The GDP - Gross domestic product of a country is a measure of the size of its economy. While often useful, it should be noted that GDP only includes economic activity for which money is exchanged. GDP and GDP per capita are widely used by both specialized and non-specialized literature.
Informal economy
An informal economy is economic activity that is neither taxed nor monitored by a government, contrasted with a formal economy. The informal economy is thus not included in that government's Gross National Product (GNP). Although the informal economy is often associated with developing countries, all economic systems contain an informal economy in some proportion.
Informal economic activity is a dynamic process which includes many aspects of economic and social theory including exchange, regulation, and enforcement. By its nature, it is necessarily difficult to observe, study, define, and measure. No single source readily or authoritatively defines informal economy as a unit of study.
The terms "under the table" and "off the books" typically refer to this type of economy. The term black market refers to a specific subset of the informal economy. The term "informal sector" was used in many earlier studies, and has been mostly replaced in more recent studies which use the newer term.
Micro economics are focused on an individual person in a given economic society and Macro economics is looking at an economy as a whole. (town, city, region)
Starting in England, simultaneous related processes of mechanization, and the enclosures of the commons, led to increases in wealth for the controllers of capital, and mass poverty, starvation, urbanization and pauperization for much of the population. This led some, such as Karl Marx (1818-1883) and the German industrialist and philosopher Friedrich Engels, (1820-1895) to describe economy as the "system of capitalism".
Capitalism is characterized by the division of labor between worker and capitalist, in which the means of production are separated from the direct producers and are instead owned by a parasitical capitalist class. Marx and Engels believed that under capitalism, the working class produces surplus value, of which only a small percentage is returned to workers in the form of wages to provide for their bare subsistence. The rest of the surplus value is kept as profit, and is reinvested into the commodity cycle by the capitalist. The competitive forces of the market will drive capital to constantly accumulate "for the sake of more accumulation", resulting in monopolies, economic crisis and imperialism.
Marx and Engels viewed capitalism as a historically-specific mode of production, as with feudalism and hunter-gatherer societies, embedded with its own internal contradictions. Capitalism is the first mode of production in which the direct producers have no control over their conditions of labour or the means of production.
The declining living conditions of the working class would drive workers to collectively fight back as part of a class struggle, eventually overthrowing the capitalist state in a proletarian revolution and establishing a democratically planned economy, in which production is controlled by the direct producers themselves - the proletariat - in order to satisfy human needs, not accumulation of profits. Thus in the Communist Manifesto, Marx and Engels state that capitalism, in bringing to existence an urbanized working class, has created its own "gravediggers", as well as the material conditions and abundance ripe for a classless socialist society.
After the chaos of two World Wars and the devastating Great Depression, policymakers searched for new ways of controlling the course of the economy. This was explored and discussed by Friedrich August von Hayek (1899-1992) and Milton Friedman (1912-2006) who pleaded for a global free trade and are supposed to be the fathers of the so called neoliberalism. However, the prevailing view was that held by John Maynard Keynes (1883-1946), who argued for a stronger control of the markets by the state. The theory that the state can alleviate economic problems and instigate economic growth through state manipulation of aggregate demand is called Keynesianism in his honor. In the late 1950s the economic growth in America and Europe—often called Wirtschaftswunder (ger: economic miracle) —brought up a new form of economy: mass consumption economy. In 1958 John Kenneth Galbraith (1908-2006) was the first to speak of an affluent society. In most of the countries the economic system is called a social market economy.
