The knowledge that leaves when someone resigns — and how to systematize it.

There's a scene that keeps repeating: the person who “knows how it's done” goes on vacation, changes roles or resigns, and suddenly the team discovers how many decisions went through them. It wasn't in any document. It was in the way they replied, quoted, said no.

That is expert knowledge: criteria, exceptions and ways of working that make the service good. And in most service companies it isn't systematized, because there was never time.

Where that knowledge lives today

• In chats and voice notes. Explanations given once on WhatsApp that nobody could find again.
• In old emails. The perfect answer to a hard case, buried in an inbox.
• In meetings. Criteria repeated out loud every time someone new joins.
• In memory. “Ana knows that” — and Ana is busy.

As long as it lives there, every new hire costs months, every absence stalls decisions, and any automation you try will inherit the ambiguity.

Capturing it without stopping the operation

Capture shouldn't be a three-month documentation project. Three light practices work better:

• Process interviews. Short conversations with the key person about real cases: “what did you do with this client and why?”. They're recorded, transcribed and turned into criteria.
• Living documents. One guide per process that gets updated every time a new exception appears, instead of a manual that ages the day it's printed.
• Explicit decision criteria. When to approve, when to escalate, what is never promised. Few rules, but the ones that make the service consistent across people.

AI helps a lot at this stage — it transcribes, summarizes, detects contradictions between what two experts say — but a person validates the final criteria.

From document to system

Once the knowledge exists in writing and the team consults it, the natural question appears: is it worth turning into an internal assistant? The answer is yes when three things are true: the questions repeat, the answers are approved, and someone is responsible for keeping them current.

An internal assistant that answers based on approved documents doesn't replace the expert: it frees them from answering the same thing for the tenth time, and keeps a record of what was asked and what was missing.

Less dependence on human memory doesn't mean less judgment. It means the judgment no longer leaves with the person.

Where to start

Pick the process where dependence hurts most — the one that stalls when a person is out — and do a single process interview this week. What comes out of it will almost certainly be your company's first living document.