Growth horizons · The horizon map · Element
The drift
How the balance has moved over time.
The part
What it is
The near horizon wins by default, not by decision. Drift is how that shows up: a slow migration of resource toward whatever returns this year.
Tracking it is the only reliable defence, because each individual reallocation looks reasonable.
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.