This article represents my initial comments on the question of the stability implications of locking interest rates at zero. Martin Watts, an Australian academic, had an interesting presentation at the first Modern Monetary Theory (MMT) conference (link to videos of presentations). Although MMT fits within a broad-tent definition of "post-Keynesian" economics, there are still sharp debates with other post-Keynesians. One topic of debate is the effect of permanently locking the policy...
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