Learn from mistakes
Thomas
Edison 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.”
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