[RightWhale]

Yes, depending on geometry they can be distinguished. That, of course has little to do with the STR or the GTR; it's just Newtonian physics. Since Einstein's gravity field was uniformly flat in the elevator example, in that case they could not be distinguished.

[MonroeDNA]

Under what circumstance can a gravity field be "flat?"

[MonroeDNA]

Not trying to be arguementative, if I come across that way.

I guess my point is that accelleration is always 2-D, while gravity is 3-D. They can ALWAYS be distinguished from each other. They are not the same, and under ANY circuimstance imagined, they can be easily distinguished.