seeing points from both sides, I think I need to clear the misunderstanding.
I believe what Peano merely means is that there is no 1-way of doing such things. By eyes, he means being able to see what's wrong. It is something that is not quantifiable, but a skill that has to be developed over time.
soeypixels' method isn't the only way. It works and doesn't work depending on what you're dealing with.
This question is as complex as asking which camera lens should I buy. Or what camera settings should I use. It's not a question that can be answered in a single sentence. Even whatever solution that Peano offers, there will definitely be situations where it is not applicable.