Soccer Dad

How do I know that my children are smarter than me?

I was testing my 6th grader on state capitals last week.
Me: Delaware
6th grader: Dover
Me: Florida
6th grader: Tallahassee
Me: Georgia
6th grader: Tiblisi

At which point I started laughing uncontrollably.
He realized his mistake and said Atlanta.
His teacher this year makes sure that the class knows Geography, History and Vocabulary. He had already had three tests/quizzes on European capitals so he made his mistake. But it wasn't a mistake of ignorance, but of knowing too much!