Economy

Sigh.

It's the old "knowing which button to push".

I've spent days having discussions about a change that I understood incredibly well, and "just knew" wouldn't cause issues... And fortunately we discovered through all these discussion, an edge case where the change would've caused a major outage.

The reason business has extensive meetings and discussions is to uncover this stuff.

The actual change is nothing more than clicking a button. But clicking the right one, at the right time.