"scerir@libero.it" wrote:
>
> Quantum Money (1)
> Whenever money is earning interest in a bank it is no longer perfectly
> liquid. The only time money is ever perfectly liquid is when it is being
> spent. This is the quantum approach. The quantum definition of money
> basically says that money only appears infinitesimally at the moment of
> payment, and therefore, there really is no such thing as the quantity of
> money.
I find this to be rather erroneous. For example, there has to be some
mass of money to attain a certain probability of spending x amount of
money, based upon economic conditions. Measurements of the quantity of
money account for not only this mass of money, but the economic
conditions that influence the probability of x amount being spent at any
one time.
The incidence by which money is spent is not the quantity of money, but
the velocity of money. The relationship between the two is a matter of
integration.
>
> Quantum Money (2)
> To encrypt, send a photon to the remote site, entangled with one at home. If
> your enemy detects the entangled photon, it canšt be sent again, entangled,
> because of quantum principles. Then send the message photon, and read it by
> teleportantion with the entangled photon. Similarly, you can make quantum
> money that cannot be counterfeited. This was invented by a Columbia student,
> Stephen Wiesner many years ago, and received more notice recently with the
> rise of quantum communications and computing.
Yes, the new methods of quantum encryption do promise to end the control
of BB over once and for all, however, they are not so necessary, yet.
For example, PGP has as a standard feature a randomization function,
such that an 'enemy' listening in cannot determine if what he is
'hearing' is data or merely static. Knowing that what you are seeing is
in fact data is the first step in penetrating any encryption
methodology, and putting the burden on the eavesdropper to consider all
static as 'data' increase his cost of doing business and delays his
ability to act on any information he may derive from it. If the statute
of limitations is 7 years, and you can encrypt enough to keep the
government supercomputers humming for at least that long, then you are
home free. That is the measure of practical optimal encryption. Current
elliptical encryption methodologies seem to indicate that they can
attain practical 'perfect' encryption (i.e. it would take longer than
the life of the universe to crack). In the middle, the longest
marketable strength of encryption is that which is uncrackable for the
entire life of the participants. Even assuming medical immortality, that
still imposes an average 4400 year life span due to irretreivable
accidents. Take the life expectancy of the 99th percentile of a
medically immortal population and you have your absolute largest
marketable strength needed.
>
> Quantum Money (3)
> Was invented, long time ago, by a famous neapolitan comedy writer, Eduardo
> De Filippo (see: Il Sindaco di Rione Sanitā). It is a sort of virtual
> superposition of debts and credits. In his famous comedy no one gets real
> money
'What is 'real money'?' is a better question. Define it. Essentially,
anything that acts like money is money, there is no such thing as
'unreal money', because money in and of itself is merely a symbol.
Anything that is functionally the same as that symbol is, in fact, that
symbol.
This archive was generated by hypermail 2b29 : Thu Jul 27 2000 - 14:14:25 MDT