Duff McDonald is a Canadian American business journalist and writer based in New York.

[1] He attended University of Pennsylvania from 1988 to 1992 and majored in Finance.

[citation needed] His first job after university was at Goldman Sachs.

[2] Later, he authored “The Firm: The Story of McKinsey and Its Secret Influence on American Business” which took a critical eye to the role and reputation of McKinsey & Co.[3] In 2017, he published The Golden Passport which heavily criticized the Harvard Business School.

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