Evolution · The continuity cost · Element
The overlap period
How long both stories would be in the market.
The part
What it is
External carriers, old coverage and long-standing customers hold the previous version for years, which means the overlap is not a transition phase but a condition.
Planning for it explicitly is what stops the change reading as confusion.
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.
Where the old persists
Which carriers and surfaces hold the previous version longest.
Text shared type
The other elements in the continuity cost
The accumulated
What has been built up in the current narrative.
LearnThe direct cost
What changing it would cost to execute.
Learn