Any time you come up short finding a workable solution to a problem or producing a workable idea. All you have done is find one way out of maybe thousands that do not work.
Here''s a good question; Should human kind be imperfect, "Why do human kind constantly works at the imperfect." Looking up the word perfection and excellence, this is where I want to be, because this reality is unable to produce any examples of each. This I think would be the next level or levels in the development of the human race.