Channel economics · The spillover · Element
The interactions
Which channels affect which.
The part
What it is
Usually one direction dominates: awareness-building channels lift search and direct performance, rarely the reverse.
Observable in the correlation between spend in one and performance in another, with a lag.
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.