I think that if one understood and knew everything, that its possible that the being would want to go back to a state in which mystery was a part of reality. Perhaps too much fun, too much adventure, too much excitement, is taken out of life if a being were to come to a complete understanding and knowledge of reality. There would be nothing left to explore... Nothing to wonder about... Perhaps it is more unsatisfying to know and understand everything, than to have incomplete knowledge and understanding...