordering is a systems-thinking heuristic, not a universal causal effect-size ranking.
Leverage Points: Places to Intervene in a System · Places to intervene and concluding caveats