Whether it works · The customer measure · Element
The satisfaction
Whether customers report a better experience.
The part
What it is
Compared between the personalised group and the control, which is the only comparison that isolates the effect.
A fall in satisfaction alongside a rise in conversion should stop the change rather than being reported as a mixed result.
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.