What is Money?

Bitcoins and the Fiction of Money by Q. Hardy

http://bits.blogs.nytimes.com/2014/01/27/bitcoin-and-the-fictions-of-money/

Quentin Hardy observes:

“How should we think about a currency like Bitcoin? The first thing to remember is this: Money is a sort of collective fiction. What money we choose to trust says much about how we see the world.”

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An Odd Economist and His Unconventional Views on Money and Monetary Policy 

http://www.pbs.org/newshour/making-sense/is-your-money-safe-at-the-bank-an-economist-says-no-and-withdraws-his/