Last Updated
：2025/11/29
known unknown
（ plural ）
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An uncertainty of known magnitude, consequence, structure, and probability characteristics; something that we know that we don't know.
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known unknown
During the safety review, the team treated the equipment's remaining variability as a known unknown, documenting its magnitude, likely consequences, and probabilistic structure.
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During the safety review, the team treated the equipment's remaining variability as a known unknown, documenting its magnitude, likely consequences, and probabilistic structure.
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