  To E4:  Yes, GR  is only a theory of gravity.  When I was an undergrad in  Physics it was just simply casually mentioned to us right in the classroom that GR  is only a theory of gravity. - It puts things into perspective.  - Stephan Hawking even states it in at least two of his popular books, that GR is only a theory of gravity, I emailed you the pages. - Fock and Keswani state it formally.   Stephan Hawking, V. Fock, and H.G. Keswani all published this for a reason, it puts everything into proper perspective.  It is extremely important that it be on the Poincare page here, to put Poincare into his rightful proper historical perspective.  Please remove that ridiculous red tag, nothing justifies it.  