2014-04-26 10:52:28 -04:00
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Ninety-Ninety Rule
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2014-04-26 11:54:15 -04:00
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n. The first 90% of the code accounts for the first 90% of the development
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time. The remaining 10% of the code accounts for the other 90% of the
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development time. Attributed to Tom Cargill of Bell Labs, and popularized by
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Jon Bentley's September 1985 Bumper-Sticker Computer Science column in
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Communications of the ACM. It was there called the Rule of Credibility , a
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name which seems not to have stuck. Other maxims in the same vein include
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the law attributed to the early British computer scientist Douglas Hartree:
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The time from now until the completion of the project tends to become
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constant.
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