As an IT professional, have you ever been in a situation where you know something is broken, but you can’t manage to spot where it is coming from?
It is frustrating and quite time-consuming. You can try to use “divide and conquer” to determine the root cause. Step by step, you reduce the problem space until you isolate the origin of the issue. Yet, in most cases, you still don’t fully know what complex chain of events led to the pain.