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Below is an extract from a commentary originally posted at www.speculative-investor.com on
9th November 2006.
In our 6th November commentary we made an effort to debunk the conventional
wisdom that stronger economic growth leads to a rise in the general price level.
Based on the feedback/questions received from several subscribers it is, we
think, worth providing some additional explanation on this important topic.
If you spend even a small amount of time each day reading the mainstream
financial press you could easily come away with the impression that there is
a positive correlation between growth and prices. It is often not expressed
exactly as "growth causes higher prices", but is, instead, portrayed
in terms of a supposed trade-off between economic growth and inflation (with
inflation, here, meaning a rise in the general price level). For example, on
Monday 6th November Michael Moskow, President of the Federal Reserve Bank of
Chicago, was quoted as saying: "The risk of inflation remaining too
high is greater than the risk of growth being too low, thus some additional
firming of policy may yet be necessary to bring inflation back to a range consistent
with price stability..." Then, on Tuesday, the Financial Times quoted
Federal Reserve Bank of Richmond President Jeffrey Lacker as saying that the
central bank had not been clear enough regarding "how it would respond
to the pass-through of energy cost increases to consumers in the shape of higher
prices", and that "...there is now a bigger risk of rising
inflation than of slower growth...".
Both Moskow and Lacker reinforced the notion that there is some sort of trade-off
between economic growth and inflationary pressures. Lacker also dragged out
another piece of well-worn propaganda when he talked about higher prices for
energy potentially causing prices to rise throughout the economy, but unsurprisingly
failed to mention that in the absence of an increase in the total supply of
money a price rise in one area of the economy (the energy sector in this case)
would have to be offset by a price fall somewhere else.
As noted in our 6th November commentary, a Federal Reserve official has an
excuse for spreading misinformation because doing so is a major part of his/her
job description. Unfortunately, however, the vast majority of 'independent'
analysts also toe the official line, proving once again that if a lie is repeated
often enough then most people will come to embrace it as the truth.
Economic growth is the production of more goods and services, so it should
be intuitively obvious that unless the money used within the economy is somehow
being devalued then economic growth will generally lead to LOWER, not higher,
prices. Or, putting it another way: it should be intuitively obvious that unless
there is a change in the value of money then economic growth will result in
the same money chasing a greater supply of goods and services, with the result
being DOWNWARD pressure on the general price level. In determining the true
reasons behind an economy-wide rise in prices the overriding focus must therefore
be on the things that alter the value of money, chief among these being changes
in the money supply and, by extension, the central bank. However, when was
the last time you heard a central banker take responsibility for a drop in
the currency's purchasing power?
The inverse relationship between economic growth and the general price level
can even be seen in the famous "Monetary Exchange Equation". This
equation is of almost no value for a number of reasons*, but it does, at least,
demonstrate the aforementioned relationship. To be specific, the equation can
be expressed as: Real GDP x GDP Price Deflator = Money Supply x Money Velocity;
or GDP Price Deflator = (Money Supply x Money Velocity)/Real GDP. In other
words, the monetary exchange equation shows that for a given monetary situation
a rise in real GDP will be accompanied by a fall in the GDP price deflator
(the GDP price deflator is a measure of how much of the economy's nominal output
growth has been due to higher prices).
Also of note, the theory that there should be an inverse correlation between
the rate of real economic growth and the rate of increase in the general price
level is backed-up by empirical data. Now, we will take good logic over statistics
any day because statistics can be manipulated to show just about anything.
In particular, the statistics produced by governments are routinely manipulated
to paint an inaccurate picture. But having said that, the following charts
show that during the 1970s there was, in fact, a strong inverse relationship
between the year-over-year growth rate in the US CPI (the red line on the top
chart) and the year-over-year growth rate in real GDP (the red line on the
bottom chart). Since 1980 there has not been a consistent correlation -- either
positive or negative -- between the rate of GDP increase and the rate of CPI
increase, but this is probably because the US Government has, over the past
25 years, made major changes to the way the CPI is calculated. These major
changes, which began in 1982 with the removal of house prices from the CPI
calculation, have greatly distorted the CPI's message.
Note that the shaded areas on the following charts identify the periods in
which the US economy was officially in recession.

As outlined above, basic logic and the historical record both suggest that
higher economic growth should be associated with less upward pressure on prices.
So why, then, is the idea that there is some sort of trade-off between economic
growth and worrisome pricing pressures so widely accepted?
One reason is the many decades of propaganda designed to blur the link between
cause (increases in the supply of money) and effect (higher prices). Another
reason is that people have been conditioned to believe the flawed Keynesian
notion that economic growth is driven by consumption.
If real growth were driven by increasing consumption then it might be possible
to make the case that both the money supply and the general price level could
be pushed upward by increasing aggregate demand. However, it should be obvious
that in order for someone to consume more they must first either produce more
or dip into their savings (savings being former production that has been stored
in some way). Alternatively, they could choose to borrow the money needed to
satiate their desire to consume more, but in this case the lender of the money
must have first produced in order to facilitate the borrower's desire to increase
his/her consumption.
The point is that an increase in consumption must be preceded by (funded
by) an increase in production in order for SUSTAINABLE economic growth to occur.
That is, sustainable (real) economic growth is driven by increasing production.
There is, however, a way for consumption to precede production: via the creation
of money 'out of thin air' by the banking system. Monetary stimulation of this
type can create the illusion of buoyancy in the present (it can create an artificial
boom), but it cannot bring about sustainable economic growth. It is, in effect,
an attempt to get something for nothing that does long-term damage to the economy
by distorting price signals.
*The main problem with the Monetary Exchange Equation
is that the relationship between prices, money supply and real economic growth
is determined by the daily decisions/choices of millions of people who each
have their own motivations for doing what they do. This relationship is therefore
way too complex and dynamic to be modeled by any mathematical equation, let
alone a simple one-line equation. Another problem is the impossibility of
determining a meaningful number that represents the average price level within
the economy. For example, although it would be technically possible to calculate
the average between the price of a new car, the price of a visit to the doctor
and the price of a potato, such an average would be a totally meaningless
number. A third problem is the use, in the equation, of the variable known
as "money velocity". This variable cannot be measured and is really
just a 'fudge factor' used to make both sides of the equation equal.
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