When one is young, one does not mind feeling stupid. Understanding something in Mathematics takes a lot of time and effort. After a certain age, one does not want to feel that stupid anymore. That's why many great mathematicians did their best work before they were 30. It's more psychological than intellectual, I'd say.
That's right on the spot, and a much better way of saying it than I did when I talked about ego.
That's right on the spot, and a much better way of saying it than I did when I talked about ego.