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Sections
Purpose and impact are often collapsed into the same story. "We want to restore ecosystems" is purpose. "We changed this project, material flow, habitat, measurement or customer decision in this observable way" is impact. Impact looks backwards, and its job is proof. Our Story System structures the Impact Story as Before, Change, Now, Meaning. The structure gives the evidence enough context to mean something without making it sound more dramatic.
Begin with a baseline
A result becomes difficult to interpret when there is no before. The baseline sets out what was true before the intervention, what could not be done, what condition existed and what process was in place. A number without a baseline can look impressive while telling the reader almost nothing. The "before" gives the change a reference point.
Then comes the intervention. It should state what actually happened, what role the organisation played and which part of the wider change it can reasonably claim. This is where impact communication often starts to drift.
Sequence is not automatically causation. A company may raise capital after a rebrand. A partnership may follow a pitch. A standard may grow after a repositioning. Those timelines matter. They do not prove the communication caused the later event.
Evidence needs a visible state
The "now" is where the proof sits. It sets out what can actually be observed, what was measured, what was validated and what changed commercially, technically, operationally or ecologically. It helps to use a consistent evidence-state system.
Measured means observed directly through a defined method.
Validated means checked through an agreed process or third party.
Attributed means the evidence supports a relationship between the work and the result, within a stated boundary.
Projected means modelled or forecast from assumptions.
Targeted means intended in the future.
Aspirational means a direction or ambition without a claim that it will occur.
The exact vocabulary can change by field while the principle stays fixed. A future claim should look like a future claim.
Meaning should come after the evidence
The final part of the Impact Story is meaning. It explains what the change made possible, why it matters and which decision becomes different because this result exists. Meaning stays within the interpretation the evidence can genuinely support.
The order matters because the audience reaches the significance after seeing what happened. In the Story System we think of this as an order law, with evidence in the middle and meaning at the end. That keeps the story human without making the proof decorative.
Agency case studies need the same discipline
This matters in our own work as much as it does for clients. Fronterra's public investment round accelerated during the period after the new brand, website and investor materials went live. That timeline is relevant. Saying the rebrand raised the money would be a different claim.
A stronger case says what Brighter Future changed, what the client reported, what happened later and where the causal boundary sits. The company had operational credibility. The new system made more of that credibility visible. The investor material gave the case a clearer structure. The later fundraising trajectory belongs in "what happened next" and stays out of the causal headline.
Eeden gives us a different kind of evidence. The client reported that the pitch-development work directly contributed to securing a major Letter of Intent. That is a meaningful statement because the source is named and the claim remains narrow. We still avoid implying that the deck alone caused the outcome. Technology, relationship, timing and negotiation also mattered. Precision makes the proof stronger.
Collect impact before you need the case study
One reason impact stories become vague is that teams try to reconstruct them months later. The Story System uses an Impact Log for this reason. Capture the baseline, intervention, result, source, evidence status, limitation, who can verify it and what the result may mean while the information is still fresh.
That turns case-study writing from memory work into evidence work. It also makes it easier to distinguish a meaningful result from a good anecdote. The same discipline is useful for technical companies. A pilot result, customer commitment, operational improvement or ecological measurement should carry its status and source from the moment it is recorded, well before marketing needs it.
An impact story should make the evidence easier to trust
The strongest impact story sits between a spreadsheet and a triumphal narrative. It lets the audience understand what was true before, what changed, what can now be observed and why that change matters. It also shows where the evidence stops. A practical template therefore has six parts.
Before
What was true?
Change
What happened, and what role did you play?
Now
What can be observed or measured?
Evidence state
Measured, validated, attributed, projected, targeted or aspirational?
Boundary
What can this result not prove?
Meaning
Why does it matter for the audience or the next decision?
A credible impact story makes the case harder to dismiss because the audience can see exactly what the evidence carries.
Tell us what needs to move.
Bring the brief if it is clear. If it is unclear, tell us where the work is stuck.
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