Imagine what it would be like for our descendants to experience the fall of civilization. Imagine failures of reasonableness so total that our largest bombs finally fall upon our largest cities in defense of our religious differences. What would it be like for the unlucky survivors of such a holocaust to look back upon the hurtling career of human stupidity that led them over the precipice? A view from the end of the world would surely find that the six billion of us currently alive did much to pave the way to the Apocalypse.