My first riddle on here! One night at around midnight, a wealthy business man was going to board a plane, when a night guard cam running up to him. "Please don't go on that plane! I just had a dream that it'll crash!" The man believed him, and he wasn't needed at his destination for another week. Later that night, the plane indeed crash. There were no survivors. The man thanked the night guard, but he was fired shortly afterwards. Why?