Reachability · The gap · Element
The required position
What the vision requires at the horizon.
The part
What it is
Derived directly from the future state, so that any softening of the vision shows up here immediately.
Where the vision is qualitative, a quantitative equivalent is needed or the gap cannot be sized at all.
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.