"Gary Marcus has been coding since he was 8 years old, and was very proud when his undergrad professor said he coded an order of magnitude faster than his peers

"Gary Marcus has been coding since he was 8 years old, and was very proud when his undergrad professor said he coded an order of magnitude faster than his peers. Just as Chollet might have predicted, most of the advantage came from clarity — about task, algorithms and data structures." I'm trying to understand what sort of person would end with a 3rd person anecdote like this.