David Brooks of the New York Times writes about technology and risk, in the context of the drilling disaster in the Gulf:
**“Second, people have a tendency to get acclimated to risk. As the physicist Richard Feynman wrote in a report on the Challenger disaster, as years went by, NASA officials got used to living with small failures. If faulty O rings didn’t produce a catastrophe last time, they probably won’t this time, they figured.

Feynman compared this to playing Russian roulette. Success in the last round is not a good predictor of success this time. Nonetheless, as things seemed to be going well, people unconsciously adjust their definition of acceptable risk.” (from**Drilling for Certainty, NYT)

Good article, check it out.