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Nancy Leveson Inspirational Quotes (6)

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Safety is an emergent property of systems, not a component property.
Nancy Leveson
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What [software] must not do is not the inverse of what it must do. .
Nancy Leveson
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Reliability engineers often assume that reliability and safety are synonymous, but this assumption is true only in special cases.
Nancy Leveson
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Highly reliable components are not necessarily safe. .
Nancy Leveson
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Software−related accidents are usually caused by flawed requirements.
Nancy Leveson
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Requirement completeness: Requirements are sufficient to distinguish the desired behavior of the software from that of any other undesired program that might be designed. .
Nancy Leveson