Drop-off · The reasons · Element
The stated reason
What the buyer says.
The part
What it is
Asked shortly after and by someone with nothing to gain, which changes the answer materially.
A follow-up question — what would have had to be different — produces more than the first answer does.
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.