trustme.bro/r/…
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the claim
Two beams of light moving in opposite directions obey special relativity
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

That light beams moving in opposite directions obey special relativity is a fundamental, axiomatic part of standard physics, so basic that it requires no citation.

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The analysis

The claim is a foundational physical truism derived from the postulates of special relativity and everyday physics instruction. Per the instructions, trivially true statements of physical law or observation are classified as common knowledge, requiring no supporting papers.

The paper trail · every fact has a biography
first checked05 Aug 2026
judged → COMMON KNOWLEDGE · 9505 Aug 2026
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