the logic of SV is based on the premise that V2 is heresy, and that all the popes who promulgated it are therefore heretics. A true council has the authority of God, but God would never permit heresy to issue from such a council. Therefore, V2 did not have the authority of God. It was not a true council. Popes cannot be pertinacious heretics because they cease to be catholics when they are. So if the man in Rome is a pertinacious heretic, he is not a catholic, and therefore, he is not the pope. The entire NO is heretical from top to bottom. It is not the roman catholic church but an organized group of people occupy buildings that were once occupied by catholics.