I'm pretty sure that e.g. on such a big ship we saw in the video above there are plenty of "misfirings" on a lower level of abstraction: pipes need to be replaced, computers or electronics not working correctly, out of date life saving equipment that needs to be replaced etc.

In the end, I feel it's quite comparable to software running on layers of layers of abstraction being maintained by the respective experts in their fields (testing, CPU designers, driver implementers, OS maintainers, etc.).