The issue I have is that duplication is a coupling problem, but there’s no evidence in the coupled parts of the code that the coupling exists. It can be ok on a

The issue I have is that duplication is a coupling problem, but there’s no evidence in the coupled parts of the code that the coupling exists. It can be ok on a single-developer project or if confined to a single file, but my experience is that it’s a major contributor to unreliability, especially when all the original authors of the code have left.