The signals · The accuracy · Element
The cost of wrong
What happens when it is incorrect.
The part
What it is
Mildly irrelevant content is tolerable. An assumption about someone’s situation, circumstances or identity is not.
The threshold for using an inference should follow the cost of being wrong rather than the accuracy alone.
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.