Doesn't his "99/100" give us a much better idea of his confidence in his own knowledge, compared to something more vague like "usually" or "the vast majority of the time"?
I ask because I've been studying how to make better decisions, and one of the techniques is to use numbers instead of the easily misinterpreted words. The famous example is the Bay of Pigs decision -- Kennedy was told the invasion plans had a "fair" chance at succeeding. The advisor was later interviewed and said that he meant 3-1 against as "fair odds", which could easily have changed Kennedy's decision.
I ask because I've been studying how to make better decisions, and one of the techniques is to use numbers instead of the easily misinterpreted words. The famous example is the Bay of Pigs decision -- Kennedy was told the invasion plans had a "fair" chance at succeeding. The advisor was later interviewed and said that he meant 3-1 against as "fair odds", which could easily have changed Kennedy's decision.