THE IDEA
The invisible frame
Every system has an edge - a line between what’s inside and what’s outside. But that line isn’t a fact about the world. It’s a choice someone made. And that choice shapes everything that follows: what you pay attention to, what you measure, what you try to change, and what you never even notice.
Draw the boundary around a school, and poor results look like a teaching problem. Widen it to include the neighbourhood - poverty, housing, family stress - and the same results look like a social problem. Widen it further to include funding policy, and it looks like a political problem. The school hasn’t changed. The boundary has.
This is why boundary-setting is one of the most powerful and most invisible acts in any system. Whoever draws the boundary decides what counts. In a project, in a strategy, in a policy decision - the moment someone says “that’s outside our scope,” they’ve drawn a boundary. Everything excluded from that scope becomes someone else’s problem, or nobody’s problem, or a surprise that arrives later as an “unintended” consequence that was only unintended because the boundary hid it.
IN PRACTICE
What’s in, what’s out, and who decided
A city redesigns a busy junction to improve traffic flow. The boundary is the junction itself. Cars move through faster, the problem is “solved.” But the faster traffic now speeds through residential streets on either side, making them more dangerous for pedestrians and cyclists. The boundary excluded the streets around the junction, so the harm there was invisible to the people who designed the fix.
A doctor treats a patient’s back pain with medication. The boundary is the symptom. The pain reduces. But the patient’s back pain was caused by stress, poor sleep, and a sedentary job - all outside the boundary of the consultation. The medication manages the symptom; the cause continues untouched. A wider boundary would suggest a different kind of intervention entirely.
A team is asked to improve customer satisfaction scores. They draw the boundary around their own department - faster response times, friendlier emails, better scripts. Scores improve slightly. But the biggest driver of dissatisfaction is a product flaw that sits in another department’s territory. The team optimised everything inside their boundary and never touched the thing that mattered most, because it was outside it.
WORKING WITH THIS
Redraw before you act
Before starting any piece of work, ask: what’s the boundary here, and who drew it? If you inherited the scope from someone else - a brief, a job description, a strategy document - that boundary reflects their assumptions about what matters. Those assumptions might be right. But they might also be convenient, or habitual, or outdated.
Try deliberately widening the boundary, even as a thought experiment. Ask what’s just outside the current scope that might be driving the behaviour inside it. If a problem keeps recurring despite good work within the boundary, that’s a strong signal the boundary is too tight. The cause is probably outside it.
And pay attention to who gets to draw boundaries in the first place. In most situations, the people with the most power set the scope - and the people most affected by what’s excluded have the least say. Noticing this is the first step toward more honest problem-solving.
THE INSIGHT
The edge is the argument
A boundary isn’t a neutral line on a map. It’s a claim about what matters and what doesn’t. Change the boundary and you change the problem - and very often, you change who’s responsible for it.
RECOGNITION
Knowing it when you see it
You’re dealing with a boundary problem when a solution works perfectly within its scope but creates trouble just outside it. When “that’s not our department” keeps coming up. When the same issue keeps being solved in isolation by different teams who never talk to each other. When someone says “that’s out of scope” and you feel a quiet unease, because the thing being excluded might be the thing that matters most.