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About this quote

What does it mean?
Wrong hypotheses are useful because they help eliminate errors; science self‑corrects through rigorous testing.
In plain terms
Incorrect ideas are part of the scientific process that leads to correct knowledge.
What can you take from it?
Embrace failure as a step toward truth.

Where it applies

  • laboratory research
  • peer review

Putting it to work

  • designing experiments
  • publishing null results

Questions to consider

  • How can we encourage reporting of negative results?
  • What safeguards ensure rigorous standards?

Another view

Not all fields have the same capacity for rapid correction.

More from Carl Sagan

  1. The well-meaning contention that all ideas have equal merit seems to me little different from the disastrous contention that no ideas have any merit.

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  2. There is a place with four suns in the sky - red, white, blue, and yellow; two of them are so close together that they touch, and star-stuff flows between them…

    Permalink to quote #93
  3. The universe seems neither benign nor hostile, merely indifferent.

    Permalink to quote #90

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