LIGO Fakers and the Speed of Gravity

Claudia de Rham: "...gravity travels at different speeds across the cosmos." https://www.newscientist.com/article...hapes-reality/

Oh lÃ* lÃ*! LIGO fakers are in trouble. But they are doomed even without Claudia de Rham's speculations. Einstein's general relativity does not predict that gravitational waves travel at the speed of light - Einstein fabricated the "prediction" by means of a sleight of hand:

Arthur Eddington: "If coordinates are chosen so as to satisfy a certain condition which has no very clear geometrical importance, the speed is that of light; if the coordinates are slightly different the speed is altogether different from that of light. The result stands or falls by the choice of coordinates and, so far as can be judged, the coordinates here used were purposely introduced in order to obtain the simplification which results from representing the propagation as occurring with the speed of light. The argument thus follows a vicious circle." The Mathematical Theory of Relativity, pp. 130-131 https://www.amazon.com/Mathematical-.../dp/0521091659

Arthur Eddington: "The problem of the propagation of disturbances of the gravitational field was investigated by Einstein in 1916, and again in 1918. It has usually been inferred from his discussion that a change in the distribution of matter produces gravitational effects which are propagated with the speed of light; but I think that Einstein really left the question of the speed of propagation rather indefinite. His analysis shows how the co-ordinates must be chosen if it is desired to represent the gravitational potentials as propagated with the speed of light; but there is nothing to indicate that the speed of light appears in the problem, except as the result of this arbitrary choice." http://rspa.royalsocietypublishing.o...6/268.full.pdf

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"On 8:41 am EDT August 17, 2017, LIGO detected a new gravitational wave source, dubbed GW170817 to mark its discovery date. Just two seconds later NASA's Fermi satellite detected a weak pulse of gamma rays from the same location of the sky." https://www.cfa.harvard.edu/news/2017-30

"Just two seconds later" and "the same location of the sky" implies that gravitational waves and gamma rays traveled hand in hand: same gravitationally deflected path, same speed, same Shapiro delay, equally blocked by cosmic matter. Unrealistic, isn't it?

The last implication is particularly idiotic. If at some point in space gamma rays are absorbed and don't reach us, the accompanying gravitational waves don't reach us either. Apotheosis of post-truth (post-sanity) science.

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