Willard Quine's early work was in the field of mathematical logic and set theory, the subject of half a dozen of his 23 books.

ECONOMIST: Willard Quine

While I do not agree, I can at least see some element of logic in their position just as I understand that well meaning and reasonable scientists disagree on the subject.

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If you accept the logic of the optimal currency area approach, the world requires a proliferation of currencies, so that every area subject to shocks has its own.

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