Even in simpler cases it can be problematic. For example, refactoring a tiny bit of repetitive code into a separate function might seem like a good idea. But, o

Even in simpler cases it can be problematic. For example, refactoring a tiny bit of repetitive code into a separate function might seem like a good idea. But, over time, things diverge and now additional parameters and branches have to be introduced to support. A small amount of repeated code is optimal.