Wikipedia defines
"perpetual
motion" as a condition in which an object continues to move
indefinitely
without being driven by an external source of energy. It then
goes on to
explain how this would violate the laws of thermodynamics. But
these laws are
for scientists. Let us look at how to create a perpetual
motion machine using
the techniques of political spin doctors.
There are two key elements
of the
definition - motion and energy. Motion is distance moved over
a set period of
time. Scientists assume that both are constant. But then they
tell us that the
Universe is expanding, which means things are stretching.
There doesn't seem be
an estimate of the rate of stretch but it is small enough that
we don't notice
it from day to day. If things are stretching as they say then
it means the
metre is gradually getting longer. Therefore it is quite okay
to shorten it a
little each year. A 3% reduction per year sounds about right.
In fact this is
only 0.08 mm per day so it won't be noticed by most of us.
This puts it in the
same ballpark as the expansion of the Universe (not
noticeable). Those who need
more precise measurements are clever enough deal with the
metre shortening by
3% per year.
By changing human laws to
redefine the metre
in this way, we can turn a 97% efficient machine into
perpetual motion.
97% might be a little
difficult to achieve
and people might complain if we try more drastic reductions of
the metre so
let's look at the energy side. By way of example let us assume
our machine uses
electricity. Now scientists like to measure electricity in
fancy units like
kilowatt hours but what it boils down to is the dollars you
pay for that
electricity. We could look at the effects of monetary
inflation (by
coincidence, also around 3%) and see if we can extract some
more efficiency
from that. But then we might run into some tax deductibility
problems.
How about if we define
"energy"
as electricity that we have to pay for within, say, four
years? That solves the
problem because we can get a loan. Better still make it a loan
where no
repayments are required for 50 years. Our grandchildren will
have worked out
how to pay off the loan by then.
With a shortening metre
and a long-term
loan for electricity we can easily construct a machine that
meets our improved
definition of perpetual motion. And so we can solve the
world's energy problems
with just a little help from the spin doctors.
What if the shrinking
metre was real?
Length changes at relativistic speeds so why shouldn't it also
change over
time? Maybe the expansion of the Universe is an illusion and
actually
everything within it is shrinking so that things further away
(and therefore in
the more distance past) look like they are moving away from us
at higher and
higher speeds. After all, the Red Shift is due to the changing
wavelength of
light and wavelength depends on speed of "recession" which, in
turn
depends distance and time. A
shrinking metre
would give the same appearance as a higher speed.
The Big Bang becomes the Big Wither!
BTW - there are many, many other consequences
of an expanding universe that make this the more likely
explanation of our observations! :-\
See also Carl Sagan's
Baloney Detection
Kit