"Hedonic adjustments" sounds like a term for "the number is whatever we want it to be but we want it to sound official so people don't question it." If you mix

"Hedonic adjustments" sounds like a term for "the number is whatever we want it to be but we want it to sound official so people don't question it." If you mix "hedonic adjustments" into every number then there is zero value in the numbers. There is no meaningful way to quantify a "hedonic adjustment". Is a smartphone a positive or negative "hedonic adjustment" relative to a landline? Lots of people would say it's positive. Lots would say it's negative. Nobody knows the actual answer because smartphones have only existed for a few years.