This is the idea, first espoused by K. Anders Ericsson, a pyschologist at Florida State University, that it takes about 10,000 hours of practice before any individual can become an expert.
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2. 乔尔·艾森，美国佛吉尼亚州里士满大学里士满法学院法学教授。
Joel B. Eisen is a professor of law at the University of Richmond School of law in Richmond, Virginia (US).
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3. 乔尔·艾森，美国佛吉尼亚州里士满大学里士满法学院法学教授。
Joel B. Eisen is a professor of law at the University of Richmond School of law in Richmond, Virginia (US).
