standing_alone: thanks for being contrite about possibly offending me. No worries, and I appreciate your taking the time to explain further about why you thought I was wrong.
It seems to me though that the only thing I said that could be disputed is about using the word "prove".
I'd like to review to clarify and also to admit where I might have been wrong:
1) I did not say that I agreed with the Doppler effect in regards to the expanding universe. If you re-read my statement in post #22, you should see that I was opposed to that idea.
2) My actual proposal was that maybe the redshift measurements were due (at least partly) due to the elongation of light from the local gravity and cited the Einstein solar eclipse experiments as supporting evidence. I knew about the Einstein miscalculation, but thought that it was irrelevant to the point that light was "bent" never-the-less.
3) I take your point about a possible alternate explanation to the curved space around the Sun, but I think that electromagnetism idea is unrealistic. I studied physics for several years, and no one has ever demonstrated that gravity could be related to electromagnetism. Even in the attempt to unite the forces in a grand unified theory (GUT), gravity doesn't seem to want to "play along" with the other known forces.
4) I totally take your point that "prove" might be a strong word. Hmmm...can I say this...that he postulated that light coming to us passing by the sun during an eclipse would be moved to a certain extent and it was later confirmed, although maybe not to the same extent that Einstein calculated? I don't see anything not factual about that statement.
Summary: So it seems to me like the only thing in my comment about Einstein proving that gravity bent light that one could take issue with was using the word "prove". The fact that Newton might have postulated it before or that Einstein's figures were off is really secondary to the point that gravity bent light. I'm going to ignore the electromagnetism idea because like I said, the two forces have never been successfully demonstrated to be related and also because E=MC2 equates mass (affected by gravity) to light. Maybe "prove" was too strong a word, but curved space currently seems to be the most plausible explanation for the Einstein solar eclipse experiments.