" I merely wish to point out that some of the major break-throughs in the history of science represent such dramatic tours de force, that 'ripeness' seems a very lame explanation, and 'chance' no explanation at all. Einstein discovered the principle of relativity 'unaided by any observation that had not been available for at least fifty years before'; the plum was overripe, yet for half a century nobody came to pluck it. "

― Arthur Koestler , The Act of Creation