Channel selection · The fit · Element
The verdict
Whether the channel is worth using for this audience and message.
The part
What it is
Both tests have to pass. A channel failing either is producing activity rather than effect, regardless of what the reported numbers say.
Where a channel fails on message fit, the answer is sometimes a different message rather than a different channel.
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.