Meadows on leverage points
📚SOURCE
💎PERMANENT NOTES
🧵SYNTHESIS
Paraphrase, not quotation: the whole essay, 📰 Leverage Points - Places to Intervene in a System.
Meadows ranks twelve places to intervene in a system, from weakest to strongest. At the bottom are numbers: rates, budgets, targets, dates. They are where almost all the arguing happens and they rarely change behaviour, because the loops that produced the old number will produce it again. In the middle are the loops themselves: the strength of the corrections, the length of the delays, and above all who gets to see what. Near the top are the rules, the power to change the rules, and the goal the whole thing serves. At the very top sits the paradigm, the set of assumptions nobody states because nobody thinks they are assumptions.
She adds a warning she took from Jay Forrester: people often find the right lever and push it the wrong way.
Everything I negotiated in January was a parameter.
✨KEY IDEAS
Twelve to ten are the physical things: numbers, buffer sizes, and the layout of stocks and flows. Expensive or slow to change, and low in effect.
Nine to seven are about loops: the length of delays, the strength of balancing loops, the gain of reinforcing ones.
Six is information: who has access to which signal. Her example is an electricity meter moved from the cellar to the hall, after which households used noticeably less.
Five and four are the rules, and the ability of a system to rewrite its own structure.
Three to one are the goal, the paradigm, and the ability to hold a paradigm loosely.
📝READING NOTES
How the essay is built
She tells it as a confession: the list was first scribbled on a flip chart in a meeting where she had lost patience, and she presents it as an invitation to think and not as a law. I like that the most rigorous thing I read this month admits to being a first draft.
The twelve, squeezed
I could not hold twelve in my head, so I compressed them. The working version is 🧭 Leverage points as a ladder, and the concept is filed under 🧩 Leverage points.
| Where | What it is | My week |
|---|---|---|
| Bottom | Numbers and physical structure | Dates, scope, headcount |
| Lower middle | Delays and loop strengths | How long a test takes to tell us anything |
| Upper middle | Information and rules | Who sees the exception count, and when |
| Top | Goals and paradigms | Ship on the 18th against be usable on a Tuesday |
What I think she gets right
The meter in the hall. Same houses, same price, same people. The only change was where the dial sat. Every product I admire does this: it moves a number to where the decision is made.
The wrong direction. Her borrowed observation is that we tend to push the right lever backwards. We respond to a late project by adding people and status meetings, which lengthens the delays that made it late.
Where I am less sure
She says herself the order is loose. My doubt is practical: a product manager cannot reach the top three rungs on a Monday. Telling a team to change the paradigm is advice for people with tenure. What I can reach is rung six. I can change what people see.
Also, parameters are not always weak. She notes the exception: a number that tips a loop from one regime into another matters a great deal. A load volume that crosses the point where the queue stops draining is a parameter and it is the whole story.
What it produced
💎 Changing a parameter is the weakest way to change a system. First map built the same afternoon.
Added 29 April: the reorganisation was announced today as a change to structure. Reading the slide again, most of it is boxes and reporting lines. The goals on the last page are the part to watch.
Related notes
Reading record
- Favourite: yes, one of the few I would hand to someone else
🗣️IN SHORT
- In : Leverage Points: Places to Intervene in a System, the full essay
- Meadows argues that : the places where we usually intervene (numbers) are the least effective, and that leverage rises through loops, information and rules to goals and paradigms
- by stating that : parameters leave the governing loops intact, while a change to who knows what, who decides, or what the system is for alters the behaviour of everything below it