MM experiment actually disproves the absurd notion of constant SOL if interpreted correctly.
If the photons (swimmers/ bullets) motion is unaffected by the mirrors/ interferometer, the two photons will be out of phase when they meet finally and hence should result in interference pattern.
Conversely, lack of interference can be easily explained if we abandon the idiotic notion of constant SOL and by assuming the photons as classical projectiles whose velocity gets affected by that of the source/ mirrors. This holds true whether one believes in ether or not. One doesn’t need ether drag to explain the lack of interference. One just has to remove the ‘relativity spectacles’ and use the classical physics- any projectile’s motion does get affected by that of the source.
Let’s ‘replay’ the experiment using any of the two models used by the relativists
Swimmers (photons) in still water (ether)
Bullets (photons) in vacuum (no ether)
If swimmer’s (photon’s) velocity is not influenced by the west-ward motion of the launch pad (mirror),
Swimmer ‘x’ / Outward leg: As his velocity is 10m/sec and the distance between the moving platforms is 10 meters, swimmer ‘x’ reaches the opposite platform in 1sec. But by that time, the platform would have moved 1meter towards west, so he goes to point ‘D’ instead of going ‘straight’ to point B.
Swimmer ‘x’ / Return leg: Similarly, he swims back the same 10 meters and returns to the first platform in 1sec but again instead of returning ‘straight’, he reaches point ‘E’.
Swimmer ‘x’/ Total journey: He travels 20 meters in 2sec but reaches point ‘E’ instead of the original starting point ‘A’ because of the westward motion of the platform.
Swimmer ‘y’/ Outward leg: As his velocity is 10meters/sec, he reaches point ‘C’ in just 0.9sec. That’s because point ‘C’ on the platform is moving at 1m/sec, he needs to swim only 9meters to reach this point.
Swimmer ‘y’ / Return leg: To meet swimmer ‘x’, he needs to come to point ‘E’. He has to swim back 9meters to come to this point. So he takes again 0.9sec.
Swimmer ‘y’/ Total journey: He reaches point ‘E’ in just 1.8sec by travelling a distance of 18meters. He has to ‘wait’ here to join swimmer ‘x’ who will reach the same point in 2sec by travelling 20meters. Hence this must result in phase difference between the photons and hence must result in loss of coherence between the final beams.
This would not happen if we imagine that the motion of swimmers/ photons get affected by that of the platforms/ mirrors. This straight away debunks the obviously silly theory of relativity.
So the problem is not lack of maths here. One needs a human mind ‘uninfected by the relativity virus’ to interpret the data. That is what is lacking with the relativists whose minds are occupied by the relativity demon and ‘programmed’ by its weird maths. The demon having captured the scientific minds doesn’t allow them to think straight, because that will be suicidal for the demon itself.