May be we had out from our first topic of this discussion so I think that we should back to our topic about Einstein and his Gravitational theory. PMB you want me to find the evidence about Einstein theory of space time curvature I will show you

my evidence

first

http://en.wikisource.org/wiki/Translation:The_Field_Equations_of_Gravitation [nofollow] the field equation of gravitatinal of General Relativity in 1915 Einstein wrote that "I have shown in two recently published reports,[1] how one can arrive at field equations of gravitation, that are in agreement with the postulate of general relativity, i.e. which in their general form are covariant in respect to arbitrary substitutions of

**space-time variables**".

We obtain the ten general covariant equations of the gravitational field in spaces, in which "matter" is absent, by putting

G_{im}=0 (2)

These equations can be formed in a simpler way, when one choses the reference system so that \sqrt{-g}=1. Then S_{im} vanishes due to (1b), so that one obtains instead of (2)

R_{im}=\sum\limits _{l}\frac{\partial\Gamma_{im}^{l}}{\partial x_{l}}+\sum\limits _{\rho l}\Gamma_{i\rho}^{l}\Gamma_{ml}^{\rho}=0 (3)

\sqrt{-g}=1 (3a)

Here we put

\Gamma_{im}^{l}=-\left\{ {im\atop l}\right\} (4)

which magnitudes we will denote as the "components" of the gravitational field.

If "matter" exists in the considered space, then its energy tensor appears on the right hand side of (2) or (3). We put

G_{im}=-\varkappa\left(T_{im}-\frac{1}{2}g_{im}T\right)

Second in Einstein book

http://en.wikisource.org/wiki/Relativity:_The_Special_and_General_Theory/Part_III#Section_32_-_The_Structure_of_Space_According_to_the_General_Theory_of_Relativity [nofollow] Einstein said that " According to the general theory of relativity, the geometrical properties of space are not independent, but they are determined by matter. Thus we can draw conclusions about the geometrical structure of the universe only if we base our considerations on the state of the matter as being something that is known." That mean the curvature of space can explain by the appear of matter.

In third evidence is about Einstein field equation in The meaning of relativity paper

http://en.wikisource.org/wiki/The_Meaning_of_Relativity/Lecture_4 [nofollow]R_{\mu\nu} - \frac{1}{2}g_{\mu\nu}R = -\kappa T_{\mu\nu}. In the left hand side show the Einstein tensor that have Ricci tensor to explain about the curvature of space and in right side show about mass and energy tensor

All of these were the evidence about matter can cause of the curvature of space time.

If you said that Einstein version of general relativity wasn't relate with space time curvature I think you are wrong but if you said that Einstein version of general relativity wasn't relate with Tidal force.I will agree with you because The tidal force conect with general relativity was the modern view of general relativity not Einstein general relativity. I haven't seen in any paper of Einstein general relativity that he write about tidal force