Credit Theorists insisted that money is not a commodity but an accounting tool. In other words, it is not a "thing" at all. For a Credit Theorist can no more touch a dollar or a deutschmark than you can touch an hour or a cubic centimeter. Units of currency are merely abstract units of measurement, and as the credit theorists correctly noted, historically, such abstract systems of accounting emerged long before the use of any particular token of exchange.
( David Graeber )
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