We can deduce that the author cites Thomas Friedman primarily to: Reveal his insights into the circumstances that inspired Friedman to invent the flat-world metaphor.
Thomas Friedman actually refers to an author and political commentator. He is an American and a three-time Pulitzer Prize winner. He is known for his writings on global trade, globalization, foreign affairs, etc.
We see here that the author cites Thomas Friedman primarily to reveal his insights into the circumstances that inspired Friedman to invent the flat-world metaphor.
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