Postmodern economy
What economist Robert Reich terms, "the not quite golden age" (WW II to the mid-1970s) gave way to the current global economy, or supercapitalism.[6] This economic revolution took place in tandem with a radical transformation of Western cultures, and the growth of oligarchical/plutocratic tendencies within the polities of Western democracies. Together the political, economic and cultural developments in the Western World since c. 1963 constitute what Robert Struble has called "the postmodernist revolution."[7]
Economists Gibson-Graham, J.K. (2006) in A Postcapitalist Politics, University of Minnesota Press, pp. 181, ISBN 0816648042, describe a model of community capitalism described at E2m.org and designated as E2M [11] by founder Michael Garjian which creates the infrastructures that enable communities, as entities, to use the tool of capitalism to create significant amounts of community wealth. Under the E2M model, communities share in the equity of corporations which are then patronized by community members, thus creating income streams to the E2M Regional Economic Councils (E2M-REC) which act in the best interests of the regional community. Wealth earned by the community under E2M is then invested in additional business start-ups in which the E2M-REC owns even more equity. As the community wealth held by the E2M-REC grows, investments in businesses increase as well as social investments which can include, but are not limited to mortgages of 50 year terms and 1 percent interest rates, purchases of commercial and residential realty to be rented at stable rates over decades, and other investments based on the goal of achieving adequate profits and sustainable growth for the common good. This counterbalances the traditional investment goal of maximum profits and maximum growth for the private investor which is an unsustainable investment criteria that endangers the planet and those who inhabit it.
Economic sectors
The economy includes several sectors (also called industries), that evolved in successive phases.
The industrial revolution lessened the role of subsistence farming, converting it to more extensive and monocultural forms of agriculture in the last three centuries. The economic growth took place mostly in mining, construction and manufacturing industries.
In modern economies, there are four main sectors of economic activity:[citation needed]
Primary sector of the economy: Involves the extraction and production of raw materials, such as corn, coal, wood and iron. (A coal miner and a fisherman would be workers in the primary sector.)
Secondary sector of the economy: Involves the transformation of raw or intermediate materials into goods e.g. manufacturing steel into cars, or textiles into clothing. (A builder and a dressmaker would be workers in the secondary sector.)
Tertiary sector of the economy: Involves the provision of services to consumers and businesses, such as baby-sitting, cinema and banking. (A shopkeeper and an accountant would be workers in the tertiary sector.)
Quaternary sector of the economy: Involves the research and development needed to produce products from natural resources. (A logging company might research ways to use partially burnt wood to be processed so that the undamaged portions of it can be made into pulp for paper.) Note that education is sometimes included in this sector.
More details about the various phases of economic development belong to the history section on this article. As this process was far from being homogeneous geographically, the balance between these sectors differs widely among the various regions of the world.
As long as someone has been making and distributing goods or services, there has been some sort of economy; economies grew larger as societies grew and became more complex. Sumer developed a large scale economy based on commodity money, while the Babylonians and their neighboring city states later developed the earliest system of economics as we think of, in terms of rules/laws on debt, legal contracts and law codes relating to business practices, and private property.[1] This was the beginning of the price system as is known today, when it was formalized.[2]
The Babylonians and their city state neighbors developed forms of economics comparable to currently used civil society (law) concepts.[3] They developed the first known codified legal and administrative systems, complete with courts, jails, and government records.
Several centuries after the invention of cuneiform, the use of writing expanded beyond debt/payment certificates and inventory lists to be applied for the first time, about 2600 BC, to messages and mail delivery, history, legend, mathematics, astronomical records and other pursuits. Ways to divide private property, when it is contended... amounts of interest on debt... rules as to property and monetary compensation concerning property damage or physical damage to a person... fines for 'wrong doing'... and compensation in money for various infractions of formalized law were standardized for the first time in history.[1]
The ancient economy was mainly based on subsistence farming. The Shekel referred to an ancient unit of weight and currency. The first usage of the term came from Mesopotamia circa 3000 BC. and referred to a specific mass of barley which related other values in a metric such as silver, bronze, copper etc. A barley/shekel was originally both a unit of currency and a unit of weight... just as the British Pound was originally a unit denominating a one pound mass of silver.
According to Herodotus, and most modern scholars, the Lydians were the first people to introduce the use of gold and silver coin.[4] It is thought that these first stamped coins were minted around 650-600 BC.[5] A stater coin was made in the stater (trite) denomination. To complement the stater, fractions were made: the trite (third), the hekte (sixth), and so forth in lower denominations.
