So you're saying the latency of the same optic cable should decrease, in the south, yes?
Meaning the optic cable would have more speed in the south .... that's right?
Hmm, but you would need very long distances to measure that difference accurately.
Say a cable at least 1000 miles long. One in Europe, the other in Australia, for example.
Or one in Canada, the other in Australia.
And would they have to be on the N-S line paralel to the longitude?
If they are spread out in a line, by latitude, the results are hard to predict.
You need to prove first, that they would be longer, according the FET model, when you spread them in a line, on the N-S or W-E, model.
Keep in mind that the E-W is actually a curved line, according to the Flat Earth Theory. While the N-S is straight.
So how would it have to be, to prove it's faster "down south"? Circular along the E-W lines?
That makes it a lot easier to prove, because it's impossible to spread a cable 1000 km long, directly E-W in Australia.
That would be impossible, because the FET says the East and West aren't straight lines, but curved.
So if there were a perfectly East West, lined cable, longer than 1000 km, in Australia, and it was also proven to be perfectly straight, and without any ammount of curvature, that should be enough to prove RET.
Such a cable does not exist.
It's easy even for those cables to be intentionally curved, to give the illusion of longer distances. Such as the northern hemidisc cables, that can be purposefully "unstraight", to elongate the time distances to match those of the longer southern hemidisc.