[emodendroket]

So when it goes wrong in many predictable ways it’s a nightmare. All the stuff software engineers put around software to make it reliable, fault tolerant, and generally having the expected behavior is not just for laughs but the result of hard-won experience.

[MichaelZuo]

Why would it be a 'nightmare' if they recorded everything down and understand their software, what it does, what it doesn't do, how it operates, etc.?

[emodendroket]

Database corruption, unexpected bugs, inability to account for new desired behaviors… have you worked on software before?

[MichaelZuo]

It seems like your describing more of a problem with the system between the screen and the chair.

e.g. 'inability to account for new desired behaviors' for presumably a core business system, that the business relies on, would almost certainly imply that.

As to your question, it doesn't really matter what my background is, I could be a ballet dancer and would still be able to reason out how businesses operate and how software historically has integrated. It's not some big secret.