In a nutshell…US economist’s miscalculation of the hedonic value of the computer subsector gave the USA President Trump.
The epic mistake about manufacturing that's cost Americans millions of jobs — Quartz
"Thanks to a painstaking analysis by a handful of economists, it’s become clear that the data that underpin the dominant narrative—or more precisely, the way most economists interpreted the data—were way off-base."
Hedonic regression - Wikipedia
What Does "Hedonic" Mean in an Economic Context?