Channel performance · The management cost · Element
The ratio
Management cost against contribution.
The part
What it is
The number that decides whether a small route is worth keeping. Many are not, and they persist because their cost is invisible.
A route below a threshold of contribution per hour of management is a candidate for simplification or exit.
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.