Definition of Expert


Found and liked this definition of expert in James Clear‘s newsletter.

The physicist Niels Bohr on what it takes to be an expert:

“An expert is a person who has found out by painful experience all the mistakes that one can make in a very narrow field.”

The oldest source I could find was “Dr. Edward Teller’s Magnificent Obsession” in LIFE magazine. September 6, 1954.

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