re: specific examples of diversity contributing to corporate earnings

quote:

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I used to work for a manufacturer in NOLA. We made jewelry and sculpture. Most of our jewelry workers were Vietnamese, while most of our sculptors were white hipsters. The jobs were broadly similar, working at a bench, making one piece at a time, etc. The Vietnamese brought experience & expertise with jewelry, and the hipsters brought the same for the art market. If we'd had to choose one or the other, we'd have survived, but our productivity was much higher with two ethnic groups as opposed to one.

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You just made the OP's point without realizing it. Those are 2 different trades/jobs. If you had told the Koreans they had to hire some of the hipsters to help, what would happen? And likewise if you made the hipsters hire the Koreans???