Do you find this argument by this author that SR implies "at least one continuum other than our own spacetime" flawed or reasonable?(adsbygoogle = window.adsbygoogle || []).push({});

According to the special theory of relativity, observers stationary relative to one another will measure the time in the rest frame of an entity moving relative to them i.e. its proper time, to pass more slowly relative to their own i.e. the coordinate time (assuming appropriate synchronization procedures), and the faster the entity moves, the shorter its proper time is observed to be. If the entity moves at the speed of light, its proper time is observed to be exactly zero. But this implies that any entity which moves at the speed of light from the time it comes into existence until it ceases to exist must be observed to perceive itself to have a zero duration of existence in spacetime (since no time passed in its rest frame and presumably it is at rest with respect to itself). This seems very strange, as one might intuitively have thought that a zero duration of existence would be associated with non-existence, but such entities, e.g. photons, clearly exist. This has been previously pointed out by this author and termed theexistence paradox.

http://deepblue.lib.umich.edu/bitstream/2027.42/83153/1/Ontology_and_the_Wave_Function_Collapse.pdf

The author suggests that:

Finally, it may become necessary in certain circumstances to now add the qualifier ‘in spacetime’ when speaking of observers or events in spacetime. For example, the explanation for the speed of light postulate given in this paper suggests that the speed of light postulate itself should now be stated as ’the speed of light has the same value in all inertial frames of referencein spacetimeindependent of the motion of the source or the observer’. That makes its domain of validity explicit, which is important because the domain of validity of the speed of light postulate also defines the domain of validity of theprinciple of locality, which says that nothing travels faster than the speed of light. The principle of locality should now be stated as ‘nothingin spacetimetravels faster than light’. This in turn allows one to approach an understanding of its apparent violations, such as those occurring in Bell’s paradox, by asking in what way they might lie outside its domain of validity.

http://www.fqxi.org/data/essay-cont...f?phpMyAdmin=0c371ccdae9b5ff3071bae814fb4f9e9

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# Special Relativity and the existence paradox

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