Channel economics · The spillover · Element
The guard
What prevents the budget draining towards the measurable.
The part
What it is
A fixed floor on the demand-creating share, protected the way any deliberate allocation has to be.
The alternative is a mix that optimises itself into short-term efficiency and long-term decline, which happens slowly enough that nobody connects the two.
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.