Doubt is the dogmatic position of Lad, who says it was also +ABL's, or almost +ABL's .
Stubborn, you of all people should know that there is a difference between a theological discussion (i.e. theory) and a belief (i.e. way of life). +ABL most certainly entertained sedeism (in many forms), as a theological idea. So did +Bellarmine, Cajetan, and all the other theologians who studied this question.
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Ladislaus is no different from 99% of the people on this forum...he has an opinion/theory. But it's not a BELIEF/fact.
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You are right, sedeism is all about dividing the faithful and always has been, that is the only reason for it as it serves absolutely no other purpose.
No, that's not true. Sedeism as a THEORY, has been around in the Church for centuries. It's not new.
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What is divisive, what satan has used against the Trad movement, is applying a theory as a BELIEF/fact. Satan has tricked a large # of Trads into 2 errors: 1) That any of the theories on the papal question can be figured out 100%. 2) That this or that opinion is important enough to draw lines in the sand and to stop associating with your fellow Trads.
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The theory is not the problem, for it can teach catholics on the limits of papal authority and show that God will not leave us destitute in this time of crisis, but that many saints in the past have experienced similar problems and yet, the Church survived. The problem is one of action - taking extreme measures on one theory or another.