Haha, that's an understatement, I'm sure he was light years ahead of me as early as 10. It's just inspiring to know that one can struggle with some of the basics and rebound to do great things.

I always felt I was slower than the other kids, but later I realised I was attempting to structure and understand the information whereas they were just regurgitating it. Once I did understand the information I could apply it far better than the others in class, and extend my understanding into new areas. That's just one reason someone may be "slower".

Please be charitable.

I thought I was. There's only a few dozen people on the planet who should be insulted by being told that they're not as good at mathematics as Roger Freaking Penrose.