Note de episod
The Space Shuttle Challenger disaster wasn't a surprise. Engineers had seen the same O-ring damage on earlier, successful flights — reviewed, discussed, waved through.
Nobody hid it. Something quieter had happened first: sociologist Diane Vaughan called it normalisation of deviance — the process by which a rule bent once, safely, quietly resets what "normal" looks like, until the next bend doesn't register as a bend at all.
Michael Comyn traces the same mechanism into a hospital corridor — how a routine scan becomes "stat" by drift rather than decision, how a diagnosis narrows without…
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