 and it's not everybody that gets to go in the bunkers most people slug it out on the surface and if you go out to 250 years you find the only inhabitants are the people in the underground bunkers and the best of the world is barren basically and if you go out as far as 300 years you start seeing that the earth is being terraformed again by humans slowly coming out of the bunkers and if you go out 400 years you see sort of a garden of eden the humans are much wiser much smarter much more careful about their environment and very carefully