THE SHORT ANSWER
State each claim precisely, align its definitions, population, period and context, inspect the evidence and methodology, identify missing information, and judge where the stronger evidence points. The existence of disagreement does not mean the evidence is evenly balanced.
Make the claims comparable
| Check | Question |
|---|---|
| Proposition | What exactly would be true if this claim is right? |
| Definition | Do key words mean the same thing? |
| Population | Are both claims about the same people or cases? |
| Period | Do they describe the same time? |
| Outcome | Are they measuring the same result? |
| Context | Which conditions differ? |
Compare the support, not the volume
- Write Claim A and Claim B as testable statements.
- Trace each to its closest evidence.
- Compare methods, relevance and uncertainty.
- Check whether apparently independent sources share one origin.
- Identify evidence neither claim explains.
- State which conclusion is better supported and how strongly.
Avoid false balance
Giving two claims equal space can create the appearance of equal support. If one rests on transparent, replicated evidence and the other on an unsupported assertion, describe that difference directly. Fair comparison means applying consistent standards, not manufacturing a tie.
If credible evidence remains genuinely mixed, explain where it conflicts and what future observation would help resolve it.
Evidence & context: National Academies of Sciences, Engineering, and Medicine
Conflicting growth claims may use different denominators
One report says a product grew rapidly; another says adoption remains small. Both can be true if the first reports relative growth from a small base and the second reports current market share. Aligning the denominator converts a supposed contradiction into a clearer picture.
When a claim arrives through an urgent or impersonated message, pause the comparison and follow the defensive phishing and social-engineering verification routine.
Sources & further reading
- Reproducibility and Replicability in Science
National Academies of Sciences, Engineering, and Medicine. A consensus report on evidence, uncertainty, transparency, reproducibility and replication. Scientific standards need proportionate adaptation outside research settings.
- Civic Online Reasoning
Digital Inquiry Group. Source-evaluation teaching resources, including lateral reading: investigating a source beyond its own website.
Examples and exercises are illustrative unless attributed to a source. No independent expert review is claimed.
A correction, a counterexample or an experience worth sharing?
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