Testing changes · The result · Element
The guardrail check
Whether anything else got worse.
The part
What it is
Checked before shipping, since a win on the primary measure with a loss on a guardrail is not a win.
The most common breach is support contacts, which nobody watches during a conversion test.
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.