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This article is from the Scientific Skepticism FAQ, by Paul Johnson Paul@treetop.demon.co.uk with numerous contributions by others.

1.5: "Extraordinary evidence is needed for an extraordinary claim" (scientific skepticism)

An extraordinary claim is one that contradicts a fact that is close
to the top of the certainty scale discussed above. So if you are
trying to contradict such a fact, you had better have facts available
that are even higher up the certainty scale.

 

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• prev: 1.4: If scientific theories keep changing, where is the Truth?
• Index
• next: 1.6: What is Occam's Razor?

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science, engineering, scientific skepticism, skeptics, Conspiracy Theory