Autor: Steve Keen

University of Western Sydney

Instability may not be optional

Sydney Morning Herald commentator Gareth Hutchens commented that the Rogoff and Reinhart affair shows how slow economists are to realise that their data may be dodgy, but to my mind that is insignificant compared to how slow they are to realise that their theories are dodgier still.

A defining feature of mainstream economic modelling is the belief that the economy is stable: given any disturbance, it will ultimately return to a state of tranquil growth. Mainstreamers argue over how fast this will happen: Chicago/Freshwater /New Classicals argue it adjusts instantly, while Saltwalter/New Keynesians say it will take time because of ‘frictions’ in the economy’s adjustment processes. But they both take the innate stability of the economy for granted, and this belief is hard-coded into their mathematical models
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