Continuity of state · The visibility · Element
The summary
Whether the context is digestible.
The part
What it is
A full history is not usable in a thirty-second window. Three lines summarising what matters is.
The summarisation is what turns available data into usable context.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.