So the fierce debates are generated by what evidence is available, and passed through a filter of common sense. Were things really as one-sided as they are presented, or were there mitigating factors. Did the losers actually have the right idea, but didn’t have a big enough army to overcome those who didn’t want that idea promulgated?

Just for example, look at King Henry the Eighth – was he the monster that history makes him? What’s the other side of the story there? look at the shooting of Archduke Ferdinand, that kicked off the first world war. What was that REALLY about? The death of an obscure middle european duke wasn’t really sufficient to plunge half the world into warfare – so what was the real story behind it?