Thomas Edison (1847 – 1931, an American inventor who developed many devices including the electric light bulb) tried two thousand different materials in search of a filament for the light bulb.
When none worked satisfactorily, his assistant complained, “All our work is in vain. We have learned nothing.”
Edison replied very confidently, “Oh, we have come a long way and we have learned a lot. We know that there are two thousand elements which we cannot use to make a good light bulb.” - Stephen (academictips.org)
Ecc 7:20 (GNB): “There is no one on earth who does what is right all the time and never makes a mistake.”
“A man must be big enough to admit his mistakes, smart enough to profit from them, and strong enough to correct them.” - John C. Maxwell.
“The greatest mistake we make is living in constant fear that we will make one.” - John C. Maxwell.
Pro 26:11 (GNB): “A fool doing some stupid thing a second time is like a dog going back to its vomit.”