Long-range ambition · The arrival test · Element
The threshold
The numbers that separate arrived from not arrived.
The part
What it is
A threshold set at the same time as the ambition carries authority a later one cannot. It was chosen before anyone knew what would be convenient.
Partial arrival is worth defining too, because most long ambitions land partly.
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.