What gets reported · The purpose · Element
The age
How long it has existed.
The part
What it is
Age combined with usage is the useful cut. An old report that is still read is an asset; an old one that is not is estate.
A report older than everyone who receives it is worth a specific look.
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.