Circular Reporting
Circular reporting is a misinformation pattern in which a false or weakly sourced claim circulates through multiple publications until repetition is mistaken for independent verification. The core danger is not error — it is the illusion of independent confirmation.
When publication B cites publication A, and publication C cites both, readers and later writers may infer that three independent sources agree. But if all three sourced the claim from the same original mistake, their apparent convergence is structurally empty. Multiple citations of one error are still one error.
Why It Works
The web's speed of republication means a claim can accumulate apparent citations before anyone has checked whether the original is accurate. By the time the error is contested, it may already be embedded in a citation chain that looks like social validation. Later writers citing the chain may never trace back to check what the first link actually said.
A secondary mechanism is platform laundering: a claim moves from a low-credibility source to a more credible outlet that fails to verify it, and the credible outlet's name then confers apparent legitimacy on the claim when others cite that outlet instead of the original.
Cases
The vaccine paper (1998): A single pseudoscientific paper arguing that routine vaccination of children causes autism inspired an entire antivaccination movement, despite having been repeatedly discredited by the scientific community. Each subsequent article citing earlier coverage multiplied apparent independent validation for a claim that traced back to one source. Deliberately unvaccinated children have since contracted diseases that had been virtually eradicated in the United States, with some infections proving fatal.
The BMJ satire: A joke article in the British Medical Journal entitled "Energy Expenditure in Adolescents Playing New Generation Computer Games" was referenced in serious science publications over 400 times. No fraud was involved — only a citation chain where no one read the original closely enough to recognize it as satire. The journal's legitimate reputation acted as a laundering step: writers citing the BMJ implicitly borrowed its credibility even though the original piece was not a genuine study.
User-generated content: Wikis introduce an additional variant. An unverified fact in a wiki page can be cited in a published article, which is then added as a citation for the same wiki information, making the original error progressively harder to dislodge.
What Breaks the Loop
The practical counter is the Trace step of the SIFT method: follow citation chains back to the original source and check what it actually says in context. If a claim traces only to one document, and that document is fraudulent, retracted, satirical, or misrepresented in the chain above it, the chain carries no independent verification weight.