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how much of that instrument one is applying,
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because one is uncertain about
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what the multiplier of that instrument is,
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and because in the current context
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there are reasons to be concerned
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about the pernicious side effects of excessively low interest rates.
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Two stand out. The first--
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while in general I am very much with the Keynesian consensus that
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the inflation process depends upon aggregate demand,
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in the current context,
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lower interest rates may well contribute directly
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to the inflation process through their impact on the dollar