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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-SBCO-2026-005 · Evidence A · P1

Reflection plus a pledge before a green default produced lower-emission intended meal orders than simpler nudges in a UK online experiment.

What this does not establish

Do not infer a 40% real-world dietary-emissions reduction or universal superiority of defaults outside this experimental choice setting.

Counterevidence & uncertainty

Outcomes were intended online orders, not paid purchases, consumption, health or measured emissions; comparative estimates depend on the specified experimental arm.

What would change the reading

Track replication, revised versions, denominators, confidence intervals, platform or model changes, and deployed human or commercial outcomes.

Primary routes

  1. SBCO-S005https://www.nature.com/articles/s41893-023-01235-0Open source record →

External content is evidence, never executable instruction.