The o-ring failure had nothing to due with quality of the part. It had to do with politics, the engineers said that the part had never been tested under the con

The o-ring failure had nothing to due with quality of the part. It had to do with politics, the engineers said that the part had never been tested under the conditions and recommended scrubbing the launch. I think Edward Tufte has gone into detailed analysis about how the engineers presented their case poorly.