As I work through the items on a revision checklist, I discover new things to fix, new items to add to the bottom of the list. It's the old game that manuscripts love to play when the finish line of a draft is in sight.
Maybe the manuscript knows that if it showed all its
flaws at once, the writer would run screaming in horror. So it reveals
them slowly, tantalizing the writer with the idea that someday this
draft will be complete.