I've worked with that QA team. They really were that good, but unfortunately they really were that necessary. The real difficulty is that you've no way of kno

I've worked with that QA team. They really were that good, but unfortunately they really were that necessary. The real difficulty is that you've no way of knowing whether the WTF you're looking at is inappropriately placed (and completely undocumented) business logic, an actual bug or a seriously hacky workaround for a bug in a completely different area of the code. If a bug, it may well be itself worked around by a seriously hacky fix somewhere completely different, which will break horribly if you fix the issue here. If it's a fix or especially if it's business logic then then it's even odds that it's not required any more.