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There is a major error in this article in the third paragraph. The fact that calculations are done from the perspective that the Earth is not moving around the Sun does not mean that physicists are applying a geocentric theory. It merely means that, when convenient, they can perform calculations from the point of view of a static Earth. By the same token, you can perform calculations based on the world as seen from a moving train, and assume that the train is not moving. That does not mean you have a theory that the train is not moving (a train-centric theory?). NitramNos 12:15, 7 June 2007 (EDT)
 
There is a major error in this article in the third paragraph. The fact that calculations are done from the perspective that the Earth is not moving around the Sun does not mean that physicists are applying a geocentric theory. It merely means that, when convenient, they can perform calculations from the point of view of a static Earth. By the same token, you can perform calculations based on the world as seen from a moving train, and assume that the train is not moving. That does not mean you have a theory that the train is not moving (a train-centric theory?). NitramNos 12:15, 7 June 2007 (EDT)
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:I agree.  Maybe the proper thing to say is that modern theories suggest that there is no "center" to the universe per se.  At the same time, modern physical models and mathematical tools allow us to call any point the center for purposes of convenience.  That was the real problem with geocentrism:  It took the observed motions of the planets and forced them into a messy spheres-within-spheres model which not only was complicated but also shed no light on the real (Kepplerian) physical principles involved. [[User:Ga ohoyt|Ga ohoyt]] 12:39, 7 June 2007 (EDT)
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