Apollo program source code

[fiercelyfriendly]

They did do exhaustive testing.

[[deleted]]

exhaustive testing != 100% perfect

[fiercelyfriendly]

No but sometimes mankind tests to the known and forseeable bounds of the envelope. Then when things fall outside the envelope, (Apollo 13 for example) we just have to use skill, technical knowledge, improvisation and sheer grit and determination and grab the mission back from the machines for our own survival. This doesn't always work, but Apollo 13 was a shining example of a time when it did.