Let Them Eat Hamburger
In the early 1990s, press reports began surfacing as to how the CPI really was significantly overstating inflation. If only the CPI inflation rate could be reduced, it was argued, then entitlements, such as social security, would not increase as much each year, and that would help to bring the budget deficit under control. Behind this movement were financial luminaries Michael Boskin, then chief economist to the first Bush Administration, and Alan Greenspan, Chairman of the Board of Governors of the Federal Reserve System.
Although the ensuing political furor killed consideration of Congressionally mandated changes in the CPI, the BLS quietly stepped forward and began changing the system, anyway, early in the Clinton Administration.
Up until the Boskin/Greenspan agendum surfaced, the CPI was measured using the costs of a fixed basket of goods, a fairly simple and straightforward concept. The identical basket of goods would be priced at prevailing market costs for each period, and the period-to-period change in the cost of that market basket represented the rate of inflation in terms of maintaining a constant standard of living.
The Boskin/Greenspan argument was that when steak got too expensive, the consumer would substitute hamburger for the steak, and that the inflation measure should reflect the costs tied to buying hamburger versus steak, instead of steak versus steak. Of course, replacing hamburger for steak in the calculations would reduce the inflation rate, but it represented the rate of inflation in terms of maintaining a declining standard of living. Cost of living was being replaced by the cost of survival. The old system told you how much you had to increase your income in order to keep buying steak. The new system promised you hamburger, and then dog food, perhaps, after that.
The Boskin/Greenspan concept violated the intent and common usage of the inflation index. The CPI was considered sacrosanct within the Department of Labor, given the number of contractual relationships that were anchored to it. The CPI was one number that never was to be revised, given its widespread usage.
Shortly after Clinton took control of the White House, however, attitudes changed. The BLS initially did not institute a new CPI measurement using a variable-basket of goods that allowed substitution of hamburger for steak,
but rather tried to approximate the effect by changing the weighting of goods in the CPI fixed basket. Over a period of several years, straight arithmetic weighting of the CPI components was shifted to a geometric weighting. The Boskin/Greenspan benefit of a geometric weighting was that it automatically gave a lower weighting to CPI components that were rising in price, and a higher weighting to those items dropping in price.
Once the system had been shifted fully to geometric weighting, the net effect was to reduce reported CPI on an annual, or year-over-year basis, by 2.7% from what it would have been based on the traditional weighting methodology. The results have been dramatic. The compounding effect since the early-1990s has reduced annual cost of living adjustments in social security by more than a third.
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There now are three major CPI measures published by the BLS, CPI for All Urban Consumers (CPI-U), CPI for Urban Wage Earners and Clerical Workers (CPI-W) and the Chained CPI-U (C-CPI-U). The CPI-U is the popularly followed inflation measure reported in the financial media. It was introduced in 1978 as a more-broadly-based version of the then existing CPI, which was renamed CPI-W. The CPI-W is used in calculating Social Security benefits. These two series tend to move together and are based on frequent price sampling, which is supposed to yield something close to an average monthly price measure by component.
The C-CPI-U was introduced during the second Bush Administration as an alternate CPI measure. Unlike the theoretical approximation of geometric weighting to a variable, substitution-prone market basket, the C-CPI-U is a direct measure of the substitution effect. The difference in reporting is that August 2006 year-to-year inflation rates for the CPI-U and the C-CPI-U were 3.8% and 3.4%, respectively. Hence current inflation still has a 0.4% notch to be taken out of it through methodological manipulation. The C-CPI-U would not have been introduced unless there were plans to replace the current series, eventually.
Aside from the changed weighting, the average person also tends to sense higher inflation than is reported by the BLS, because of hedonics, as in hedonism. Hedonics adjusts the prices of goods for the increased pleasure the consumer derives from them. That new washing machine you bought did not cost you 20% more than it would have cost you last year, because you got an offsetting 20% increase in the pleasure you derive from pushing its new electronic control buttons instead of turning that old noisy dial, according to the BLS.
When gasoline rises 10 cents per gallon because of a federally mandated gasoline additive, the increased gasoline cost does not contribute to inflation. Instead, the 10 cents is eliminated from the CPI because of the offsetting hedonic thrills the consumer gets from breathing cleaner air. The same principle applies to federally mandated safety features in automobiles. I have not attempted to quantify the effects of questionable quality adjustments to the CPI, but they are substantial.
Then there is "intervention analysis" in the seasonal adjustment process, when a commodity, like gasoline, goes through violent price swings. Intervention analysis is done to tone down the volatility. As a result, somehow, rising gasoline prices never seem to get fully reflected in the CPI, but the declining prices sure do.
How Can So Many Financial Pundits Live Without Consuming Food and Energy?
The Pollyannas on Wall Street like to play games with the CPI, too. The concept of looking at the "core" rate of inflation-net of food and energy-was developed as a way of removing short-term (as in a month or two) volatility from inflation when energy and/or food prices turned volatile. Since food and energy account for about 23% of consumer spending (as weighted in the CPI), however, related inflation cannot be ignored for long. Nonetheless, it is common to hear financial pundits cite annual "core" inflation as a way of showing how contained inflation is. Such comments are moronic and such commentators are due the appropriate respect.
http://www.shadowstats.com/article/consumer_price_index
You may have anticipated the mortgage crisis but nobody that I am aware of put all the ducks in a row as far as the contributors to the financial crisis. Everyone seemed to have a piece or two, but never the entire pie.
property ownership in the UK (06) because I didn't want to get stuck there with dwindling equity. 
