Where do new ideas come from?

Ideas come from moments. From moments of great thinking, also known as imagination. Even if someone thinks for ten years about an idea the idea will form at a burst of imagination. But you also must be questioning. You have to question why something is happening. Why do we do it this way? Why don't we do it this way...BAM and you get a burst of imagination. You continue working on this idea and you develop it into a final invention. Ideas are a mix of great imagination, questioning and background knowledge.