Institutional Memory Without Evidence Is Just Folklore
Organisations love saying they “know” things. We know that channel never worked. We know that customer hates discounts. We know the last agency tested that already. We know why the tracking broke. The problem is that, surprisingly often, nobody can show the evidence. The person who knew has left, the deck is six years old, the email thread is buried, and the original decision has been compressed into a sentence that gets repeated until it becomes accepted truth.
That is not institutional memory. It is folklore. Real organisational memory has always involved more than storing information: research on organisational memory describes it in terms of how knowledge is acquired, retained and retrieved, while work on organisational memory systems looks specifically at the mechanisms organisations use to collect, store and access experiential knowledge. The missing ingredient in many modern systems is provenance: the ability to show where something came from, when it was created, who changed it and what happened to it afterwards. NIST describes provenance as the historical, attributed and documented record of a data asset, including its origin and alterations.
If the organisation cannot get back to the evidence, it has remembered the conclusion and forgotten the reason.
That distinction matters more now that AI can turn scattered material into polished answers almost instantly. A confident sentence such as “Broad match performed poorly” might be useful, but it is only institutional knowledge if someone can inspect what sits underneath it: which campaign, which dates, what budget, what comparison, what caveats, whether the test was ever completed, and whether a later result contradicted it. Otherwise the organisation has simply replaced human folklore with machine-generated folklore.
An evidence-backed institutional memory system should therefore do something very simple and surprisingly rare: keep the conclusion connected to the evidence that earned it. Not just the file. The trail. What happened, what changed, what was decided, what outcome followed, and what the organisation eventually learned. Storage keeps records. Search helps retrieve them. Memory begins when the organisation can still explain why it believes what it believes.