by From Asad Zaman This post is the third part of lecture 8 of Advanced Macro L08C: Fisher’s Debt-Deflation Theory of the Great Depression. In previous segments of this lecture L08A: Micro-Foundations for Keynesian Economics, and L08B: Keynesian Explanation for Great Depression: Seriously Incomplete, we examined the Keynesian explanation for the Great Depression, and found serious deficiencies in it. L08A explains that many different kinds of outcomes, with and without unemployment, are possible depending on how we specify details of the micro-structure that Keynes failed to specify. L08B explains that a simple deficiency in aggregate demand created by savings does not suffice to create unemployment because savings of current period is income/wealth of the next. It is necessary to look at
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This post is the third part of lecture 8 of Advanced Macro L08C: Fisher’s Debt-Deflation Theory of the Great Depression. In previous segments of this lecture L08A: Micro-Foundations for Keynesian Economics, and L08B: Keynesian Explanation for Great Depression: Seriously Incomplete, we examined the Keynesian explanation for the Great Depression, and found serious deficiencies in it. L08A explains that many different kinds of outcomes, with and without unemployment, are possible depending on how we specify details of the micro-structure that Keynes failed to specify. L08B explains that a simple deficiency in aggregate demand created by savings does not suffice to create unemployment because savings of current period is income/wealth of the next. It is necessary to look at abnormal savings, together with fixed prices, to create surplus production which signals shortfall in aggregate demand to the producers. Thus, many elements – micro-structure, role of debt, and different sectors of the economy – must be added to the Keynesian model to achieve the outcome of unemployment due to shortfall in aggregate demand that is at the center of Keynesian analysis. read more