"It is what we know already that often prevents us from learning."
"As soon as the circumstances of an experiment are well known, we stop gathering statistics. ... The effect will occur always without exception, because the cause of the phenomena is accurately defined. Only when a phenomenon includes conditions as yet undefined,Only when a phenomenon includes conditions as yet undefined, can we compile statistics. ... we must learn therefore that we compile statistics only when we cannot possibly help it; for in my opinion, statistics can never yield scientific truth."
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Source: Claude Bernard (2012). “An Introduction to the Study of Experimental Medicine”, p.159, Courier Corporation
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