Gazdasági rendszerelmélet és általános egyensúlyelmélet

Economic systems theory and general equilibrium theory

János Kornai

Közgazdasági Szemle (Economic Review - monthly of the Hungarian Academy of Sciences), 2022, vol. LXIX, issue 1, 3-19

Abstract: The present age has placed a new question before economics: how should economic systems be deliberately shaped and planned in detail, and their functional mechanism developed? The author states that economics is not yet capable of providing an answer based on a proven theory. This lack must be made up for by economic systems theory". There has existed hitherto a single established school of economic systems: the general equilibrium theory. Here the author expounds some theorems that criticize this theory. - The assumption that certain economic phenomena are constant over time prevents the examination of change, though this is a fundamental problem of life. - Optimality" and maximization" are not good assumptions for describing the activity and actual behaviour of complex economic organizations, since they hide the diverse, real motive powers motivating enterprise activity. - The assumption of convexity excludes the case of economies of scale, although this is a group of phenomena of fundamental importance to concentration. - The general equilibrium theory builds on a simple system of control and signals because it neglects uncertainty. Yet uncertainty exists in reality, and so information must be multiple in the interest of reliable control. - It is claimed that better conclusions would be reached if the creative efforts of whole generations of economists to develop a systems theory were more suited to describing the functioning of economic systems in a better and more realistic way.

JEL-codes: P1 P2 P3 P5 (search for similar items in EconPapers)
Date: 2022
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DOI: 10.18414/KSZ.2022.1.3

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