Money is a machine for doing quickly and commodiously what would be done, though less quickly and commodiously, without it.
Bitcoin is probably the most fungible currency ever created.
Money is the general medium of exchange. It is the thing for which all other goods are traded, the means of final payment for such goods on the market.
Money is only a human invention.
Practically and commercially speaking, a dollar is not necessarily a specific thing, made of silver, or gold, or any other single metal, or substance. It is only such a quantum of market value as exists in a given piece of silver or gold.
Value manifests itself as exchange value, as a quantitatively determined relationship, in virtue of the fact that one commodity can be exchanged for another.
Information. What's wrong with dope and women? Is it any wonder the world's gone insane, with information come to be the only real medium of exchange?
Money is only important in a society when certain resources for survival must be rationed and the people accept money as an exchange medium for the scarce resources. Money is a social convention, an agreement if you will. It is neither a natural resource nor does it represent one. It is not necessary for survival unless we have been conditioned to accept it as such.
Money is money.
After all, money is but the agent of the transfer of values
Economic theory has nothing to say as to what commodity will acquire the status of money. Historically, it happened to be gold. But if the physical makeup of our world would have been different or is to become different from what it is now, some other commodity would have become or might become money. The market will decide.
Goods can serve many other purposes besides purchasing money, but money can serve no other purpose besides purchasing goods.
Money appears as measure (in Homer, e.g. oxen) earlier than as medium of exchange, because in barter each commodity is still its own medium of exchange. But it cannot be its own or its own standard of comparison.