For most people the exchange of goods occurred through social relationships. There were also traders who bartered in the marketplaces. In Ancient Greece, where the present English word 'economy' originated, many people were bond slaves of the freeholders. Economic discussion was driven by scarcity. Aristotle (384-322 B.C.) was the first to differentiate between a use value and an exchange value of goods. (Politics, Book I.) The exchange ratio he defined was not only the expression of the value of goods but of the relations between the people involved in trade. For most of the time in history economy therefore stood in opposition to institutions with fixed exchange ratios as reign, state, religion, culture, and tradition.[citation needed]
Middle ages
In Medieval times, what we now call economy was not far from the subsistence level. Most exchange occurred within social groups. On top of this, the great conquerors raised venture capital (from ventura, ital.; risk) to finance their captures. The capital should be refunded by the goods they would bring up in the New World. Merchants such as Jakob Fugger (1459-1525) and Giovanni di Bicci de' Medici (1360-1428) founded the first banks.[citation needed] The discoveries of Marco Polo (1254-1324), Christopher Columbus (1451-1506) and Vasco de Gama (1469-1524) led to a first global economy. The first enterprises were trading establishments. In 1513 the first stock exchange was founded in Antwerpen. Economy at the time meant primarily trade.
An economy is the ways in which people use their environment to meet their material needs. It is the realized economic system of a country or other area. It includes the production, exchange, distribution, and consumption of goods and services of that area. The study of different types and examples of economies is the subject of economic systems. A given economy is the end result of a process that involves its technological evolution, history and social organization, as well as its geography, natural resource endowment, and ecology, among other factors. These factors give context, content, and set the conditions and parameters in which an economy functions.
The word "economy" can be traced back to the Greek word "one who manages a household", derived from οἴκος, "house", and νÎμω, "distribute (especially, manage)". From οἰκονόμος "of a household or family" but also senses such as "thrift", "direction", "administration", "arrangement", and "public revenue of a state". The first recorded sense of the word "economy", found in a work possibly composed in 1440, is "the management of economic affairs", in this case, of a monastery. Economy is later recorded in other senses shared by οἰκονομία in Greek, including "thrift" and "administration". The most frequently used current sense, "the economic system of a country or an area", seems not to have developed until the 19th or 20th century.
Economic methodology is the study of methods, usually scientific method, in relation to economics, including principles underlying economic reasoning.[1][2] The term 'methodology' is also commonly, though incorrectly, used as an impressive synonym for method(s). Rather, methodology is the study of method(s).
Many of the general issues that arise in the methodology of the natural sciences also apply to economics. Related or other issues have included:
analysis of theory and practice in contemporary economics.[32]
Economic methodology has gone from periodic reflections of economists on method to a distinct research field in economics since the 1970s. In one direction, it has expanded to the boundaries of philosophy, including the relation of economics to the philosophy of science and to the theory of knowledge.[33][34] In the context of philosophy and economics, additional subjects are treated as well, including decision theory and moral philosophy/ethics.[35][36][37]
Commonly-accepted methods and subjects in economics are described as mainstream economics. Heterodox economics includes other approaches that are in various ways presented as alternatives to or criticisms of mainstream economics.
From the 1970s onwards Friedman's monetarist critique of Keynesian macroeconomics formed the starting point for a number of trends in macroeconomic theory opposed to the idea that government intervention can or should stabilise the economy. Robert Lucas criticized Keynesian thought for its inconsistency with microeconomic theory. Lucas's critique set the stage for a neoclassical school of macroeconomics, New Classical economics based the foundation of classical economics. Lucas also popularized the idea of rational expectations, which was used as the basis for several new classical theories including the Policy Ineffectiveness Proposition.
The standard model for new classical economics is the real business cycle theory, which sought to explain observed fluctuations in output and employment in terms of real variables such as changes in technology and tastes. Assuming competitive markets, real business cycle theory implied that cyclical fluctuations are optimal responses to variability in technology and tastes, and that macroeconomic stabilisation policies must reduce welfare.
