Mike Mullane - Normalisation of deviance - IAFF - Part 1
Stuart Walker · ★ Dr. Daniels Hall of Fame
Why it's in the Hall of Fame: Normalization of deviance. The most dangerous risk is the one you have learned to live with.
Why leaders watch it
An astronaut explains how normalized deviance led to Challenger, with a framework leaders can use to spot gradual rule erosion.
Astronaut Mike Mullane explains normalisation of deviance, where teams gradually come to accept violations of their own safety standards. He uses the Challenger shuttle disaster as the main case, drawing on NASA's ignored warnings before the launch. It is the first part of a talk given to a fire-fighters' association.
Takeaways
- Small accepted deviations compound into catastrophe
- Schedule pressure normalizes risky shortcuts
- Leaders must keep enforcing standards and hearing dissent
Topics: Failure, safety & learning orgs, Culture & values
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