Economics

Economics is the social science that studies the production, distribution, and consumption of goods and services. The word ‘economics’ is from the Greek for οἶκος (oikos: house) and νόμος (nomos: custom or law), hence “rules of the house(hold).”

A definition that captures much of modern economics is that of Lionel Robbins in a 1932 essay: “the science which studies human behaviour as a relationship between ends and scarce means which have alternative uses.” Scarcity means that available resources are insufficient to satisfy all wants and needs. Absent scarcity and alternative uses of available resources, there is no economic problem. The subject thus defined involves the study of choice, as affected by incentives and resources.

Areas of economics may be divided or classified in various ways, including:

* microeconomics and macroeconomics
* positive economics (“what is”) and normative economics (“what ought to be”)
* mainstream economics and heterodox economics
* fields and broader categories within economics.

Coin of account

A coin of account is a unit of money that does not exist as an actual coin (that is, a metal disk) but is used in figuring prices or other amounts of money. For example, the mill (or sometimes, mil) is a coin of account in the United States. It is equal to one-tenth of a penny, and so to one-thousandth of a dollar (= $0.001), whence the name, which means “thousandth.” There was never such a coin minted by the U.S. Federal government, though some states minted these coins well into the mid-1900s. Coins of account are used in accounting and for figuring taxes, usually either property taxes or sales taxes.

Credit money

Credit money is any claim against a physical or legal person that can be used for the purchase of goods and services. Examples of credit money include bank deposits and credit card loans.

During the Crusades in Europe, precious goods would be entrusted to the Roman Catholic Church’s Knights Templar, who effectively created a system of modern credit accounts. Over time this system grew into the credit money that we know today, where banks create money by approving loans – although the risk and reserve policies of each national central bank set a limit on this.

Sometimes, as in the United States during the Great Depression, trust in bank policies drops very low, and there is the risk of a bank run without government or other intervention. In the United States, the Federal Deposit Insurance Corporation was created in 1933 to prevent bank insolvency from affecting depositors.

Foreign exchange market

The foreign exchange (currency or forex or FX) market exists wherever one currency is traded for another. It is by far the largest financial market in the world, and includes trading between large banks, central banks, currency speculators, multinational corporations, governments, and other financial markets and institutions. The average daily trade in the global forex markets currently exceeds US$1.9 trillion. Retail traders (individuals) are a small fraction of this market and may only participate indirectly through brokers or banks.

Electronic money

Electronic money (also known as electronic cash, electronic currency, digital money, digital cash, digital currency or scrip) refers to money which is exchanged only electronically. Typically, this involves use of computer networks, the internet and digital stored value systems. Electronic Funds Transfer (EFT) and direct deposit are examples of electronic money. Also, it is a collective term for financial cryptography and technologies enabling it.

While electronic money has been an interesting problem for cryptography (see for example the work of David Chaum and Markus Jakobsson), to date, use of digital cash has been relatively low-scale. One rare success has been Hong Kong’s Octopus card system, which started as a transit payment system and has grown into a widely used electronic cash system. Another success is Canada’s Interac network, which in 2000 at retail (in Canada) surpassed cash as a payment method. Singapore also has an electronic money implementation for its public transportation system (commuter trains, bus, etc), which is very similar to Hong Kong’s Octopus card and based on the same type of card (FeliCa).

United States dollar & the Euro

Since the mid-20th century, the de facto world currency has been the United States dollar. According to Robert Gilpin in Global Political Economy: Understanding the International Economic Order (2001): “Somewhere between 40 and 60 percent of international financial transactions are denominated in dollars. For decades the dollar has also been the world’s principle reserve currency; in 1996, the dollar accounted for approximately two-thirds of the world’s foreign exchange reserves” (255).

Many of the world’s currencies are pegged against the dollar. Some countries, such as Ecuador, El Salvador, and Panama, have gone even further and eliminated their own currency in favor of the United States dollar.

Since 1999, the dollar’s dominance has begun to be undermined by the euro, that represents an equivalent size economy, with the prospect of more countries adopting the euro as their national currency. Quite a few of the world’s currencies are pegged against the euro. They are usually Eastern European currencies like the Estonian kroon and the Bulgarian lev, plus several north African currencies like the Cape Verdean escudo and the CFA franc.

As of December 2006, the euro surpassed the dollar in the combined value of cash in circulation. The value of euro notes in circulation has risen to more than €610 billion, equivalent to US$800 billion at the exchange rates at this time.

World currency

In the foreign exchange market and international finance, a world currency or global currency refers to a currency in which the vast majority of international transactions take place and which serves as the world’s primary reserve currency.

Federal Reserve System

The Federal Reserve System (also the Federal Reserve; informally The Fed) is the central banking system of the United States.

The Federal Reserve System is a quasi-governmental/quasi-private banking system composed of (1) the presidentially-appointed Board of Governors of the Federal Reserve System in Washington, D.C.; (2) the Federal Open Market Committee; (3) 12 regional Federal Reserve Banks located in major cities throughout the nation acting as fiscal agents for the U.S. Treasury, each with their own nine-member board of directors; (4) numerous private U.S. member banks, which subscribe to required amounts of non-transferable stock in their regional Federal Reserve Bank; and (5) various advisory councils.

Currently, Ben Bernanke serves as the Chairman of the Board of Governors of the Federal Reserve System.

Fractional-reserve banking

Fractional-reserve banking refers to the common banking practice of issuing more money than the bank holds as reserves. Banks in modern economies typically loan their customers many times the sum of the cash reserves that they hold.

Full-reserve banking

Full-reserve banking is a theoretically conceivable banking practice in which all deposits, banknotes, and notes in a financial system would be backed up by assets with a store of value. This does not imply the existence of a government body (such as a central bank) that would convert currency to a more stable type of asset if requested to do so. A bank could engage in full reserve banking by issuing private currency backed by a commodity. It requires that the resources available to the banks issuing credit money and demand deposits would be sufficient to convert all currency at once if so required. It was a central component in Social Credit proposals.