Assumptions and scenarios · The assumption register · Element
The rating
How certain each assumption is, and how much rests on it.
The part
What it is
Most assumptions are safe or trivial. The handful that are neither certain nor unimportant are where the real risk of the plan sits.
Rating both axes is what separates the two, and it is a fast exercise once the list exists.
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.