Normal Accidents some key points from Charles Perrow, Normal - PowerPoint PPT Presentation

May 13, 2023 •448 likes •527 views

Normal Accidents some key points from Charles Perrow, Normal Accidents (New York: Basic Books, 1984). 1 Normal Accident / System Accident An accident that is inevitable, given a system with interactive complexity and tight coupling. (p. 5)

Normal Accidents some key points from Charles Perrow, Normal Accidents (New York: Basic Books, 1984). 1
Normal Accident / System Accident ● An accident that is inevitable, given a system with interactive complexity and tight coupling. (p. 5) 2
Interactive Complexity Linear interactions ● Simple, desirable ● Expected, familiar sequences ● Common (overwhelmingly predominate in most systems) ● 3
Interactive Complexity Complex interactions ● Branching paths ● Feedback loops ● Jumps from one linear sequence to another ● Unfamiliar, unplanned sequences ● Common mode connections ● Invisible, not immediately comprehensible ● 4
Complex vs. Linear Systems 5
Coupling Tendencies 6
Perrow's Interaction/Coupling Chart 7

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