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Classical economics and many of its ideas remain fundamental in economics, though the theory itself has yielded, since the 1870s, to neoclassical economics. Other ideas have either disappeared from neoclassical discourse or been replaced by Keynesian economics in the Keynesian Revolution and neoclassical synthesis .
Classical economics focuses on the tendency of markets to move to equilibrium and on objective theories of value. Neo-classical economics differs from classical economics primarily in being utilitarian in its value theory and using marginal theory as the basis of its models and equations. Marxian economics also descends from classical theory.
Budget theory is the academic study of political and social motivations behind government and civil society budgeting. Classic theorists in Public Budgeting include Henry Adams , William F. Willoughby , V. O. Key, Jr. , and, more recently, Aaron Wildavsky .
The earlier term for the discipline was "political economy", but since the late 19th century, it has commonly been called "economics". [22] The term is ultimately derived from Ancient Greek οἰκονομία (oikonomia) which is a term for the "way (nomos) to run a household (oikos)", or in other words the know-how of an οἰκονομικός (oikonomikos), or "household or homestead manager".
The Arthashastra posits the theory that there are four necessary fields of knowledge: the Vedas, the Anvikshaki (philosophy of Samkhya, Yoga and Lokayata), the science of government, and the science of economics (Varta of agriculture, cattle, and trade). It is from these four that all other knowledge, wealth, and human prosperity is derived.
The new classical school culminated in real business cycle theory (RBC). Like early classical economic models, RBC models assumed that markets clear and that business cycles are driven by changes in technology and supply, not demand.
For example, advocates of Real Business Cycle Theory [citation needed] argue that real shocks cause recessions and that the market responds efficiently to these real economic shocks. Krugman dismisses Say's law as, "at best, a useless tautology when individuals have the option of accumulating money rather than purchasing real goods and services".
In neoclassical economics, on the other hand, the preoccupation with society's long term growth and development inherent in classical economics was abandoned altogether; instead, economic analysis came to focus on the study of the relationship between given ends and given scarce means, forming the concept of general equilibrium theory within an ...