DIAG-4 · Diagnosis · Heuristic: strong prior, re-verify periodically
Steps are code; drifts are markets
The law
KPI aggregates over many independent buyers move as drift plus noise; code, config, and platform-policy changes switch atomically. Absent a known discrete market event, a step discontinuity implicates a system change dated to the step.
Scope
Volumes where a step is distinguishable from noise; check enumerable discrete market events (launches, stockouts, price changes, PR) before invoking the law.
What this licenses you to do
On any step: diff deploy timestamps, tag/config edits, feature flags, and platform policy dates against the step date; check whether the step aligns to a data boundary (midnight, week start) versus mid-stream.
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.