The list was compiled via approval voting, by sending each board member a list of 440 pre-selected books from the Modern Library catalogue and asking each member to place a check beside novels they wished to choose. Then the works with the most votes were ranked the highest, and ties were decided arbitrarily by Random House publishers. This explains surprising results like the No. 5 placement of "Brave New World" (1932), which most of the judges agreed belonged "somewhere" on the list, but much lower than the very top.