The profile · The evidence · Element
The date
When the evidence was gathered.
The part
What it is
Profiles age quietly. One written three years ago describes a market that has moved and a buyer whose situation has changed.
A date on the profile is what makes staleness visible without anyone having to challenge it.
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.