Points of difference · The accepted trade-off · Element
The cost
What the trade-off actually costs in demand.
The part
What it is
Customers lost, deals not entered, segments not served. Knowing the number makes the trade defensible rather than merely stated.
A trade-off with no measurable cost is probably not a real one.
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.