I also think the more experienced you get as an actor, you start to hear the conversations about why people get cast and not cast, sometimes it's so arbitrary. They decided the moment you walked in the door. And there's nothing you could have done to sway them, even if you'd the greatest performance of all time.
From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt that the most significant event of the 19th century will be judged as Maxwell's discovery of the laws of electrodynamics. The American Civil War will pale into provincial insignificance in comparison with this important scientific event of the same decade.