Zest and Rind are two different things. Some people are so close minded and so stubborn they would suffer just to say they are right. Like for example, someone who doesn't know the difference between zest and rind and cooks with it.Rind is very bitter and zest is very -- err, Zesty! They produce two very different things when you use them in a recipe.
If somebody tells the cook this, the cook has a choice. He can admit he is wrong or can be stubborn and ruin the dish. If that cook has to ruin a dish before he learns his lesson, that is OK. He just needed convincing. Lesson learned.
But, you really think he believes he was wrong? No! He will change every other ingredient in that recipe before he even considers the rind/zest; just because he refuses to believe the other person was right.
Moral: people don't like to admit they don't know something, it is harder to admit ignorance than to admit being wrong for many.
