> Thus, it is not unreasonable to guess there may be at least one surprise in the next 250,000 seconds, a probability of 1/500 per engine per mission. It's int

> Thus, it is not unreasonable to guess there may be at least one surprise in the next 250,000 seconds, a probability of 1/500 per engine per mission. It's interesting to read this in the context of the STS-93 incident [1] where a broken SSME injector came close to causing a mission abort. Was this Feynman's "one more surprise"? He was writing this report 70 missions before it happened in 1999. [1] https://en.wikipedia.org/wiki/STS-93 https://en.wikipedia.org/wiki/STS-93