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Mr. Keynes, Prof. Krugman, IS-LM, and the End of Economics as We Know It

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  • Kakarot-Handtke, Egmont

Abstract

Krugman has recently revitalized IS-LM with a number of succinct analytical pieces on his blog. The reverberations were remarkable. Economists, however, are known often not grasp the full content of their own and, a fortiori, of others’ models. This happened to Keynes in the days of high theory and to Krugman in these days. Keynes applied a defect formalism, which is here replaced by objective-structural axioms. This yields the correct relationship between retained profit, saving, and investment which in turn makes it clear after the event that the IS-part of the IS-LM construct never could bear any substantive theoretical load.

Suggested Citation

  • Kakarot-Handtke, Egmont, 2014. "Mr. Keynes, Prof. Krugman, IS-LM, and the End of Economics as We Know It," MPRA Paper 53608, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:53608
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    References listed on IDEAS

    as
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    6. L.Randall Wray, 1991. "Saving, Profits, and Speculation in Capitalist Economies," Journal of Economic Issues, Taylor & Francis Journals, vol. 25(4), pages 951-975, December.
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    More about this item

    Keywords

    new framework of concepts; structure-centric; axiom set; Hicks; Allais;
    All these keywords.

    JEL classification:

    • B59 - Schools of Economic Thought and Methodology - - Current Heterodox Approaches - - - Other
    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory
    • E13 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Neoclassical

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