Earlier quoted context omitted.
> It's using a fixed value of goods The CPI basket is definitely not fixed. It is constantly evolving to ensure that the metric is useful. Consumption habits are not fixed. > The price of a dollar is one dollar. Technically true, just like the price of one iPhone is the price of one iPhone (assuming equivalent specs), but in the real world price is used to compare the value of different things. Currently, the price o…
The basket shifts but it's trying to stay equivalent . Not in dollar terms but in benefit terms. If it's not trying to have a stable value then it's not a useful measuring stick.
Steak is objectively more valuable in the traditional sense, as evidenced by the price, and also quite arguably more valuable than ground beef in the "benefit" sense, but that doesn't matter. Ground beef is just as good in the basket as CPI only needs to see relative change in price. It is not measuring benefit.