Thomas Edison, from code complete 2nd edition

When you come up with a first design attempt that seems good enough, don't stop! The second attempt is nearly always better than the first, and you learn things on each attempt that can improve your overall design. After trying a thousand different materials for a light bulb filament with no success, Thomas Edison was reportedly asked if he felt his time had been wasted since he had discovered nothing. "Nonsense," Edison is supposed to have replied. "I have discovered a thousand things that don't work." In many cases, solving the problem with one approach will produce insights that will enable you to solve the problem using another approach that's even better.

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