Reading the signal · The categories · Element
The unfitting
Comments that do not fit any category.
The part
What it is
A growing unfitting pile is the signal that the category set needs revising, and it is the only honest reason to change it.
Reading them directly is worthwhile: new problems arrive here before they arrive anywhere else.
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.