After idea generation, the next step in the thinking process is incubation. After you have spent time collecting the facts and generating ideas, forget the problem. Hand it over to the subconscious to incubate. The subconscious is a vast computer, which stores everything you have ever seen, felt, smelt or experienced. Read a book, watch a movie, listen to music or ride a bicycle. Incubation after hard work can result in discovery.