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[–]trident765 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (2 children)

Why would a farmer sell his cow for some worthless shells?

[–]fschmidt[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

The worth of money is established by social convention. Green pieces of paper have no more intrinsic value than shells.