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The Fundamental Theorems of Welfare Economics, DSGE and the Theory of Policy - Computable & Constructive Foundations

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  • K. Vela Velupillai

Abstract

The genesis and the path towards what has come to be called the DSGE model is traced, from its origins in the Arrow-Debreu General Equilibrium model (ADGE), via Scarf's Computable General Equilibrium model (CGE) and its applied version as Applied Computable General Equilibrium model (ACGE), to its ostensible dynamization as a Recursive Competitive Equilibrium (RCE). It is shown that these transformations of the ADGE - including the fountainhead - are computably and constructively untenable. The policy implications of these (negative) results, via the Fundamental Theorems of Welfare Economics in particular, and against the backdrop of the mathematical theory of economic policy in general, are also discussed (again from computable and constructive points of view). Suggestions for going 'beyond DSGE' are, then, outlined on the basis of a framework that is underpinned - from the outset - by computability and constructivity considerations

Suggested Citation

  • K. Vela Velupillai, 2011. "The Fundamental Theorems of Welfare Economics, DSGE and the Theory of Policy - Computable & Constructive Foundations," ASSRU Discussion Papers 1125, ASSRU - Algorithmic Social Science Research Unit.
    • Handle: RePEc:trn:utwpas:1125
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    File URL: http://www.assru.economia.unitn.it/files/DP_13_2011_II.pdf
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    References listed on IDEAS

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    Cited by:

    1. Katherine Moos, 2016. "The Transvaluation of the Theory of Economic Policy: The Lucas Critique Reconsidered," Working Papers 1603, New School for Social Research, Department of Economics.

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    More about this item

    Keywords

    Computable General Equilibrium; Dynamic Stochastic General Equilibrium; Computability; Constructivity; Fundamental Theorems of Welfare Economics; Theory of Policy; Coupled Nonlinear Dynamic;
    All these keywords.

    JEL classification:

    • C02 - Mathematical and Quantitative Methods - - General - - - Mathematical Economics
    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • C68 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computable General Equilibrium Models
    • D58 - Microeconomics - - General Equilibrium and Disequilibrium - - - Computable and Other Applied General Equilibrium Models
    • E61 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Policy Objectives; Policy Designs and Consistency; Policy Coordination

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