User blog comment:Zolnir/Ozpin: The Age Immortal Headmaster/@comment-9464517-20140825235813/@comment-11188061-20140826002909

That's why I say that people are not understanding it.

Mistakes doesn't necessarily need to involve big stuff. Everyone makes their own kind of mistakes, for example a chef may forget to add the right amount of salt into the soup (1 mistake), may have forgotten to inform the waiter that the dishes are ready (1 mistake), may have even accidentally used a dirty dish to serve food (1 mistake). And a dedicated chef may have to cook for the entire day with only 1 or 2 rest periods, and since he's working non-stop his chances and frequency of committing silly mistakes are much higher. Let's say that this chef has been working for forty years and he's now sixty years old, not even counting the mistakes he might do in casual life and younger days.

Can you honestly said he has made 'less' mistakes than Ozpin?

You see, the thing that matters here, again I repeat, is frequency and the possibility of Ozpin's claim. If he claims that he has made a bigger mistake than anyone else in the planet then it'll be much easier to prove - if he is the direct prepertuator of say, the bloodiest war in history second only to the Grimm War, then he has already proven his point (until some random useless OC comes out and say he's destroyed the universe or something).

But the thing he dares claim here is something no one should never be able to prove - the frequency of one's mistake. Of course it's possible for an older person to make less mistakes than a clumsy young man, but that's like saying a 30% chance might win out against the opposing 70%. Of course it's true, but the fact remains that given enough replays, the 70% chance will always beat out 30%, and we're not comparing 1 old man to 1 middle-aged man here, we're comparing Ozpin to everyone else in the planet.

The old man that constantly appeared in RWBY had worked in a Dust shop, a bookstore and a hawker store. He did 3 jobs in a single day (since he's omnipresent!), and we know isn't going to end there. Joke or not, can Ozpin truly claim that he has made less mistakes that this old man, who has lived longer and worked harder than him and thus more susceptible to foolish mistakes?

The only possible way he can be sure of this, is if he had lived longer than anyone else, or he had the ability to rewind time. If he had lived for 300 years then of course he's going to make more mistakes than anyone else, even if somehow there's a freak born for the sake of making enough mistakes to beat Ozpin. His seniority being higher than everyone else is the only way the claim can be true.