...the CPI doesn't account for the "anhedonic pain" of substitution, to poke fun at their own terminology.
Yes it does, or at least it attempts to. The hedonic penalties are exactly the hedonic benefits with a minus sign.
If guacamole is 2x as good as salsa, then if the price of guacamole doubles from $5 to $10 and consumers switch to $3 salsa, then mexican dips have increased in price 17%.
Look, I'm not saying a good job is done. In fact, I've argued many times that inflation is wildly overstated. I'm just saying that the hedonic adjustments and substitution adjustments are necessary if you want to have any sort of CPI-like measurement.
Of course, it's also the case that CPI doesn't actually measure inflation. To get a real inflation measure, you'd need to measure the price of a fixed basket of goods. But then no statistic like CPI would even be possible, since inflation would no longer be a rate - Inflation(1970, 2012) would not be equal to Inflation(1970, 1990) x Inflation(1990, 2012).
Yes it does, or at least it attempts to. The hedonic penalties are exactly the hedonic benefits with a minus sign.
If guacamole is 2x as good as salsa, then if the price of guacamole doubles from $5 to $10 and consumers switch to $3 salsa, then mexican dips have increased in price 17%.
Look, I'm not saying a good job is done. In fact, I've argued many times that inflation is wildly overstated. I'm just saying that the hedonic adjustments and substitution adjustments are necessary if you want to have any sort of CPI-like measurement.
Of course, it's also the case that CPI doesn't actually measure inflation. To get a real inflation measure, you'd need to measure the price of a fixed basket of goods. But then no statistic like CPI would even be possible, since inflation would no longer be a rate - Inflation(1970, 2012) would not be equal to Inflation(1970, 1990) x Inflation(1990, 2012).