Keynesian economic made a comeback among mainstream economists with the advent of New Keynesian macroeconomics. The central theme of new Keynesianism was the provision of a microeconomic foundation for Keynesian macroeconomics, obtained by identifying minimal deviations from the standard microeconomic assumptions which yield Keynesian macroeconomic conclusions, such as the possibility of significant welfare benefits from macroeconomic stabilization. Akerlof’s ‘menu costs’ arguments, showing that, under imperfect competition, small deviations from rationality generate significant (in welfare terms) price stickiness, are good example of this kind of work.
Developments in microeconomics
From the 1970s onwards, microeconomics saw a resurgence of interest in the ideas of game theory, first developed by von Neumann and Morgenstern in 1944. One focus was on exploring and refining the concept of Nash equilibrium.
Financial economics
The efficient-market hypothesis (EMH) formed the core of financial economics for most of the later 20th century. The theory, associated with Eugene Fama, held that the current price of an asset, such as a stock, fully represented all information about the asset. This theory implied that it would be difficult, if not impossible, to consistently beat the typical market return on assets. The theory also dismissed technical analysis, and argued that an asset price followed a random walk—meaning an asset's future price movements were independent of its past movements. Economists used neoclassical rational expectations to support the theory. Instead of trying to pick winning investments, adherents of the EMH focused on modern portfolio theory, which showed how to diversify risks to maximize likely profits. The persistence of financial bubbles has cast doubt on the empirical validity of the EMH, as the market often appears to be driven by irrational exuberance. Recent research in behavioral finance and other fields have disputed the EMH on theoretical grounds, offering alternative models for financiers' behavior.
Behavioral economics
Behavioral economics and behavioral finance are closely related fields that have evolved to be a separate branch of economic and financial analysis, which applies scientific research on human and social, cognitive and emotional factors to better understand economicdecisions by consumers, borrowers, investors, and how they affect market prices, returns and the allocation of resources.
Environmental and ecological economics
By the 20th century, the industrial revolution had led to an exponential increase in the human consumption of resources. The increase in health, wealth and population was perceived as a simple path of progress. However, in the 1930s economists began developing models of non-renewable resource management (see Hotelling's Rule) and the sustainability of welfare in an economy that uses non-renewable resources (Hartwick's Rule).
The work of economists Nicholas Georgescu-Roegen and Herman Daly was important in the development of ecological economics. In the Entropy law and the Economic Process (1971), Roegan attempted to demonstrate that the mathematical analysis of production in neoclassical economics is badly flawed because it fails to incorporate the laws of thermodynamics. In his view, an economy must be viewed in thermodynamic terms as a unidirectional flow in which inputs of low entropy matter and energy are used to produce two kinds of outputs, goods and services and high entropy waste and degraded matter.[81] Since neoclassical economic theory in that view, assigns value only to the first output and completely ignores the costs associated with the second, Georgescu-Roegen attempted to refashion this theory to include these costs.[82]Biophysical economics attempts to factor in aspects of energy and environment.[83]Energy economics which relates to biophysical economics also attempts to factor in thermodynamic aspects of energy and environment.[84] One technique for evaluating energy systems is net energy analysis, which seeks to compare the amount of energy delivered to society by a technology to the total energy required to find, extract, process, deliver, and otherwise upgrade that energy to a socially useful form. Energy return on investment (EROEI) is the ratio of energy delivered to energy costs. Biophysical and ecological economists argue that net energy analysis has several advantages over standard economic analysis.
Amartya Sen (born 1933) is a leading development and welfare economist and has expressed considerable skepticism on the validity of neo-classical assumptions. He was highly critical of rational expectations theory, and devoted his work to development and human rights. He won the Nobel Prize in Economics in 1998.
Joseph E. Stiglitz
Joseph Stiglitz (born 1943) Received the Nobel Prize in 2001 for his work in information economics. He has served as chairman of President Clinton's Council of Economic Advisors and as chief economist for the World Bank. Stiglitz has taught at many universities, including Columbia, Stanford, Oxford, Yale, and MIT. In recent years he has become an outspoken critic of global economic institutions. He is a popular and academic author. In Making Globalization Work (2007), he offers an account of his perspectives on issues of international economics.
