Managers at NASA claimed that there was a 1 in 100,000 chance of a catastrophic failure aboard Challenger Spacecraft, but Richard Feynman (theoretical physicist) discovered that NASA’s Engineers estimated the chance of a catastrophe to be closer to 1 in 200.

6 months before the Challenger disaster a lone engineer told his superiors about the O-Ring problem and warned the result “would be a catastrophe of the highest order: loss of human life.”