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“Extraordinary claims require extraordinary evidence”

Popularized by astronomer Carl Sagan, the actual source of the quote I used to title this post may be from Marcello Truzzi, a co-founder of the debunking group called CISCOP. The concept, however, goes back to people such as the French astronomer Pierre-Simon, marquis de Laplace —usually just called “Laplace”— (“”The weight of evidence for […]