Comment by elektronika

CPI functions to obscure disproportionate price increases in essentials by lumping them in with cheapening commodities (e.g. electronics) that have a high demand elasticity. It's as much a choice to to use CPI to come to the conclusion things are fine, as it would be picking "arbitrary items" such as the essentials: food, shelter, medical care, and transportation that would paint a picture distinctly less fine.