When I was 5 year old, I thought I was a maths genius. I had arithmetic absolutely nailed and I knew there were a few more things to learn, but arithmetic was e

When I was 5 year old, I thought I was a maths genius. I had arithmetic absolutely nailed and I knew there were a few more things to learn, but arithmetic was easy so presumably there was just a little more to learn before I could be a professor. I think that's what he means.