It was something to do with the cycles of history, the way great civilizations rise and fall. Few people noticed the changes at first, and by the time everyone ... » 

It was something to do with the cycles of history, the way great civilizations rise and fall. Few people noticed the changes at first, and by the time everyone realized, it was too late. Earth had left behind the age of science and reason and moved into a time of myth, legend, wizardry and heroes. «