"The fundamental problem with the neoclassical model and the corresponding model under market socialism is that they fail to take into account a variety of problems that arise from the absence of perfect information and the costs of acquiring information, as well as the absence or imperfections in certain key risk and capital markets. The absence or imperfection can, in turn, to a large extent be explained by problems of information.[80]
Paul Krugman
Paul Krugman (born 1953) is a contemporary economist. His textbook International Economics (2007) appears on many undergraduate reading lists. Well known as a representative of political liberalism, he writes a weekly column on economics, American economic policy, and American politics more generally in the New York Times. He was awarded the Nobel Prize in Economics in 2008 for his work on New Trade Theory and economic geography.
The interventionist monetary and fiscal policies that the orthodox post-war economics recommended came under attack in particular by a group of theorists working at the University of Chicago, which came to be known as the Chicago School. This more conservative strand of thought reasserted a "libertarian" view of market activity, that people are best left to themselves, free to choose how to conduct their own affairs. More academics who have worked at the University of Chicago have been awarded the Nobel Prize in Economics than those from any other university.
Ronald Coase
Ronald Coase (born 1910) is the most prominent economic analyst of law and the 1991 Nobel Prize winner. His first major article, The Nature of the Firm (1937), argued that the reason for the existence of firms (companies, partnerships, etc.) is the existence of transaction costs. Rational individuals trade through bilateral contracts on open markets until the costs of transactions mean that using corporations to produce things is more cost-effective. His second major article, The Problem of Social Cost (1960), argued that if we lived in a world without transaction costs, people would bargain with one another to create the same allocation of resources, regardless of the way a court might rule in property disputes. Coase used the example of an old legal case about nuisance named Sturges v Bridgman, where a noisy sweetmaker and a quiet doctor were neighbours and went to court to see who should have to move.[74] Coase said that regardless of whether the judge ruled that the sweetmaker had to stop using his machinery, or that the doctor had to put up with it, they could strike a mutually beneficial bargain about who moves house that reaches the same outcome of resource distribution. Only the existence of transaction costs may prevent this.[75] So the law ought to pre-empt what would happen, and be guided by the most efficient solution. The idea is that law and regulation are not as important or effective at helping people as lawyers and government planners believe.[76] Coase and others like him wanted a change of approach, to put the burden of proof for positive effects on a government that was intervening in the market, by analysing the costs of action.[77]
Milton Friedman
Milton Friedman (1912-2006) stands as one of the most influential economists of the late twentieth century. He won the Nobel Prize in Economics in 1976, among other things, for A Monetary History of the United States (1963). Friedman argued that the Great Depression had been caused by the Federal Reserve's policies through the 1920s, and worsened in the 1930s. Friedman argues laissez-faire government policy is more desirable than government intervention in the economy. Governments should aim for a neutral monetary policy oriented toward long-run economic growth, by gradual expansion of the money supply. He advocates the quantity theory of money, that general prices are determined by money. Therefore active monetary (e.g. easy credit) or fiscal (e.g. tax and spend) policy can have unintended negative effects. In Capitalism and Freedom (1967) Friedman wrote:
"There is likely to be a lag between the need for action and government recognition of the need; a further lag between recognition of the need for action and the taking of action; and a still further lag between the action and its effects.[78]
Friedman was also known for his work on the consumption function, the permanent income hypothesis (1957), which Friedman himself referred to as his best scientific work.[79] This work contended that rational consumers would spend a proportional amount of what they perceived to be their permanent income. Windfall gains would mostly be saved. Tax reductions likewise, as rational consumers would predict that taxes would have to rise later to balance public finances. Other important contributions include his critique of the Phillips curve and the concept of the natural rate of unemployment (1968). This critique associated his name with the insight that a government that brings about higher inflation cannot permanently reduce unemployment by doing so. Unemployment may be temporarily lower, if the inflation is a surprise, but in the long run unemployment will be determined by the frictions and imperfections in the labour market.
