Re: Equivalence orinciple (was @ Adalat)
Sorry tfb, I give up. I think we are arguing at cross purposes. It isn’t my job to reconstruct my experiment to fit the theory, by tilting or pivoting the track.
My example is a straight horizontal track. My point is that pushing the rail car by locomotive or by gravity are not equivalent or indistinguishable, if I were inside the car. Einstein’s “thought experiment” might be true in a vertical sense, but I can’t see that it applies in a horizontal dimension.