“Wait, Hummin,” said Seldon urgently. “What if, despite all your help and all my endeavors, it turns out that psychohistory cannot be made into a practical device after all? What if I fail?” Daneel rose. “In that case, I have a second plan in hand. One I have been working on a long time on a separate world in a separate way. It too is very difficult and in some ways even more radical than psychohistory. It may fail too, but there is a greater chance of success if two roads are open than if either one alone was.
