According to FET, circumnavigation is simply traveling in a circular shape around the disk, correct? But if this were true, if I took off eastward in a plane from Anchorage, Alaska and landed westward back in anchorage, it would be a MUCH shorter distance than if I took eastward off from say, Sydney, Australia and landed westward in Sydney. However, in RET these distances are almost the same.
(Please don't respond with something along the lines of "HAVE U EVR FLON FRM SIDNEE AROWND DA WURLDS? PROOV IT!")