Is Einstein's Relativity Inexact?

On Jan 7, 7:19*pm, wrote in
sci.physics.relativity:
In sci.physics.relativity Dave wrote:

http://www.sciencedaily.com/releases...0105150837.htm

This is a press release about a proposal for a new test of local
Lorentz invariance. *The actual paper, Phys. Rev. Lett. 102 (2009)
010402, does not claim that "Einstein's relativity [is] inexact";
it says, to paraphrase, "Here's a new set of possible experimental
tests of relativity, which could show whether or not it's exact in a
certain kind of gravitational interaction."

That's what physicists *do*. *Theories in physics are not religions;
there are always new tests possible, and a successful falsification
of a major established theory is a good path toward a Nobel Prize.
This paper points out a new set of tests for a certain form of a
violation of local Lorentz invariance, which might otherwise be
quite hard to see. *The authors aren't arguing for some particular
alternate theory, or claiming that relativity is wrong; they are
saying, Here's something new that we can check.

If anyone wants to see what this paper is really about, the preprint
is available at http://arxiv.org/abs/0810.1459.

Steve Carlip

Honest Carlip how can you be so (intentionally?) confused? Why don't
you take more notice of what your brothers teach:

http://arxiv.org/PS_cache/arxiv/pdf/...705.4507v1.pdf
Joao Magueijo and John W. Moffat: "The question is then: If Lorentz
invariance is broken, what happens to the speed of light? Given that
Lorentz invariance follows from two postulates -- (1) relativity of
observers in inertial frames of reference and (2) constancy of the
speed of light--it is clear that either or both of those principles
must be violated."

Pentcho Valev