TASK DEFINITION: This task is about translating a given French language sentence to English.
PROBLEM: Personnellement, je ne peux plus me permettre le luxe de l'arrogance, sans parler de celui de la certitude.

SOLUTION: Personally, I can't afford the luxury of arrogance anymore, let alone the luxury of certainty.

PROBLEM: Il a ete manager bien avant que tu sois ne.

SOLUTION: He has been a manager way longer before you were even born.

PROBLEM: Ensuite ils disent que ca contredit l'affirmation donnee que AB est plus grand que BC.

SOLUTION:
Then they say this contradicts the given statement that AB is greater than BC.