True creativity is only reasonable in retrospect

We have difficulty thinking of an idea even when we have all the facts in front of us. Thomas H. Huxley exclaimed after reading On the Origin of Species, "How stupid of me not to have thought of this."

Connecting unrelated ideas needs courage, as most people will cross-connect the related ideas. The ideas that seem very unreasonable at first requires daring, and only afterwards does it seem reasonable.