The tenure check

Whether the people setting the vision will still be there.

The part

What it is

A horizon beyond the expected tenure of everyone who set it removes accountability entirely, which is occasionally the reason it was chosen.

It is not a reason to shorten the vision. It is a reason to name intermediate markers that fall within someone’s tenure.

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.

Expected tenure
Roughly how long the people setting it will be answerable for it.
Duration shared type
Overlaps horizon
Whether anyone setting the vision will still be there at the date.
Choice shared type
Interim markers
What falls inside that window instead.
Reference shared type