[AnimalMuppet]

Early in my career, a co-worker and I developed the habit, when a bug was fixed, of asking each other "Did you fix it everywhere?"

But that's the problem right there. Why is there more than one place to fix it?

(Now, sure, if you're using a function call wrong, you need to fix it everywhere you call that function, and it's fine that there are multiple such places. That's what functions are for. But if it's something like how a value is calculated... why is there more than one place that calculates the value?)