The Michelson Morley experiment wasn't a freaking negative result! Einsteinians and flat earthers alike love that particular fallacy.
“Many experimental results never see the light of publication day... it comes down to the data being “negative”, i.e. the expected and/or wanted effect was not observed.”
umm..? all have null results w/ the fringe shift detected <= the resolution of the experimental set up & expected (hypothesized) shift >> than measured.
From page 354 "It was zero in so far as the motion of the earth in its orbit is concerned. The remaining effect, however, was large enough to be measured"
Absolutely not. Flat earthers like to cite the Michelson Morley experement but the detailed results agree with their conclusion. They also don't agree with Einstein.
You shouldn't block flat earthers for the simple fact that it's a fun thought experiment finding every-day observable proofs that the earth is round. Good logic exercise.