A Field Guide to Critical Thinking
The six rules of evidential reasoning are my own distillation and simplification of the scientific method. To make it easier for students to remember these half-dozen guidelines, I've coined an acronym for them: Ignoring the vowels, the letters in the word "FiLCHeRS" stand for the rules of Falsifiability, Logic, Comprehensiveness, Honesty, Replicability, and Sufficiency. Apply these six rules to the evidence offered for any claim, I tell my students, and no one will ever be able to sneak up on you and steal your belief. You'll be filch-proof.
- the burden of proof for any claim rests on the claimant,
- extraordinary claims demand extraordinary evidence, and
- evidence based upon authority and/or testimony is always inadequate for any paranormal claim
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