Here is one of his charts that gives a unique view to the CPI data that I have not seen expressed elsewhere and is worthy of emulation and further extension..
Doug's breakdown of the component changes is also highly revealing.
- it shows the cumulative impact of inflation over an almost 12 year period
- it breaks down the overall cpi effects into a series of selected and interesting sub-components which show a wide range of cumulative change during this time period.
- it reveals Doug's thinking about which of the subcomponents he things might be the most important to pay closer attention to (Energy, Medical Care, and Tuition)
- And with a little thought it lets us get a hint about how the average headline cpi cumulative increase of 34.2% came about from a weighted average of the three (left most) componentss: a core cpi reading of 26.3% an energy reading of 124% and a food reading of 37.7%. To me this showed up the weakness of focusing on either the headline cpi number or the core cpi number whether by themselves or even when combined becasue doing so leaves the cumulative impact of energy and food invisible to the viewer.