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Moving the Goalposts

Logical

Changing the criteria for proof or acceptance after the original criteria have been met. When evidence meets one demand, a new demand is introduced.

Example

Asking for evidence of the Moon landing, then dismissing photos as fabricated, then dismissing rock samples as terrestrial.

Theories on Conspirafy that exhibit this fallacy

  • The Moon Landing HoaxWhen photos are explained, demand for "independent" verification; when LRO shows sites, claim photos are faked too

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