On 28 Dec 2013, at 00:57, Edgar L. Owen wrote:
All,
I haven't made any progress getting the idea of a common universal
present moment across so here's another approach with a thought
experiment....
To start consider two observers standing next to each other. Do they
share the same common present moment? Yes, of course. Any
disagreement?
If they are *very* close to each other. Superposed, but not in the
quantum sense, but in the sense of being at the same place.
Now consider those two observers, one in New York, one in San
Francisco. Do they share the same common present moment? In other
words is the one in San Fran doing something (doesn't matter what)
at the exact same time the one in New is doing something? Yes, of
course they do share the same present moment. Any disagreement?
That seems to introduce a notion of simultaneity incompatible with
special relativity. They share the same present *in* some referential,
but not in all.
Bruno
Now consider an observer on earth and an observer in some far away
galaxy. But with the condition that they share the exact same
relativistic frame in the sense that there is zero relative motion
and the gravities of their planets are exactly the same so that
clock time is passing at the exact same rate on both their clocks.
Now are these two observers sharing the exact same present moment as
well? Note that we just extended the exact same relativistic
circumstances of the previous two examples so there can be no
relativistic considerations. Do these two observers also share the
exact same present moment as well? Yes, of course they do. Not only
do they share the exact same present moment but they also share the
exact same clock time t value. Any disagreement?
OK, if you agree then you have to take a partial step towards
accepting my thesis of a common universal present moment. You now
must agree that there is at least a common universal present moment
across the universe for all observers in the same relativistic frame.
Agreed?
Edgar
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