Hi Krim
EM! anyone ever suggested JFK is still alive,
not that uncertain is it! You'be been over
doing the science fiction movies again.
DM
[Krimel]
I would add that probability also diminishes as one moves backwards into
the "past". Our memories and recordings of the past give us the illusion
of fixity. But they are replications of settled probabilities. If one
were
actually able to move backwards in time, one would confront to same
quantum uncertainties and problems of entropy (in reverse) that we
encounter moving forward it time.
It is the illusion of memory that makes the past seem fixed and confuses
folks like Ham who see space/time as static.
David M
I suspect we live in a reality where the wave function
does collapse with or without observation, which is why
we find the past is fixed and cannot be reoccupied by us.
That's my experience at least. So this email is now fixed
for ever. Feel free to prove me wrong.
[Krimel]
Your memory and recordings of the past create the illusion of fixity.
These
e-mails are just such records. Your memories are just such records. Time
is
not reversible because of entropy and quantum indeterminacy. This is what
separates those theories from classical physics in which the laws of
physics
work perfectly well in either temporal direction. Thermodynamics and QM
tell
us why time can't run backward but if it did it would be subject to the
same
indeterminacies as it does running forward. Furthermore if we could move
to
some point in "a" past we could not get back to the present we started in.
Also consider that even if we could return to a specific past, if would
not
be the past we originally started from because we would be in it. Our
presence would alter the probability structure.
Our memories and recordings, like these e-mails, create the illusion of
fixity in the past, but we can see through this illusion even in a mundane
way without reference to physics. My favorite example is the Kennedy
assassination. Several publicly funded and a host of private crack pots
have
attempted to reconstruct this event using photos, home movies, sound
recordings and eye witness testimony. After 40 years of tireless effort
the
results are still inconclusive. Even our illusion of fixity can not tell
us
what "actually" happened. I would say this is true of all historical
events
and the farther back you look the less certainty you will find. In this
sense the past is for us just as much a model of what was, as the future
is
a model of what will be.
In some sense we 'can' travel in time and I suspect that this fifth
dimensional aspect of our being is what produces consciousness. It is the
ability to remember the past and to project into the future that really
makes us, if not unique then 'special'. We can take various points of view
not only of social relationships and spatial relationships but of temporal
relationships. We are constantly interacting with these multifaceted
perspectives; processing them in parallel and constructing serial
narratives
out of them.
There is in nature the manifestation of recursion and iteration. The
values
of the probabilities that collapse in the present are fed into the
equations
that become the future. This process continues moment to moment eon to
eon.
It exhibits the property of self similarity across scale. Pick a time
scale
from nanoseconds to millennia and you can zoom in zoom out, refocus.
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