Kids are so fiercely opinionated, that if they love the Harry Potter books and they go see the movie, they'll be the first to say, 'That was wrong! They didn't get that right!' They're storytellers themselves. They're critics. They're going to have the critical opinion.
“Evil borders upon good, and vices are confounded with virtues; as the report of good qualities is delightful to a well-disposed mind, so the relation of the contrary should not be offensive.”