Hhhmmmm I thought about that too. Unlike Nancy Drew or The Famous Five say... those tales have dated as society has changed. What was considered adventurous in the 60's and 70's would not get 21st century kids past the front cover. But Harry's world is timeless, ageless and because of that always relevant. But yes, you are right time will tell whether this children's fiction will survive to our children's children and beyond.