I had to think about this one for a little bit, before I responded.
Because, you know, my first reaction was, "My kids aren't average!"
And then I thought, "Wait, do I actually know any average kids?" And I realized that I don't. They're all good at one thing, and bad at another, and they're all unique and overflowing with exciting potential. Because, of course, they're kids! We don't know yet what they'll do with their lives.
Which got me to wondering, "What about adults? Do I know any average adults?" After all, we could say an adult has arrived at where ever they're going to go - so we should be able to say whether they're "average" or not.
My best friend is a self-described, "Parasite on the body politic." Her lifelong battle with mental illness probably means we can't call her average.
My husband just won a lifetime achievement award for his contribution to the community. He's not average!
My father in law was an auto-body repairman his whole life. I suppose if you looked at his hands, all stained with chemicals, and tried to speak to him (he wasn't a man of very many words), you might think he was "average". But that just means you didn't know him very well. He didn't have any formal learning, but he had a mind like a steel trap. I remember once opening up the newspaper and finding a quiz on "How much do you know about Northern Ontario?" I read a question out loud and he said, "A." The next question, "C." He got every last one right, because he'd lived it all and remembered everything - dates, names, right down to the tiniest details.
My mother in law didn't finish high school... until she was in her forties. Which was a fantastic achievement, considering the obstacles she had to overcome in her youth. Nope, she's not average, either.
So, I guess I'd just like to register a formal objection to the idea of "average". No one's average. We're all fascinating, interesting people, with our own unique strengths and weaknesses.