Learn from your mistakes

Thomas Edison attempted 2,000 unique materials looking for fiber for the light. At the point when none worked sufficiently, his right hand griped.

"All our work is futile. We have adapted nothing." 

Edison answered unquestionably.......

"Goodness, we have made considerable progress and we have taken in a ton. We presently realize that there are 2,000 components that we can't use to make a decent light."