WHAT'S THE MAIN DIFFERENCE BETTWEN THW WAY EINSTEIN DID GR
AND THE MODERN WAY?
I THINK I CAN ANSWER THIS QUSTEI0N:
THE MAIN DIFFERENCES BETTWEN EINSTEIN-GR AND MODERN GR
IS THAT EINSTEIN RELAIED ON THE POSTULATE THAT
ALL COORDINATS ARE EQUAL, WHILE MODERN GR
USE TENSORS AND BELIVE THAT EVERYTHING THAT CAN BEE CONCLUDED
FROM EINSTEINS POSTULATE IS INHERENT IN TENSORS.
THERE'S NO REASON A PRIORI TO BELIVE THIS
EINSTEINS POSTULATE ARE MUCH MORE!
FROM EINSTEINS POSTULATE AND GEDANKE EXPERIMENT:
R_{ab} - (1/2)R g_{ab}.= 8 pi k/c^2 T_{ab}
CAN BEE DERIVED MODULO THE COSMOLOGICAL CONSTANT
MODERN RELATIVITY JUST BANG UP SOME TENSORS AND
THEN: BANG!-> G=T
.
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