Did slope of Phillips curve fall 20 years ago? Or is the curve nonlinear when inflation is low -> age

Did slope of Phillips curve fall 20 years ago? Or is the curve nonlinear when inflation is low -> age of moderation appears to dissolve the relationship, which may become a real trade-off again, if inflation ever picks up. @GagnonMacro @chrisgcollins1
piie.com/system/files/d… https://t.co/n48wi7AKEO

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