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No isolated experiment, however significant in itself, can…

“No isolated experiment, however significant in itself, can suffice for the experimental demonstration of any natural phenomenon; for the "one chance in a million" will undoubtedly occur, with no less and no more than its appropriate frequency, however surprised we may be that it should occur to us.” quote by Ronald Fisher
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“No isolated experiment, however significant in itself, can suffice for the experimental demonstration of any natural phenomenon; for the "one chance in a million" will undoubtedly occur, with no less and no more than its appropriate frequency, however surprised we may be that it should occur to us.”

Ronald Fisher

About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

A single experiment, no matter how striking, cannot prove a natural law; many repetitions matching expected frequency are needed.

In simple terms: One experiment isn’t enough to prove a law.

Key Takeaway

Require repeated evidence.

Themes

science methodology evidence

Mood

analytical skeptical

Type

scientific educational

When to use this quote

  • laboratory research
  • clinical trials
  • field observations
  • quality control

Key Concepts

probability frequency replication

Questions to Reflect On

  • How many repetitions are needed for confidence?
  • What defines “appropriate frequency”?
A Different Perspective

Rare events may be misinterpreted as proof without proper statistical context.

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