What I often find is that the copy-and-paste turns out to be copy-paste-and-modify-slightly -- which helps describe the perimeter for the future refactor and ab

What I often find is that the copy-and-paste turns out to be copy-paste-and-modify-slightly -- which helps describe the perimeter for the future refactor and abstraction. In this light it's helpful to duplicate a few times, to better identify what repeats and what is unique.