Long-range ambition · The arrival test · Element
The lock
What it takes to change the test, and what has been changed so far.
The part
What it is
The test protects the ambition from being softened. That protection only works if changing the test is harder than missing it.
Recording every change is the mechanism: a test revised twice has told you something about the organisation, not about the ambition.
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.