Richard Feynman

Richard Feynman’s famous conclusion to his report on the shuttle Challenger accident:
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

2 thoughts on “Richard Feynman

  1. shinichi Post author

    Richard Feynman’s famous conclusion to his report on the shuttle Challenger accident, which arose again in the Columbia accident, is “For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

    ~ Edward Tufte

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  2. shinichi Post author

    Richard Feynman

    https://en.wikipedia.org/wiki/Richard_Feynman

    Challenger disaster

    Feynman played an important role on the Presidential Rogers Commission, which investigated the Challenger disaster. During a televised hearing, Feynman demonstrated that the material used in the shuttle’s O-rings became less resilient in cold weather by compressing a sample of the material in a clamp and immersing it in ice-cold water. The commission ultimately determined that the disaster was caused by the primary O-ring not properly sealing in unusually cold weather at Cape Canaveral.

    Feynman devoted the latter half of his book What Do You Care What Other People Think? to his experience on the Rogers Commission, straying from his usual convention of brief, light-hearted anecdotes to deliver an extended and sober narrative. Feynman’s account reveals a disconnect between NASA’s engineers and executives that was far more striking than he expected. His interviews of NASA’s high-ranking managers revealed startling misunderstandings of elementary concepts. For instance, NASA managers claimed that there was a 1 in 100,000 chance of a catastrophic failure aboard the shuttle, but Feynman discovered that NASA’s own engineers estimated the chance of a catastrophe at closer to 1 in 200. He concluded that the space shuttle reliability estimate by NASA management was fantastically unrealistic, and he was particularly angered that NASA used these figures to recruit Christa McAuliffe into the Teacher-in-Space program. He warned in his appendix to the commission’s report (which was included only after he threatened not to sign the report), “For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.

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