On 12/18/2018 6:34 PM, Jason Resch wrote:
On Tue, Dec 18, 2018 at 7:27 PM Bruce Kellett <[email protected]
<mailto:[email protected]>> wrote:
On Wed, Dec 19, 2018 at 12:19 PM Jason Resch <[email protected]
<mailto:[email protected]>> wrote:
On Tue, Dec 18, 2018 at 6:45 PM Bruce Kellett
<[email protected] <mailto:[email protected]>> wrote:
On Wed, Dec 19, 2018 at 11:27 AM Jason Resch
<[email protected] <mailto:[email protected]>> wrote:
On Tue, Dec 18, 2018 at 6:05 PM Bruce Kellett
<[email protected] <mailto:[email protected]>>
wrote:
On Wed, Dec 19, 2018 at 11:02 AM Jason Resch
<[email protected]
<mailto:[email protected]>> wrote:
On Tue, Dec 18, 2018 at 3:23 PM John Clark
<[email protected]
<mailto:[email protected]>> wrote:
Arithmetical computationsdon't change so
there can't be a correspondence between
them and the evolution of spacetime or
with anything else that can change.
"y = 2x+1" defines the arithmetical relation
of "oddness".
Solutions to this equation yield (compute) for
*y* all possible odd numbers. *y* changes with
respect to increasing values of *x*, just as
John Clark's brain changes with respect to
increasing values of *t*.
How does 'x' change?
With respect to y, and vice versa (like your brain
state and your location in spacetime).
Poor analogy. Change in the physical world is governed by
dynamics, described by equations with a veritable 't',
called time. Time is probably only a local phenomenon, but
I do not see any 'time' variable in arithmetic.
It depends on the equation.
What equation? There are no dynamics in arithmetic.
There are computations.
The analogy with the block universe idea is useless,
because the block universe idea is only a picture, not a
reality. Special relativity merely abolishes any notion of
Newtonian absolute time, it does not prove that all
instants of time are equally and simultaneously existent.
The whole notion of simultaneity is abolished in
relativity. Minkowski's block universe was a response to
this, but not a very good picture in the final analysis,
because it completely fails to capture the local dynamical
aspect of the time variable.
Did you read https://core.ac.uk/download/pdf/11921131.pdf ?
No. Why should I?
Because you believe relativity cannot be used to justify the block
universe concept.
You still won't believe it after reading the paper. It's full of
falacious reasoning drawing conclusions about simultaneous events at
different places instead of noting that simultaneity is meaningless for
spatially separated events.
Brent
What is your interpretation of the
https://en.wikipedia.org/wiki/Rietdijk%E2%80%93Putnam_argument ?
The "present" is a local concept which cannot be extended to
global hyperplanes.
Which would means there is no such thing as a present point in time.
I don't know what you mean by "in time". Every event can be labeled by
four coordinate values one of which is "time", but the coordinate label
is not the same as the clock reading of an observer at that event, and
which defines that "present" for that observer.
Remember, the only sensible definition of "time" is an operational
definition -- "time is what is measured on a clock". This is a
purely local concept.
So then you have reduced the present to a point in spacetime, a single
event.
Nonsense. An observer can read his clock at every event along his world
line.
Do you agree in principal, that human experience of a
dynamically evolving universe cannot be used to decide between
block time and presentism?
Special relativity certainly cannot be used to justify the block
universe concept.
That wasn't my question. Do you believe your experience rules out the
block universe?
If you mean a pre-determined universe, I think that is ruled out by
quantum randomness. But I don't think our experience rules out there
being a 4-dimensional map of all events.
Brent
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