This sparked widespread discussion over how to interpret the different conditions of the theorem and what implications it had for democracy and voting. Most controversial of his four (1963) or five (1950/1951) conditions is the independence of irrelevant alternatives.
In the 1950s, Arrow and Gerard Debreu developed the Arrow-Debreu model of general equilibria. In 1971 Arrow with Frank Hahn co-authored General Competitive Analysis (1971), which reasserted a theory of general equilibrium of prices through the economy. In 1969 the Swedish Central Bank began awarding a prize in economics, as an analogy to the Nobel prizes awarded in Chemistry, Physics, Medicine as well as Literature and Peace (though Alfred Nobel never endorsed this in his will). With John Hicks, Arrow won the Bank of Sweden prize in 1972, the youngest recipient ever. The year before, US President Richard Nixon's had declared that "We are all Keynesians now".[73] The irony was that this was the beginning of a new revolution in economic thought.
After the war, John Kenneth Galbraith (1908-2006) became one of the standard bearers for pro-active government and liberal-democrat politics. In The Affluent Society (1958), Galbraith argued voters reaching a certain material wealth begin to vote against the common good. He argued that the "conventional wisdom" of the conservative consensus was not enough to solve the problems of social inequality.[70] In an age of big business, he argued, it is unrealistic to think of markets of the classical kind. They set prices and use advertising to create artificial demand for their own products, distorting people's real preferences. Consumer preferences actually come to reflect those of corporations—a "dependence effect"—and the economy as a whole is geared to irrational goals.[71] In The New Industrial State Galbraith argued that economic decisions are planned by a private-bureaucracy, a technostructure of experts who manipulate marketing and public relations channels. This hierarchy is self serving, profits are no longer the prime motivator, and even managers are not in control. Because they are the new planners, corporations detest risk, require steady economic and stable markets. They recruit governments to serve their interests with fiscal and monetary policy, for instance adhering to monetarist policies which enrich money-lenders in the City through increases in interest rates. While the goals of an affluent society and complicit government serve the irrational technostructure, public space is simultaneously impoverished. Galbraith paints the picture of stepping from penthouse villas onto unpaved streets, from landscaped gardens to unkempt public parks. In Economics and the Public Purpose (1973) Galbraith advocates a "new socialism" as the solution, nationalising military production and public services such as health care, introducing disciplined salary and price controls to reduce inequality.
Paul Samuelson
In contrast to Galbraith's linguistic style, the post-war economics profession began to synthesise much of Keynes' work with a mathematical representations. Introductory university economics courses began to present economic theory as a unified whole in what is referred to as the neoclassical synthesis. "Positive economics" became the term created to describe certain trends and "laws" of economics that be objectively observed and described in a value free way, separate from "normative economic" evaluations and judgments. The best selling textbook writer of this generation was Paul Samuelson. His Ph.D. was an attempt to show on how mathematical methods could represent a core of testable economic theory. It was published as Foundations of Economic Analysis in 1947. Samuelson started with two assumptions. First, people and firms will act to maximise their self interested goals. Second, markets tend towards an equilibrium of prices, where demand matches supply. He extended the mathematics to describe equilibrating behaviour of economic systems, including that of the then new macroeconomic theory of John Maynard Keynes. Whilst Richard Cantillon had imitated Isaac Newton's mechanical physics of inertia and gravity in competition and the market,[20] the physiocrats had copied the body's blood system into circular flow of income models, William Jevons had found growth cycles to match the periodicity of sunspots, Samuelson adapted thermodynamics formulae to economic theory. Reasserting economics as a hard science was being done in the United Kingdom also, and one celebrated "discovery", of A. W. Phillips, was of a correlative relationship between inflation and unemployment. The workable policy conclusion that securing full employment could be traded-off against higher inflation. Samuelson incorporated the idea of the Phillips curve into his work. His introductory textbook Economics was influential and widely adopted. It became the most successful economics text ever. Paul Samuelson was awarded the new Nobel Prize in Economics in 1970 for his merging of mathematics and political economy.
