I'll go into Friedman's argument in more detail here, not for its historical interest, but because an essential part of it—the concept of "inflationary expectations"—still plays a major role in how Central Banks think they can control the economy.
Read PostAfter a long period of being low and even negative, inflation is now higher than it has been in almost 40 years. Though still well short of the twin peaks of 1975 and 1980, it is the fifth-highest rate recorded since the end of WWII, and it is still rising.
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