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Mmmm... I obviously don't buy that recessions are caused by negative technology shocks, but it's reasonable to think that a technology shock can trigger a boom, and a recession follows from overinvestment

It wasn't that the idea was utterly implausible but the technical theory was silly.

My recollection is that the thing they called a technology shock wasn't (it was just a residual) and the thing they called a recession wasn't (it was just a deviation from the long term growth trend).

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labeling the unexplained part and calling it a theory is a time tested academic tradition, like dark matter in physics

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I'm well aware. I work with people who devote a lot of time to studying and publishing about a particular residual, seemingly without realizing that's what they're doing.

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