Test a claim across independent sources by comparing provenance, definitions, evidence, incentives, timing, and unresolved contradictions.
Write the claim in testable form
Separate the actor, action, quantity, place, and time. A broad statement cannot be triangulated until you know exactly what would count as confirmation or contradiction.
Find sources with genuinely different provenance
Three articles repeating one press release are one evidence chain, not three confirmations. Trace each source to its data, document, observation, or interview, and diagram shared dependencies.
Align definitions and timeframes
Check whether sources use the same unit, population, geography, period, and threshold. Apparent disagreement often comes from mismatched definitions; apparent agreement can hide different measurement methods.
Compare incentives and access
Ask what each source can directly know, what it wants the audience to believe, and what constraints shaped publication. Incentives do not automatically invalidate a source, but they guide the checks you need.
Publish the residual uncertainty
Record what converges, what conflicts, and what remains unavailable. Responsible triangulation can end with a bounded conclusion or an explicit “not yet verified.”
Frequently asked questions
How many sources are enough?
There is no fixed number; prioritize independent provenance and fit to the claim.
Is repetition confirmation?
Not when multiple outlets depend on the same original source.
What if reliable sources disagree?
Compare definitions, dates, methods, access, and evidence; preserve the disagreement if it remains unresolved.
Can social media be a source?
It may be evidence of what an account posted, but identity, context, date, and underlying claims still require verification.
Should I average conflicting numbers?
Not unless they measure the same thing with compatible methods.
What is the final output?
A claim ledger showing support, contradiction, dependency, uncertainty, and next checks.
Build an evidence matrix before writing
Create rows for the claims you need to establish and columns for each source. In every cell, note support, contradiction, silence, and the source’s proximity to the event or data. Independence matters: five articles repeating one press release are one evidence chain, not five confirmations. Give primary records, transparent methods, and direct observation appropriate weight, while also checking who produced them and for what purpose. Where accounts conflict, preserve the disagreement and look for a source capable of resolving the specific point. Triangulation should narrow uncertainty or describe it accurately; it should not manufacture consensus by counting repeated versions of the same claim.
CTA: Start reading with Readever and build a source-linked understanding you can audit later.
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