Trust Me Bro: the receipt

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the claim

The constancy of the speed of light for all observers is a foundational postulate of relativity

the verdict

COMMON KNOWLEDGE

no citation needed for this one

refutedsupported

the weight of evidence

no sources on either side

The constancy of the speed of light in all inertial frames is a foundational postulate of Einstein's special theory of relativity, making this statement a matter of established scientific definition and common knowledge.

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The analysis

The claim states a foundational definition and postulate of special relativity (Einstein's second postulate). By the prompt instructions, a claim that is trivially true by definition or established physical consensus does not require citations and should be categorized as COMMON_KNOWLEDGE.

The paper trail · every fact has a biography

first checked04 Aug 2026

judged → COMMON KNOWLEDGE · 9504 Aug 2026

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