Monetary Theory
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9
the running of the planet. In order to improve the geocentric theory, Ptolemy
(90–160) refined the model. To explain the phenomenon of retrogradation
of some planets (which means at some point in time
the orbits of planets seen
from the earth may run in the opposite direction), he proposed the theory
of epicycles, that is, the planets are assumed to move in a small circle called
an epicycle, which in turn moves along a larger circle called a deferent. As
astronomical observations became more accurate, the system developed from
the geocentric theory failed to fit actual observations. Astronomers therefore
included additional epicycles to the existing system one after another, and at
a later stage, astronomers had no idea of the number of epicycles each planet
should have. In half a century
after the publication of the De Revolutionibus
Orbium Coelestium , the heliocentric theory had received little attention with
few supporters and was ignored and misinterpreted even after Galileo had
discovered new astronomical phenomenon in support of the heliocentric
theory. It took many years before the geocentric theory was replaced by the
heliocentric theory. I believe that the interpretation of the geocentric theory
on the orbits of planets without boundary through the application of numer-
ous epicycles more closely resembles the heliocentric theory, but is it mean-
ingful to do so? The heliocentric theory could succinctly explain the orbits
of planets with much higher forecasting precision
than the geocentric theory,
and the pivotal issue is that the earth is indeed moving around the sun, not
vice versa. Although there may only be a fine line between truth and fallacy
in terms of results, they are different in essence.
Similar to epicycles in the geocentric theory, conventional money the-
ory applies so-called multiple deposit creation theoryto explain the creation
of money, but eventually no one can tell the number of times the money
derived, and even the integration method is used for calculation. A question
I read at the graduate school entrance test of the People’s Bank of China
18 years ago was that “a bank increases the original deposit by RMB10,000,
if the required reserve ratio is 20 percent and the cash outflow rate is 10 per-
cent, what is the maximum amount of deposit currency created by the bank-
ing system in total?” My first reaction was to write down the long formula of
circulation and derivation in accordance
with the textbook standard, which
undoubtedly would guarantee a full mark; after a while I felt that integra-
tion was much simpler and changed to the integration formula, which was
logically consistent with the formula of circulation and derivation, which I
thought could earn me some marks. At the last moment before handing in
the test paper, it suddenly occurred to me that it was not necessary to use
such a complicated formula; the same result could
be derived only by chang-
ing all the reserves held by the bank to required reserves and withdrawing
the reserves, which can be completed by a single bank on its own instantly.
10
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Reforms in China’s Monetary Policy
In other words, the volume of bank loans was not restrained by the quantity
of reserves held, and the ultimate deposit in the banking system was the
ultimate deposit of the bank, which can be done only by dividing its reserves
by the sum of the required reserve rate and the withdrawal rate. After some
hesitation, I changed to a simple equation R/(r+c). It was this question that
triggered my complete suspicion over the conventional
money and banking
theory and prompted me to go on a journey that seeks to rebuild the theoreti-
cal foundation of money and banking theory in my mind. In this process,
I have acquired sufficient confidence toward the new money and banking
theory, whereby money creation and banking operation can be expressed in
a succinct way and put into practice, the key is loans create deposit, not vice
versa.
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