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> First, overall, the US has increased manufacturing output over the last couple decades. 2019 was the highest year ever, covid interupted a bit, but levels are back there again. No, supposed quality adjustments hide lower production volumes: https://www.palladiummag.com/2025/10/03/how-gdp-hides-indust... > Motor vehicles, bodies and trailers, and parts: actual light vehicles produced down 11%, real gross output of vehicles up 39%, real value-added up 125%. Inputs as a percent of gross output rose from 74% to 77%. > Steel mills & manufacturing from purchased steel: in raw tonnage, steel shipped is down 18%, real gross output is up 5%, real value-added is up 125%. Inputs as a percentage of gross output rose from 73% to 74%. > If the quality adjustment is 32%, the value-added increase becomes 652%! > Another “quirk” of real value-added is that inflation adjustments and quality adjustments get applied retroactively, which creates wild inflections from small changes. In simplified terms, let’s say that, in 1997, car sales were $100 billion, and were still $100 billion twenty years later in 2017, with no changes due to inflation or input costs. Input costs in both years were $75 billion, meaning $25 billion in value-added in both years. The only thing that changed, let’s say, was that the “quality” of cars got 10% higher thanks to software innovations like Apple CarPlay and design improvements like crumple zones for safety—neither of which add to recurring production input costs. So, let’s say, our economists would adjust the 2017 figure to be $110 billion in “real” terms and show a small 10% increase, right? > > Instead, the way it works is that a recent “base year” is taken, in this case 2017, and the base year is never adjusted. So rather than adjusting from $100 billion to $110 billion, the “real” output of 1997 is retroactively adjusted to be lower, in this case $91 billion, to get the same 10% increase. But then, our value-added in 1997 has fallen to $16 billion, and the increase in “real value-added manufacturing” has jumped from 10% to around 50%! We have created a 50% increase in car manufacturing not by actually producing 50% more cars or “objectively” making cars 50% better, but just by playing around with statistics and definitions. |