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Originally Posted by A Thousand Pardons
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Originally Posted by Van Rijn
Einstein was making the point that there was no preferred reference frame. I doubt very much that he was in support of a Ptolemaic geocentric universe: that the earth IS the preferred reference frame, it is the center of a three dimensional universe, that all worlds and stars move about the earth, etc.
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It does say "the sun moves and the earth is at rest". That seems fairly clear.
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Silly, sure, but I believe it is a logical extension of your argument.
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In the same sentence, it also says as another part of the argument about reference frames, "the sun is at rest and the earth moves." Which appears to me to be an argument, in english (not math), for the concept that there is no preferred reference frame. Note that nowhere does it say "the earth is at rest and the sun moves about it" as the geocentrists believe.
However, if you want to discuss GR and reference frames, that's fine, but what you have not made clear is how it is applicable to the geocentric universe discussion.