The transition

How the change was handled with people who knew the old story.

The part

What it is

Acknowledging the previous narrative and explaining what changed carries the accumulated equity forward; replacing it silently spends it.

The transition period, during which both versions are in circulation, is longer than anyone plans for.

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.

How announced
How the change was explained, if at all.
Text shared type
Transition period
How long both versions were in circulation.
Duration shared type
Continuity kept
Whether the old narrative was carried forward or replaced.
Choice shared type