Meanings
- Outlandish and unbelievable claims must be followed by exceptional evidence to be considered acceptable in rational discourse.
Synonyms: ECREE, Sagan standard
Synonyms & antonyms
proverbOutlandish and unbelievable claims must be followed by exceptional evidence to be considered acceptable in rational discourse.
Origin
Popularized by Carl Sagan.
Full word history & related roots →Cite this entry
extraordinary claims require extraordinary evidence. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/extraordinary%20claims%20require%20extraordinary%20evidence
“extraordinary claims require extraordinary evidence.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/extraordinary%20claims%20require%20extraordinary%20evidence. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “extraordinary claims require extraordinary evidence,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/extraordinary%20claims%20require%20extraordinary%20evidence.
Source: extraordinary claims require extraordinary evidence on Wiktionary, CC BY-SA 4.0.