Drop-off · The losses · Element
The trend
Whether drop-off at each stage is getting better or worse.
The part
What it is
A stage deteriorating slowly is invisible in any single period and obvious across a year.
Deterioration usually has a cause with a date attached — a change to a page, a process, a team or a competitor’s offer.
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.