Yes, it's not just an illusion or a conspiracy, we are on topic...
...but we haven't gotten answers to my OP.
Nor have we any explanation for the inertial guided trip around Antarctica/Ice Wall experiment. It posits that if you go South, turn right at the wall and go all the way 'round to your starting point, and your gyros tell you that you when clockwise(right), then you went around the inside of an ice wall. It's a way of testing FET. If your gyros say that you went counter-clockwise, then you went around the outside of an island. In addition, the distance of the journey should be 78k miles for FER and only around 11k for REF.