Tag Archives: probability

William Murray – Mathematical and absolute certainty

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William MurrayAs mathematical and absolute certainty is seldom to be attained in human affairs, reasoning and public utility require that judges and all mankind in forming their opinion of the truth of facts should be regulated by the superior number of probabilities on the one side or the other

William Murray   (1705-1793)
The Art of Cross-Examination

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Richard Feynman – Is it impossible that there are flying saucers?

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Richard FeynmanSo my antagonist said, “Is it impossible that there are flying saucers? Can you prove that it’s impossible?” “No”, I said, “I can’t prove it’s impossible. It’s just very unlikely”. At that he said, “You are very unscientific. If you can’t prove it impossible then how can you say that it’s unlikely?” But that is the way that is scientific. It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible.

Richard Feynman   (1918-1988)

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