A Context can be very well documented and still be incomplete.

It can hold the right standards, the right articles, the right pages of documentation, the right customer interview transcripts. It can have access to a clean knowledge base, well-sorted user feedback, properly tagged support tickets.

And it can still be missing something essential: the fine-grained understanding the PM carries around.

No hidden grand theory. Just everything that builds up along the way — a remark made in passing, a nuance that only landed after three conversations, a customer worry no transcript shows, a political tension, a reading nobody has written down yet.

That is exactly why you need session sources.

What a Context is

A Context is a workspace bounded by a mission.

It brings together a goal, a focus, directives, sources, notes, drafts and sometimes deliverables. Its job is not just to store information. It gives an AI the right scope to work in, the right references, the right constraints and a memory it can actually use.

Put differently: a Context saves you from starting over at every conversation.

But to be genuinely useful, it cannot only take in documents. It also has to pick up what the team learns as the work goes along.

Three families of input

A Context feeds on several kinds of input. Mixing them up leads straight to bad workflows.

The first family is documentary curation.

Books, articles, standards, product documentation, reference frameworks, good practice. These sources give the Context command of the by-the-book answer. They do not land in the right place on their own: you have to choose them, add them, keep them, then ingest them.

The second family is industrialised user feedback collection.

Full interview transcripts, in-app feedback, support tickets, structured feedback, verbatim quotes gathered in a CRM or a product tool. Here part of the collecting can be automated. These traces already exist as documents or as objects you can work with.

The third family is unwritten knowledge.

It is what the PM knows, understands, senses or connects, but which does not yet exist as a stable source. That is where a session source earns its place.

What a session source picks up

A session source is not one more document.

It is a channel for pouring knowledge into the Context while it is still informal.

Sometimes that knowledge turns up as a long conversation with the AI. The PM explains the customer, reworks a phrasing, corrects an assumption, adds detail. The session then becomes real raw input for the work.

But it is not always that substantial.

A session source can just as well take in a small idea that surfaced afterwards. A remark overheard in a hallway. Something a customer said at the end of a call. A tension the PM is only beginning to name. A nuance that does not warrant a whole document, but deserves not to vanish.

A session source catches useful thinking before it becomes a document.

Why accumulation changes everything

One small remark on its own can look thin.

It does not always justify a ticket. It does not necessarily deserve a summary note. It does not always show up in a transcript. In a classic information system it would usually be lost, or stored somewhere without ever amounting to much.

But dozens of small points building up over time can change the quality of a Context.

They bring out patterns. They firm up hunches. They reveal nuances. They let you see that a customer is not simply asking for a feature, but trying to reduce a risk, hold on to control, avoid an internal tension or work around an organisational constraint.

That is where a Context does something plain storage never will.

It can reread, connect, compare, stabilise. It can turn an accumulation of micro-signals into notes, assumptions, angles of analysis or better-framed decisions.

So what counts is not the one small remark.

It is what all those small remarks add up to, inside a context that knows why it keeps them.

What it is not

A session source is not a full transcript.

If a meeting or an interview has been transcribed, the transcript is an immutable source. It belongs in the context as it stands.

Nor is a session source a meeting note.

A meeting usually has a scope of its own: a project, a feature, a customer, a decision. Its note or its transcript can feed the context it belongs to. That does not automatically turn the note into a session source.

A session source is not a raw chat log either.

The whole history of a conversation is not meant to become a source. What counts is what gets deliberately poured into a Context that has a goal and a focus.

And a session source is not a document store.

A document store keeps the references and the traces. A session source catches what is taking shape around those references and around what happens on the ground.

What it takes to work

A session source is only worth something if it stays framed.

First, it needs a goal and a focus. Without them it turns into a dumping ground. With a good focus, it catches the useful input without settling its final form too early.

Then you have to keep the raw source apart from the knowledge you have stabilised. The session source holds the raw input. The notes are where you formalise whatever deserves to be reused.

Finally, it needs an ingestion that can handle repetition.

Saying the same thing three times with three different nuances is not a problem. That is often how an idea ripens. Ingestion is not there to duplicate three notes, but to accrete the nuances into finer knowledge.

So a session source is less about filing things away than about letting them ripen.

Giving the Context a channel to learn from people

Organisations are getting better and better at producing sources.

They document, transcribe, centralise, index, automate the collection of user feedback. All of that is necessary.

But part of the useful knowledge stays in people's heads.

Not because it could never be written down. Because it is born in interpretation, in conversations, in weak ties, in details too small to turn into documents on their own.

So the PM should not only supply the Context with sources. They should also be able to feed in, bit by bit, their understanding of what happens on the ground.

A well-fed context does not just know what the sources say.

It starts to understand what the team has learnt.