DIAG-11 · Diagnosis · Invariant: holds by construction, no expiry
Subset counts cannot invert
The law
Under one consistent counting rule, a defined subset's count cannot exceed its superset's over identical scope and window; any inversion is a counting fault, not behaviour. Absent a shared rule, a nonzero cross-system gap alone proves nothing.
Scope
Verify the subset relation is definitional before alerting, conversions-per-click, view-through, and cross-device pairs are NOT subsets. Both counts must be exact (unsampled, unmodeled).
What this licenses you to do
Hard-alert on any inversion of an exact definitional subset pair inside one counting system; across unlinked systems, alert only on breaks in a source's historical gap ratio, never on the gap existing.
Riibon's own analysis is held to these laws
The laws on this site are a public subset of the rulebook Riibon's analysis works to. Before a metric movement is called a market event, the order of checks they set has to rule out the measurement first.
Ask the Riibon app why a number in your account moved, and see which checks it ran first. Access starts with a short call: we look at your ads together, then run them for you or set the app up with you.