Many, many great theoretical breakthroughs in physics and mathematics were done by very young people. Of course, you have to know something, so that’s experience, and experience grows with age, creativity is declining with age. You’ve got to find that balance between the two which will give you your peak years of accomplishment. If you have pure creativity, but you don’t know anything, it’s too bad. Sometimes it’s bad to know too much. I remember Wolfgang Pauli, a very famous Austrian physicist, complaining about his own lack of creativity, said, “Ach, I know too much!” You see, if you know too much, then you don’t have that fresh view which allows you to see the breakthrough idea.