Money, Investment and Saving

  • Gordon A. Fletcher
Part of the Keynesian Studies book series (KST)


The distinction between the uncertainty world of reality and the purely theoretical world of perfect knowledge is the real meaning behind J. M. Keynes’s proposition that a monetary economy is different from a barter economy. It is a distinction fundamental to his whole approach and central to his assault on ‘classical’ macroeconomics. The ‘monetary economy’ is the real, money-using world of uncertainty. The ‘barter economy’ is the purely abstract world of classical theory in which perfect information ensures that money has no substantive form, so that exchange is in effect direct and the economy is of barter-type. Keynes argued that:

The whole object of the accumulation of Wealth is to produce results, or potential results, at a comparatively distant, and sometimes at an indefinitely distant, date. Thus the fact that our knowledge of the future is fluctuating, vague and uncertain, renders Wealth a peculiarly unsuitable subject for the methods of classical economic theory.1


Monetary Policy Monetary Economy Money Balance Loanable Fund Abstract World 
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Notes and References

  1. 1.
    J. M. Keynes, ‘The General Theory of Employment’, The Quarterly Journal of Economics (Feb. 1937) p. 213.Google Scholar

Copyright information

© Gordon A. Fletcher 1989

Authors and Affiliations

  • Gordon A. Fletcher
    • 1
  1. 1.The University of LiverpoolUK

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