Main idea

Ideas don't turn up during opening hours. A correction to the LinkedIn posts under way crosses your mind on a Sunday evening, far from the screen, and the two available options are equally bad: open a full session for three lines — reload the workspace, get back into it, close it again — or trust your memory until next time.

The third option is a mailbox: a file in the context where you drop a message without opening anything. It sleeps along with the rest. What distinguishes it from a note scribbled anywhere is what happens next: the opening of the following session provides for an explicit step — if the box isn't empty, treat its contents as an incoming message, then empty it. The Sunday-evening note is read as if it had just been typed, it produces its effect, and the box returns to zero.

The object you end up with is no longer quite a folder. A context you can leave a note for while it isn't switched on is an asynchronous correspondent: the channel no longer assumes both parties are present at the same time.

Why it matters

This closes the last leak in a setup built so that nothing lives anywhere but on disk. Everything else protects what is said during a session; what remained was what gets thought when there is no session, and that was the least recoverable part, since nothing keeps a trace of it.

It also reveals what opening a workspace really costs. If depositing an idea requires opening a session, the cost of opening becomes a filter on what gets in — and it doesn't filter by the value of the idea, but by the energy available on a Sunday evening.

Nuances and limits

A mailbox receives without sorting. A message dropped without the mental context that came with it can be illegible three days later — "revisit the second one" no longer says anything — and yet automatic handling at opening gives it the same weight as a clear instruction.

And emptying it after reading makes the original wording disappear. What remains is what the assistant made of it, not what was deposited.

Open questions

• What becomes of a message whose handling, at opening, contradicts the focus of the session that is starting?