The basic premise was it’s no longer obvious if a system is still doing anything useful. If the system had easy to locate documentation saying everything that

The basic premise was it’s no longer obvious if a system is still doing anything useful. If the system had easy to locate documentation saying everything that used it then there wouldn’t be an issue, but that’s very difficult to maintain. Documentation on every possible system that could use the resource would need to be accurate, complete, have someone locate and actually read it, remember, and communicate it with someone in a relevant meeting which may be taking place multiple levels of management above the reader here. As part of that chain when a new manager shows up and there’s endless seemingly minor details, so even if they actually did encounter that information at some point theirs nothing that particularly calls out as worth remembering at the time. That’s a lot of individual points of failure which is why I’m saying in the real world even well run companies mess this stuff up.