Since the Sagnac experiment was known in 1914 (even before the development of general relativity), how can Einstein's general relativity be accepted so readily around 1919?

A. - For the same reason that in Galileo's time, when people refused to accept that it was not the Sun (nor the sky) which is moving around the Earth. During Galileo's time, the interpretation of the bible was that EVERYTHING in the sky was moving around the Earth.

However, a contrary observation was already definitely observed using Galileo's first telescope (when observing the satellites of Jupiter moving around Jupiter). It is reported that the monks even refused to look through the Galileo's telescope. Modern physics is dogmatic and possesses many characteristics of a religion.

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I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.