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From: The Starmaker <starmaker@ix.netcom.com>
Newsgroups: sci.physics.relativity
Subject: Re: Since When Is Physics Untestable?
Date: Tue, 16 Aug 2016 10:23:03 -0700
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Pentcho Valev wrote:
> 
> https://www.quora.com/What-are-the-postulates-of-General-Relativity
>  What are the postulates of General Relativity? Alexander Poltorak, Adjunct Professor of 
>Physics at the CCNY: "In 2005 I started writing a paper, “The Four Cornerstones of 
>General Relativity on which it doesn’t Rest.” Unfortunately, I never had a chance to finish it. 
>The idea behind that unfinished article was this: there are four principles that are often 
>described as “postulates” of General Relativity:
> 
> 1. Principle of general relativity
> 
> 2. Principle of general covariance
> 
> 3. Equivalence principle
> 
> 4. Mach principle
> 
> The truth is, however, that General Relativity is not really based on any of 
>these “postulates” although, without a doubt, they played important heuristic roles in the development of the theory."
> 
> Pentcho Valev


The postulate of General Relativity is Newton's law of universal
gravitation.



That's it, there's nothing more...Einstein dropped out of Harvard after
that to design bombs.