Asimov wrote the three books "Foundation", "Foundation and Empire" and the "Second Foundation" in 19501952. They dealt with a remarkable two-part idea. The Foundation was a research project, run by advanced social forecasting and social planning. It is based on the ideas of the character called Hari Seldon. Seldon developed "psychohistory". This method predicts the future, but only on a large scale. Seldon foresees the fall of the Galactic Empire, which includes the entire Milky Way, and a dark age lasting 30,000 years before a second great empire arises. 