The FE books out there (including the one written by Dubay) are devoted to BASIC arguments about the FE theory.
They do not present any of the advanced topics at all.
None other has made the link between the chronology of history (which must be must shorter on a flat earth, given the solar precession phenomenon) and FET.
Dubay (and everyone else) has to use my explanations for the solar eclipse, how a nuclear plant functions, the ring laser gyroscopes, the beam neutrinos, the Venus angular size, the axial precession, and much more.