Earlier quoted context omitted.
I have heard of Larry Niven and never heard of Millard Fillmore. Being outside the US I never covered past US presidents in school.
Probably fewer than 10% of Harvard graduates could tell you anything substantive about Millard Fillmore’s presidency. He isn’t covered here either.
I'm possibly only aware of Millard Fillmore because of the Infocom game "Bureaucracy" and oddly enough:
"Jerry Pournelle named Bureaucracy as his game of the month for October 1987, stating that he and Larry Niven became "engrossed""