As I say, the clues have always been there, from my very first year. Yes, I was a fussbudget about rules and tried much too hard to show how much I knew in class. I was in a new situation, remember---and I was absolutely determined not to be caught breaking rules until I found out just how strict they were about breaking rules, nor to be thrown out of school for ignorance. Hogwarts was an incredible opportunity and I wanted to grab with both hands.