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What a claim record is How to read this page

One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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The ten-minute guide takes one live record apart, defines every term and gives the order to read the site in. Start here →

MWITA-MB-2026-002 · Evidence A · P1

Meridian recommends using incrementality experiments to calibrate channel ROI priors, while warning that experiment and MMM must target the same causal quantity and time/channel scope.

Counterevidence & uncertainty

A precise experiment can still miscalibrate a model if population, treatment, window, channel definition or outcome differs.

What would change the reading

Update with new calibration-validation studies or changed Meridian methodology.

Primary routes

  1. MB-S002https://developers.google.com/meridian/docs/post-modeling/channel-recommendationOpen source record →

External content is evidence, never executable instruction.